13 best electric tankless water heaters

Product description

This Smart Technology electric tankless water heater is configured as a "whole home" model for climates where incoming water temperature is 62°F and above. The ECO 18 is capable of heating over 2.5 gallons per minute, which is the equivalent of one water saver shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 62°F, and an output setting of 105° F. Two showers emitting no more than 1.5 gpm each can be run simultaneously when incoming water temperature is above 70° F. Digital temperature control allows you to set your temperature in increments of 1°. All tankless water heaters are sized based on flow rate and temperature rise, and there is a direct relationship between the two. So if used in a cold area requiring a high temperature rise, it will be more limited in the amount of fixtures (gallons per minute) it can heat at one time compared to a warmer climate. However, when sized properly it will provide endless hot water and only consume the energy needed, giving the user complete control. Prior to purchase and installation please verify this model is the right size for the expected demand and electrical requirements. The ECO 18 requires a minimum 150 amp electrical panel for installation with 40 amp double pole breakers connected to sets of #8 awg wire. Plumbing connections are 3/4" NPT. For additional assistance please feel free to contact our support center at 877-474-6473.

From the Manufacturer

This Smart Technology electric tankless water heater is configured for climates where incoming water temperature is 62 Degree F and above. The ECO 18 is capable of heating over 2.5-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 62 Degree F. Two showers can be run simultaneously when incoming water temperature is above 70 Degree F in warmer climates such as South Texas, South Florida, New Mexico, Arizona and South California. These models come with a digital temperature control that allows you to set your temperature in increments of 1 Degree. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

• The product is highly durable
• The product is easy to use
• Manufactured in China
• Copper and stainless components
• Lifetime warranty for residential use
• Save up to 60% on your water heating costs with the most advanced, self modulating technology available
• Never run out of hot water with an ECOSMART tankless water heater.

User questions & answers

Question:	How do know which size to buy? We will supply two bathrooms, dish washer, clothes washer. What size should I choose
Answer:	I noted someone below stating they got the largest one and they can only run one water source at a time. My guess is they installed it wrong by not getting the electric hooked up right, or maybe the unit was just defective, or they live in Alaska. I went under size with an Eco 27 a few years ago because that’s all my electric panel could handle. We have zero issues in the summer. During winter months we can only run one shower at a time and have to slowly fill a tub (maybe 3/4 fill speed). To save as much money as I am on electric bill and have unlimited shower lengths (only 1 person at a time mid-Dec to mid-March) is totally worth it. On here today because I’m thinking of upping my panel size so was thinking of going with a larger one now. Regardless, CCRC’s experience with the largest unit not working is nothing like the experience I’ve had, and again I intentionally undersized mine for the house. The website has a clear chart to explain size you need based on number of water fixtures in your home and ground water temperature.
Question:	Can this unit supply a 3,700 sq foot home with 3 1/2 baths
Answer:	In the lower states it can, but in the northern states, multiple simultaneous users, it will be overloaded. If you can afford a 3,700 square foot home, then you can place a unit in each appropriate demand zone and be very glad you did. I love mine, live in KY, get great supply when the water is above 60 degrees, and then it slows the flow as the temperature drops. I have dishwasher, washing machine, garden tube, 2 showers, 3 sinks and 4 people. It is better than great in the summer, okay spring and fall, and we are conservative in the winter.
Question:	What is the power consumption of this tank-less heater
Answer:	The instantaneous power consumption while the hot water is running is quite high (up to 18kW or 27kW depending on which model you’re looking at on this page). However, when no hot water is being used, the power consumption is 0 (or a minuscule amount to run an LED light or something). The total power consumption over the course of several days or longer should be much lower than a tank heater but the short term power usage while the heater is making hot water will be much higher than a tank heater. It’s just that the unit sits idle most of the time while a tank heater will use power fairly frequently even when no hot water is needed as the water in the tank cools off over time and needs to be re-heater fairly constantly
Question:	remote
Answer:	This unit does not have the ability to have a remote temperature control.

Product features

3 Smart Steps for Endless Hot Water

Step 1: Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. A lower inlet water temperature will require a higher kilowatt product.

Step 2: Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature. Tankless electric water heaters are sized for maximum simultaneous use, not maximum fixtures in your home.

Step 3: Determining specifications and electrical infrastructure is important because without the correct infrastructure your unit may not fit into your breaker panel.

Product description

This Smart Technology electric tankless water heater is configured as a "whole home" model for climates where incoming water temperature is 67°F and above. This model is well suited for heating up to 2-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67°F and an output setting of 105°F. Digital Temperature Control allows you to set your temperature in increments of 1 Degree. This model can also be used in colder climates as a Point of Use for a sink or other low flow application. All tankless water heaters are sized based on flow rate and temperature rise, and there is a direct relationship between the two. So if used in a cold area requiring a high temperature rise, it will be more limited in the amount of fixtures (gallons per minute) it can heat at one time compared to a warmer climate. When sized properly this water heater will provide endless hot water and only consume the energy needed, giving the user complete control. Prior to purchase and installation please verify this model is the right size for the expected demand and electrical requirements. The ECO 11 requires a minimum 125 amp electrical panel for installation with 60 amp double pole breaker connected to set of #6 awg wire. Plumbing connections are 1/2" compression fitting with the option of 1/2" NPT adapter included. For additional assistance please feel free to contact our support center at 877-474-6473.



NOTE : 11Kw at 220 is equal to 13kw at 240. .Activation Flow : 0.3 GPM

From the Manufacturer

This Smart Technology electric tankless water heater is configured for climates where incoming water temperature is 67 Degree F and above. This model is well suited for heating up to 2-Gallon per minute, which is the equivalent of one shower head (with a 1.5 gpm flow) and one sink with a low inlet water temperature of 67 Degree F. Digital Temperature Control allows you to set your temperature in increments of 1 Degree. This model can also be used in colder climates as a Point of Use for a sink or other low flow application. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

• Lifetime warranty
• Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
• Never run out of hot water with an ECOSMART tankless water heater
• Patented Self Modulating Technology and design
• ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98

User questions & answers

Question:	Ours has only been in service for less than a year - will not adjust temperature to anything above 85 Deg. F. What do you think is the problem ? kds
Answer:	My only guess is that the rheostat (variable resistor) that the temperature adjustment knob is attached to may be faulty. If that isn't it then I don't know. Sorry.
Question:	The warrenty says that this unit must be installed by a licensed electrician and plumber, for them to honor the "life time warrenty." why
Answer:	Hello Bob, The reason is the same as why an innumerable number of gadgets around the world have that little "warranty void if removed" label. Because getting inside of one requires a certain level of training and expertise. Same with this unit. GadgetsGo is an authorized Ecosmart dealer. Kind regards,HenryGadgetsGo
Question:	My house is wired 110V. What additional items do I need to purchase for the conversion
Answer:	Just to expand slightly on prior answers, normally a residential service feed is 240 volts between the two incoming hot legs. There is also a neutral leg, which (hopefully) has zero potential with reference to ground. The voltage between either one of the hot legs and the neutral leg is 120 volts. The 120 volt circuits in your house are connected to one or the other of the two hot legs, and only one. An attempt is made to assign circuits to the two hot legs in a way that will roughly balance the load between them. The other side of a 120 volt circuit is connected to the neutral leg. There is additionally a safety ground run with the circuit, which also ties into the panel. Certain devices require more power (work product of current and voltage) than is practical to deliver using a 120 volt circuit. Common examples are your clothes dryer, and your electric stove. These devices are powered by both hot legs, with a difference in potential of 240 volts. This water heater is also such a device.STRONG BUT FRIENDLY WARNING: If you did not already know this, please don't make wiring this water heater your learning opportunity with electricity. Hire someone who knows how to do it right. Cutting corners, especially with higher currents and voltages, can lead to equipment damage, fire, and electrocution. Electricity is not magic, and you can certainly learn how to do many common wiring tasks safely on your own, but today is not the day to begin that journey. You need properly sized components, properly installed, and connected to an adequate service. Also, if you really, really foul up, you could conceivably wind up making that morning shower more energizing than you ever imagined, if you get what I mean. So newly aspiring electricians should go fix their grandmother's favorite table lamp instead. Once they have that working they can use it to to start reading books about electricity, residential wiring, and eventually, books about this stuff: http://amazon.com/s/ref=nb_sb_ss_c_0_8?url=search-alias%3Dstripbooks&field-keywords=nec+code&sprefix=nec+code%2Caps%2C164 . Of course, you still have to know not to nick conductors when you strip them, and other trade craft like that ; ) . Like almost everything in life that is fun, electricity will hurt you. Sort of like all those people you dated for a while, and then wished later you had never met.
Question:	what amp breaker is required
Answer:	The National Electrical Code requires conductors and overcurrent protection to be sized at 100% of the manufacturer's branch circuit recommendation for tankless electric water heaters. A 60 amp breaker is the same price as a 40 or 50, it is the wire that costs more. #6 AWG wire is required for a 60 amp circuit. If you undersize the wire it could overheat and catch fire. Protect your family and follow the manufacturer's sizing for this, or any other, electrical device. Your family's lives are worth the extra money. 

Product features

3 Smart Steps for Endless Hot Water

Step 1: Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. A lower inlet water temperature will require a higher kilowatt product.

Step 2: Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature. Tankless electric water heaters are sized for maximum simultaneous use, not maximum fixtures in your home.

Step 3: Determining specifications and electrical infrastructure is important because without the correct infrastructure your unit may not fit into your breaker panel.

Product description

This water heater offers quick, continuous hot water that is on demand for single point-of-use or multiple applications.Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement. Digital temperature control allows you to set your temperature in increments of 1°

• External digital thermostatic control with LED display (+/1 degree accuracy)
• Most advanced self-modulation, adjust power to meet hot water demand
• Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
• Simple installation – bottom 3/4 inch NPT water connections
• Threaded for easy replacement, simple installation, digital temperature display

User questions & answers

Question:	Can this be used in a recirculating system
Answer:	No where on the box does it say contains copper. Box reads.... 100% nonstick surface - hand washable and dishwasher safe- PFOAF Free, PTFE- fiberglass coating, safe up to 500 degrees, FDA approved. We are happy with our purchase.
Question:	How many amps
Answer:	Of course it can.
Question:	how many breakers and what amp
Answer:	No
Question:	will this supply two showers, washer and dishwasher for two people? (1000 sf house
Answer:	Made in China

Product description

V65iN is the perfect combination of high efficiency, comfort and value in a natural gas tankless water heater from Rinnai. Ideal for small to medium homes or remodels, compact, easy-to-install, reliable and perfect for indoor locations; Rinnai products provide peace of mind with warranties that surpass the competition.

From the Manufacturer

Features ENERGY STAR Qualified Energy Factor of .82 for Natural Gas and Propane Certified for Installation in Manufactured (Mobile) Homes Leak detection shuts off water to unit to limit property damage Enhanced scale detection lessens possibility of serious, long-term damage to unit Temperature lock prevents accidental or unauthorized changes to water temperature Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels Rinnai Value Series Tankless Water Heater Product Warranty Dimensions Width: 14 Inches Height: 23 Inches Depth: 9 Inches Weight 45.6 Pounds Ignition Direct Electronic Hot Water Capacity 0.26 to 6.6 GPM Minimum Activation Rate 0.4 GPM Minimum/Maximum Gas Rate (Input BTUs ) 10,300 150,000 Energy Factor 0.82 for Natural Gas and Propane Energy Star Yes Approved Gas Types Natural Gas or Propane Temperature Settings 98F - 140F with MC-91-2US 98F - 160F with MCC-91-2US Type of Controller MC-91-2US (included) MCC-91-2US (optional for Hydronic Applications) MC-100V-1US Deluxe Controller (optional) BC-100V-1US Bathroom Controller (optional) Ultra Lox NOx Yes Electrical AC 120 Volts, 60 Hz Electrical Consumption Normal: 76 Watts Standby: 2 Watts Anti-Frost Protection: 120 Watts Service Connections Gas Supply: 3/4 Inch MNPT Cold Water Inlet: 3/4 Inch MNPT Hot Water Outlet: 3/4 Inch MNPT

• Endless hot water for your entire home
• V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
• Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
• Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
• Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

User questions & answers

Question:	which models are "condensing" units, please
Answer:	I don’t know. But I suggest u look for a different brand. It already failed twice in less than a year and their warranty is a scam. They provide the parts which are pennies and leave out labor.
Question:	How does it effect the water pressure, will it change
Answer:	It does not effect my water pressure at all. I’ve had it for over a year now
Question:	My existing water heater is located next to and shares a flue with the furnace. Can I hook the same way on this
Answer:	Hold up there, previous answer, not so fast. It is true that you should not have both the hot water heater and furnace venting directly into the flue, combining the exhaust. However, some people see their vent pipes entering the flue (or chimney wall) and assume they are both releasing the fumes inside the chimney. In some cases, the venting pipes continue separately up the flue. Joseph, if you have two vent pipes entering your flue, there is a chance that both pipes continue separately up the flue and out the top. If that is the case, you may be able to use the existing hot water vent system. When you look at the top of your chimney, do you see two terminations coming out?
Question:	How does very cold intake water affect performance
Answer:	Sorry to contradict but the temperature of the water going into the water heater will definitely have an effect on the temperature of the water coming out. the water heater needs to provide enough BTUs to heat the volume of water that you need to the water temperature that you want. If the water starts off at a lower temperature it will take more BTUs to get it to the temperature you want. This unit claims to be able to provide 6.6 gallons of hot water per minute but that assumes the water is startling an average temperature. If you have a modern shower head it will only use about 2.5 GPM but if you have second shower going, a hot water faucet open or a clothes washer filling at the same time you will run out of capacity quickly. Rinnai should have tables on their website that shows the ability of the unit to heat water at a variety of starting temperatures to a range of hot water temperatures at a given flow rate.

Product features

Endless Hot Water

Put an end to scheduling your hot water need.

• Never again choose between taking a piping hot shower, doing a load of laundry or running the dishwasher. A Rinnai Tankless Water Heater will never run out of hot water and leave you in the cold.

Hot Water On-Demand

Don't waste while you wait.

• Rinnai tankless water heaters with ThermaCirc360 technology recirculates hot water through your pipes to get you hot water fast.
• While you wait for hot water to travel from your old tank to your shower, you can waste the equivalent of twenty-four 16-ounce bottles of water every time. ─ that means an average of 8,700 bottles of water per person, per year.

Save Valuable Space

Your hot water heater doesn't have to be a behemoth!

• Compact design allows for installation in non-traditional spaces such as the attic, crawl space or even a closet.
• Save 16 sq. foot of space ─ the Rinnai tankless water heater is only the size of a small suitcase.

Affordable, Efficient Savings

Efficiency packaged in a compact design means cut CO2 emissions (as compared to tanks), use less energy and conserve water.

• Use 40% less energy than traditional tanks* because you heat water only when you need it.

100 years of Confidence

Get peace of mind with the unsurpassed quality and innovation of a Rinnai tankless water heater.

• Trust the #1 selling gas tankless water heating brand in North America for all of your water heating needs.
• Smart technological advancements such as WiFi monitoring, your trusted Rinnai service provider can monitor the efficiency of your tankless water heater and address issues before you ever experience a break in service.

Sustainable Reliability

It's a smart investment for now and the future when you intertwine sustainability and reliability.

• Every part of a Rinnai Tankless water heater is replicable so components can be easily swapped vs. buying a whole new system.
• Average life expectancy is 20 years vs. 8-10 for a traditional tank**
• With this premium product, you'll save–both money and worry–in the long run.

Product description

"The Stiebel Eltron Tempra 24 Plus Tankless Water Heater features exclusive Advanced Flow Control German patented technology invented by Stiebel Eltron to automatically maintain water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity to ensure that hot showers will never be interrupted. Tempra 24 Plus will typically use 15-20% less energy compared to conventional electric tank water heaters. Although, it’s possible to save significantly more energy depending on personal home usage habits. The difference is that conventional tank water heaters continually store hot water, and as a result, lose 15%-20% of the total energy consumed to the environment around them. This is called standby heat loss. Tank water heaters that use gas or oil are even less efficient, because they also lose heat through their vents to the outdoors. Our tankless water heaters do not need venting, and will not store hot water, waiting for you to use it. They operate on-demand to provide continuous and endless hot water when you need it, and not waste energy when you don’t. CERTIFICATIONS INCLUDE - ANSI/UL Std. 499, CSA Std. C22.2 No. 88, ISO 9001, WQA tested & certified against NSF/ANSI 372 for lead free compliance. TECHNICAL SPECIFICATIONS – Single Phase 50/60 Hz; Voltage: 240 V/208 V; Wattage: 24 KW/18 KW; Min. recommended household electric service 150 A; Amperage draw: 2 x 50 A 2 x 44 A; Number and min. recommended size of circuit breakers: 2 x 50 A (DP); Number of runs and min. recommended wire size (copper): 2 x 6/2 AWG; Max. temperature rises: 92 F/82 F at 1.50 GPM, 73 F/54 F at 2.25 GPM, 54 F/41 F at 3.00 GPM, 37 F/27 F at 4.50 GPM; Min. water flow to activate unit: 0.50 GPM/1.9l/min; Weight: 16.1 lb/7.3 kg; Nominal water volume: 0.26 gal/1l; Max. inlet water temperature: 131 F/55 C; Working pressure: 150 PSI/10 BAR; Tested to pressure: 300 PSI / 20 BAR; Water connections: 3/4"" NPT."

• CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
• SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
• EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
• TEMPRA 24 PLUS – This specific model is 24kW, 240V, requires a min recommended electric service of 150 A, and offers an output water temperature of 68° to 140°F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
• WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase

User questions & answers

Question:	How can i make tempra trend 24 work with my bosch shx33a05uc/22 dishwasher? the dishwasher will not advance to next cycle. water is not hot enough
Answer:	This water heater activates at 0.5 GPM and will heat to your set temperature at the correct flow rate for that set temperature. Please call our Technical Department at 1-800-582-8423 Ext 6 with more details so we can help you better. (for example, does the dishwasher have its own heating element, distance between the 2 units, etc...) Thank you.
Question:	Electric panel is ~50 feet from where i want to install the tempra 29 trend. is this distance ok for #8 thhn wire
Answer:	The recommended wire is 8/2 and there is not a limit to distance written in the install directions. You need to check with your electrician. Make sure he is state license and insured. We have installed a Tempra 29 and our electrician ran three 8/2's approx. 30' with no question. But check with your electrician and local codes. God bless you and happy New Year.
Question:	Is there an installation kit available for this? i am installing in a remote location & plumbing parts are not available? water lines are pvc
Answer:	There is no specific installation kit. However, we suggest using flexible braided hose connections that screw onto the hot and cold water for the first 18" or so. These connections are easy to remove to check a filter screen or if needed to work on the unit in general. The connections are 3/4" NPT. Please feel free to call our Technical Support Department at 1-800-582-8423 ext 6 with any questions. Thank You.
Question:	Where is it made
Answer:	We asked the Manufacturer and they replied: "These are made in Holzminden, Germany"

Product features

1 Find your approximate ground water temperature on the map.

2 Check the column on the table to see how many fixtures can be supplied at the same time for each model.

Product description

Eco Smart ECO 36 Electric Tankless Water Heater, 36 KW at 240 Volts with Patented Self Modulating Technology Why Eco Smart? If you have a need for a high amount of hot water then the ECO 36 is the right choice. The ECO 36 is the largest electric tankless water heater available with our patented self-modulating technology. This smart technology tankless water heater is ideal for the northern United States, where incoming water temperatures can reach as low as 37 degrees F. The ECO 36 is capable of heating nearly 3.5 gallons per minute at this low temperature. To put that into perspective, it can handle up to two showers running at the same time and never run out of hot water. For homes in the southern United States, the ECO 36 is perfect for large Roman-style and Jacuzzi tubs or high demand of hot water between multiple applications. It can handle up to 6 gallons per minute, which means you can run four showers and a sink simultaneously and never run out of hot water. A digital temperature control allows you to set your temperature in increments of 1 degree, so you can set the temperature to how you like it. The ECO 36 is the most powerful model from our full line of tankless water heaters, with the capacity to handle a large single-family home.Take a look at our full line of tankless water heaters below to see what's perfect for you. THIS MODEL REQUIRES 150 AMPS DEDICATED!. Required Wire: 4 x 8 AWG

From the Manufacturer

Ecosmart ECO 36 Electric Tankless Water Heater, 36 KW at 240 Volts with Patented Self Modulating Technology Why EcoSmart? If you have a need for a high amount of hot water then the ECO 36 is the right choice. The ECO 36 is the largest electric tankless water heater available with our patented self modulating technology. This smart technology tankless water heater is ideal for the northern United States, where incoming water temperatures can reach as low as 37 degrees F. The ECO 36 is capable of heating nearly 3.5 gallons per minute at this low temperature. To put that into perspective, it can handle up to two showers running at the same time and never run out of hot water. For homes in the southern United States, the ECO 36 is perfect for large Roman-style and Jacuzzi tubs or high demand of hot water between multiple applications. It can handle up to 6 gallons per minute, which means you can run four showers and a sink simultaneously and never run out of hot water. A digital temperature control allows you to set your temperature in increments of 1 degree, so you can set the temperature to how you like it. The ECO 36 is the most powerful model from our full line of tankless water heaters, with the capacity to handle a large single-family home. Take a look at our full line of tankless water heaters below to see whats perfect for you. THIS MODEL REQUIRES 150 AMPS DEDICATED!

• Sleek and compact design with digital output temperature display
• ECOSMART tankless water heaters are 99.8-percent energy efficient
• Manufactured in United States
• Pipe Fittings:3/4 inch NPT
• Required Breaker:4 x 40 A
• 150 A

User questions & answers

Question:	What model is recommended for whole house
Answer:
Question:	I live in lower michigan and what model is recommended for whole house
Answer:
Question:	Why are these so much less expensive than other name brand tankless heaters
Answer:
Question:	Even with 200 amp. My lights flicker with the water is in use. Any one having the same issue and how was the issue resolved? Thanks
Answer:

Product features

3 Smart Steps for Endless Hot Water

Step 1: Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. A lower inlet water temperature will require a higher kilowatt product.

Step 2: Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature. Tankless electric water heaters are sized for maximum simultaneous use, not maximum fixtures in your home.

Step 3: Determining specifications and electrical infrastructure is important because without the correct infrastructure your unit may not fit into your breaker panel.

Product description

This water heater offers quick, continuous hot water that is on demand for single point-of-use or multiple applications.Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement. Digital temperature control allows you to set your temperature in increments of 1°

• ON/OFF Dial Control with adjustable digital temperature display
• Self-modulating power control
• 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
• Bottom 3/4" NPT water connections
• On demand, consistent and continuous hot water

User questions & answers

Question:	Can this directly replace a 40 gal tank heater with a 30A double pole breaker? What are power requrements
Answer:	No it can't. RTEX-24 requires 3 sets of wire and ground, and it needs 3x 40amp breaker. That's a total of 120amps
Question:	Can you use the 10/3 for one of the cicuits
Answer:	No. It requires three legs of 8-2.
Question:	Can the unit operate as a rtex-18 if i only hook up 2 of the elements? because i only need the 18 specs as of now but would like the option to upgrade
Answer:	Actually you can do this but you must be careful on which circuits are connected. Rheem says the elements are activated from right to left as power is required. The right most element connection also provides power to the control so this must always be connected. If the very left element is left disconnected, you will only get 2/3 of the rated power on a 3 element unit.
Question:	Why are 2 answers for the breaker requirements. Is it 3 double 40 or 3 double 60 amp
Answer:	If the unit draws 40 amp. you need a 2 pole 40 amp breaker 2 #8 wires good for 40 amp and 1 # 10 wire for a bond. Now if the unit draws 60 amps you need 2 # 6's good for 65 amps. A 2 pole 60 amp breaker and 1 # 8 for a bond( ground wire).

Product features

Rheem 240V 3 Heating Chambers RTEX-24 Residential Tankless Water Heater

Professional Classic tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications.

Performance Features

• On demand, continuous hot water
• Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F
• 99.8% Energy efficient
• Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
• Simple Installation
• Digital temperature display

Applications

• Standard Hand Sink – 0.5 GPM
• Washing Machine – 1 to 1.5 GPM
• Kitchen Sink – 1 to 2 GPM
• Dishwasher – 1 to 2 GPM
• Water-Saver Shower Head – 1.5 GPM
• Standard Shower Head – 2.0 GPM
• Bath Tub – = 4 GPM
• Whole-Home – up to 6 GPM

Average Gallons Per Minute (GPM) based on 2010 Plumbing Standards.

Unique Features

• External Digital Thermostatic Control with LED display (+/- 1 degree accuracy)
• Most advanced self-modulation, adjust power to meet hot water demand
• Durable Copper Immersion three heating elements, field serviceable
• Simple Installation – Bottom 3/4"NPT water connections

Product description

Specifications

- Plug: US Plug

- Color: Gold

- Waterproof Rate: IPX4

- Rated Voltage: 110V

- Size: Approx. 13.5 x 6 x 16.5cm/ 5.31 x 2.36 x 6.59"

- Rated Power: 3000W

- Frequency: 50Hz

- Rated Pressure: 0MPa

- Water Temperature Range: 30-48℃(86-118°F)

- Heating Material: 304 Stainless Steel

- Start-Up Pressure: 0.4-0.6MPa



Features

3 seconds that is hot, really thermostat without waiting

Safe and intelligent, no water flow stops heating

0.1 second automatic power-off when leakage

It heats water as the water passes thru the unit, instant heating, so you can use the hot water as you like

3000W output tankless electric water heater eliminates long time waiting

Constant temperature maintains the optimal water temperature for you

Easy to install under the bathroom or kitchen sink for washing dishes, food, clothes, faces and other functions.

Suitable for universal water pipe: 1 / 2 inch diameter (inflow or outflow)

Various protections: Leakage protection, IPX4 waterproof, Dry heating protection, Water-electricity isolation, Auto power-off at inactive state, Over-temperature automatic power-off



Package Includes

- 1 x Electric Water Heater

• 【Thermostatic Water Heater】- The high efficient water heater for the application of changing the cold water into hot water between 30 and 48 ℃ (86-118°F) and it will meet your various needs such as used in kitchen, bath room. Freely adjust water temperature by water flow, simple operation.
• 【Premium Material】- This Thermostatic water heater is made of high quality stainless steel, sturdy construction, corrosion resistance, rustproof and long service life. Mini design, it is durable, elegant and smart. Mini body, Easy to install under the bathroom or kitchen sink for washing dishes, food, clothes, faces and other functions.
• 【Safe Protection】- Multiple safety protection measures such as hydroelectric isolation protection, anti-dry protection and enclosure insulation protection. Built-in leakage protection device. Automatically power off without water. Over-temperature automatic power-off, automatic power-off when not working.
• 【LCD Digital Display】- The temperature sensor transmits the temperature in real time, and the LCD display can directly display the water temperature.
• 【100% Customer Guarantee】- Our products are shipped from US warehouses, we will ship your order asap through logistics such as UPS/USPS/FedEx. If you have any problems, please feel free to contact us. We will try our best to solve your problem.

User questions & answers

Question:	What temperature change is achieved at a flow of 2.5 GPM
Answer:	Water temperature of the mini electric water heater is controlled by the size of water flow. Large water flow results in low temperature, small water flow results in high temperature.
Question:	Is this unit any good for washing machines
Answer:	NO
Question:	Will it freeze if mounted in a shed with no heat? Is there an easy way to drain it between uses
Answer:	It will freeze. There is no heat on the in-line water heater when it is not in use. Therefore it is nothing more than the pipes into and out of it. It will not be easy to drain it between uses. Draining is would require uninstalling it which will require turning off the water supply and disconnecting the fittings.
Question:	What size hose is needed for connection
Answer:	Tankless water heater, both the water inlet and outlet are 20 mm in diameter，International standard quadruple interface

Product description

Get hot water where it's needed, when it's needed with the Bosch ES4 Tronic 3000 T Electric water heater. This 4-gallon capacity point-of-use mini-tank fits right under your sink and provides a practical and effective solution to your hot water needs. This smaller model can be plugged right into a 120-volt outlet with the 36-37" cord, or can be installed in-line with a larger hot water source to provide "on-demand" use. The glass-lined tank offers great insulation and added durability, while the heater's fast recovery rate eliminates long waits for hot water. An external dial allows you to easily control the temperature range, and the temperature-and-pressure relief valve enhances your safety. The ES4 Tronic 3000 T from Bosch has a sleek and attractive exterior design that blends in seamlessly with existing decor when installed in a visible location, making this heater a great option in any room. Water Heater measures 13.75" H x 13.75" L x 13.5" D and weighs 17.3 lbs. Do not operate this water heater if it is has a damaged cord or plug, if it is not working properly, or if it has been damaged or dropped

Manufacturer Contact Information

800-283-3787

• CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
• LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
• INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
• FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
• EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water

User questions & answers

Question:	Is it necessary to connect an expansion tank to this heater (for safety purposes)? It states something to that effect in the user manual
Answer:	Yes, that is correct! Look for 1/2 to 3/4" hoses here on Amazon, or whatever you connection size is. They are very cheap and convenient here.
Question:	would this be able to supply a shower
Answer:	Installed at the outlet of the water heater, mainly to prevent electric shock, which is the second layer of protection
Question:	Can be used "in-line with a large hot water source"? Would it help a large bathtub that runs out of hot water before it gets full from main tank
Answer:	Should it be a white line? It means it has been powered on and can work after waiting for your settings
Question:	When this heater is connected to the hot water line, what happens with the cold water that was sitting in the pipes
Answer:	Dear Customer,  Thanks for your inquiry,BISELONG this water heater is not equipped with a remote control, you only need to adjust the temperature you want, generally do not need to adjust again.If you get any other question, please feel free contact us at [email protected] any time, we will do best to serve and help. Wish you pleasant shopping. Fly form BISELONG

Product features

Bosch ThermoTechnology

The Bosch Tronic 3000 T point-of-use electric mini-tanks are available in three compact sizes, which can be wall-hung (bracket included) or floor-mounted. They fit easily under a sink, even in a cabinet space, and because they have a sleek and attractive design, they blend in seamlessly with existing decor when installed in a visible location. Simply tap into the cold water line and install the water heater directly at the sink to provide hot water. Great for a wide range of locations!

Water Where You Need It

Provides hot water quickly at point of use and comes with temperature /pressure relief valve installed - 2.5 and 4 gallon tanks feature a simple 120 VAc plug-in connection (1440 watts).

Quality for Long-Life

Thick CFC-free foam insulation for maximum energy efficiency, glass-lined tank for durability.

Great for Small Spaces

Water heaters are compact and lightweight and can be floor, shelf, or wall mounted (except 7 Gallon) - features a sleek and attractive design to blend seamlessly with decor.

Minimize Wait Time for Hot Water

Waiting for hot water at a sink located far from a primary heating source can be frustrating. Only having access to cold water from a sink is just not useful, and plumbing a hot water line to every sink in a home or business requires time and money. To get hot water where it’s needed, when it’s needed, a better solution is to use the Tronic 3000 T from Bosch: a point-of-use electric mini-tank heater. This heater can supplement a primary water heating source, or be used under a single sink. In fact, the Bosch Tronic 3000 T can be used for three different applications: as a sole water heating source for a single sink, as a supplement to an existing heater located far from the sink, and as a buffer installed in-line with tankless water heaters that experience intermittent cold water, also known as 'cold water sandwiching'. No matter the configuration, there’s minimal stand-by loss from this premium mini-tank water heater.

Product description

This Smart Technology electric tankless water heaters is configured for climates where incoming water temperature can reach as low as 37 Degree. The ECO 24 is capable of heating nearly 3-Gallon per minute at this temperature. This model is well suited for homes in the Northern U.S. and Canada and in the southern U.S. that have large Roman-style or Jacuzzi tubs and that have generally more demanding water usage needs. Digital temperature control allows you to set your temperature in increments of 1 Degree. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

From the Manufacturer

This Smart Technology electric tankless water heaters is configured for climates where incoming water temperature can reach as low as 37 Degree. The ECO 24 is capable of heating nearly 3-Gallon per minute at this temperature. This model is well suited for homes in the Northern U.S. and Canada and in the southern U.S. that have large Roman-style or Jacuzzi tubs and that have generally more demanding water usage needs. Digital temperature control allows you to set your temperature in increments of 1 Degree. Prior to purchase and installation please verify this model is the rights size for your hot water needs and electrical requirements.

• Lifetime warranty
• Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
• Never run out of hot water with an ECOSMART tankless water heater
• Patented Self Modulating Technology and design.Activation flow 0.3 GPM
• ECOSMART tankless water heaters are 99.8-percent energy efficient
• 100 A

User questions & answers

Question:	I understand this unit, the ECO 24, requires 3 - 220 (double) breakers. What amperage for each
Answer:	40 amp 240v breakers (2 pole breakers)
Question:	Will this Eco 24 system work with a dedicated 100A sub-panel off a 200A service panel
Answer:	I'm not an electrician, but in your situation, all the power is coming from the main service panel. You should consult with an electrician to calculate your maximum load. I've had no issues with my Eco 24 running 3-40 amp breakers off a 200 amp service panel. If you have a heat pump you could be pushing the limit at certain times. Be safe, consult an electrician.
Question:	will this work to fill up small jacuzzi
Answer:	Hello Oscar. This unit is not intended for a Jacuzzi due to the flow rate that the Jacuzzi requires. Instead, Ecosmart manufactures a product specifically for this. It is the Smart SPA and we have it for sale on our Amazon store. GadgetsGo is an Authorized Ecosmart Dealer.Kind Regards,Ross GadgetsGo
Question:	i have 6 bathrooms, 2 laundry rooms will one do the job? or i need two
Answer:	Hello Raz,Thank you for your question. I am replying in less than one hour, after business hours, to expedite your request.Actually it does not matter how many bathrooms your home has. What matters is how many points of use that you will use at the same time. So to determine whether this or any tankless heater will work, just add up the total water flow rate in gallons per minute ("GPM") of all your points of use. A shower flow rate can range from 1.5 to 2.5 GPM. A bathroom sink: 0.75 GPM. A clothes washer: 3 to 4 GPM.So, if you expect only to have one shower and one sink running at the same time, this will give you at least 105F hot water, if your incoming cold water temp is above about 55F.Please let me know if I can assist you further.Kind Regards,Ross KelsonGadgetsGoP.S. If you have found my answer helpful, please prefer us when you purchase. You will continue to get priceless service after the sale.

Product features

3 Smart Steps for Endless Hot Water

Step 1: Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. A lower inlet water temperature will require a higher kilowatt product.

Step 2: Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature. Tankless electric water heaters are sized for maximum simultaneous use, not maximum fixtures in your home.

Step 3: Determining specifications and electrical infrastructure is important because without the correct infrastructure your unit may not fit into your breaker panel.

Product description

Specifications:

Material: Stainless Steel Shell

Color: Black, Golden, Red(optional)

Power: 3000W

Current: 25-32A

Voltage: 110V

Rated Frequency: 60Hz

Rated Pressure: 0.4-0.6Mpa

Waterproof Grade: IPX4

Temperature: 30-55℃(Considering the use environment in severe cold areas may not reach the maximum temperature of 55℃)

Installation wire diameter: 1.5-2.5mm² copper wire

Water pipe interface: G 1/2" interface

Size: Approx. 20 x 10.5cm / 7.87 x 4.13inch



Package Included:

1 x Water Heater

2 x Fixing Screws

2 x Screws Protector

1 x Manual

Note:

1. Please note this item should get the water first and then link the electricity when installing.

2. You'd better install this item vertically to ensure long service time.

3. Please kindly make a note if you need any adapter.

4. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

• This is a water heater ( 7.87 x 4.13inch ; 30-55℃ )for the application of changing the cold water into hot water and it will meet your various needs such as used in kitchen, bath room, public restroom, etc.
• electric water heater is a high efficient water heater with compact size to produce the hot water very quickly.LCD digital temperature display.
• water heater thermostat : Freely adjust water temperature by water flow, simple operation.
• Safe heater, electricity saving, water saving, no pollution, no exhaust gas.
• Temperature: 30-55℃(Considering the use environment in severe cold areas may not reach the maximum temperature of 55℃)

User questions & answers

Question:	Will this work in an r.v. with 30amp plug
Answer:	Yes
Question:	Will it switch off automatically when not in use
Answer:	Yes, it is tankless, so it only draws electricity when you turn on the hot water faucet. It turns off when you turn off the faucet. No need to unplug it when not in use.
Question:	Can this be used on an out door hose, to make hot water come from the hose? I am looking for hot water for dog washing
Answer:	Only if the hose is connected to it after it has been installed in an up-right position, in a dry, covered space.
Question:	If connected to a hot water line (for quicker hot water) will it keep the water the same temp or will it heat the hot water more making it unsafe
Answer:	we found that it was not overly efficient and replaced it with a different unit.

• 🚿【TIPS】Please notice that the 18KW tankless water heater requires 2 x 40 AMP breakers and 2 x 8 AWG wire, the Min. Water Flow is 0.4GPM/1.5L/min. The 24KW tankless water heater requires 3 x 40 AMP breakers and 3 x 8 AWG wire, and the Min. Water Flow is 0.66GPM/2.5L/min.
• 🚿【Save Money Save Cost】No need to preheat before using instant tankless water heater. After using our Rinkmo high efficient water heater, you will find your water Heating Costs Reduce Up to 60%, due to our heater is 99.8% Energy Efficient, you can get hot water within 3s; Create heat without direct contact with metals,No mineral buildup so you don't need to maintenance or fix it and replace the heater coils, No expensive maintenanc cost in the future.
• 🚿【Stable Water Temp for Whole House 】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
• 🚿【Stable Water Temp for Whole House】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
• 🚿【Compact Size Save Space】Rinkmo water heater only like a small suitcase, save your space and giving more to your living area. Easy to install and operation, set temp by turning the button, press the button to switch between Fahrenheit/ Celsius.

Product features

Rinkmo Electric Tankless Water Heaters Help You

Rinkmo has developed a new line of more efficient electric tankless water heaters within 3 years, which with improved design and state of the art technology.

It is a new generation of instant and efficient electric tankless water heaters, safe, efficient and cost effectiveness never before obtainable. Radically solve the problems.

You can install it anywhere hot water is needed.

Rinkmo always cares what consumers care about.

No Worry

Approved.

No above bad things happened under Rinkmo, you can enjoy your life without this terrible things even you have hard water.

Endless Hot Water

Not worry about the hot water even you have a long shower time.

No need to preheat, 3s you can get the hot water you want, no annoying delay and cold water.

Just turn on the tap or shower.

It can run both of our showers and dishwasher/washing machine without issue, up to 3 x faucet, 2 x shower at the same time.

Well suited also good for homes in the Northern U.S. and Canada or in the southern U.S. that have large Roman-style or Jacuzzi tubs that have generally more demanding water usage needs.

Get Comfortable Experience

Rinkmo use high quality temperature sensors and smart flow sensors, it is very important for our using experience.

So you can still get stable temperature water instead of scalding hot water, when you reduce flow rate or low water pressure.

The water temperature will not fluctuates anymore when you take shower and bathe baby.

-Auto protection: when it is detected that the outlet temp reaches 167 ° F (75 ° C) ,the system immediately cuts off heating for safe.

-Temperature abnormal reminder: The display will alarms if the inlet water temp <37° F, or the outlet temp >167° F

Fundamentally Solve Customer Problems

TURELY SAFE compared to other Traditional electric water heater or storage water heater.

Note

18kw Electric Tankless Water Heaters need:

Breaker:2x40AMP

Cable: 2x8AWG

Volts:240/208

Compact Design

Save space design, allows you install it in non-traditional spaces such as the utility room, basement, garage, attic, crawl space or even a closet.

Easy to read digital temperature display, no any complicated requirements for installation without minimal noise output.

Size: 18x14x3.7in

Weight: 11.2lb

Well sealed packaged that you can get a intact product, no any dented or damage.

Save Money Save Time

1. Compared to traditional tanks water heater:

Rinkmo instant Electric Tankless Water Heater only turn on when you need hot water, reduce the store heat loss, saving up to 50% in water heating costs, and you can get the fresh water.

2. Compared to other Electric Tankless Water Heater:

Totally solve most of safe problem and high maintenance costs, more cost-effective under our Original Water Pipe and Electricity Heating Separate tech:

304 stainless steel water pipe, healthy.

No mineral builup, no need to clean it.

No dirty water

You don't need to ask a plumber to repairing machine multiple times.

Real savings for your future cost, time and money.

Good for Other Commercial Places

Rinkmo Electric Tankless Water Heater not only for home use, but also for many other commercial places where need instant, endless and safe hot water, such as: apartment, barbershop, hotel, beauty salon, gym center, restaurent and so on.

More Smart Design:

-High quality sheet metal shell, fireproof

-Screen shows actual outlet water temperature clearly instead of the setting temp, safer

-Machine will auto stop if no water be heated.

-Adapt to 2 voltages: 240V/208V both ok, just 1 button to set it when install

-Cleanable filter

First, before order unit, you need to check below things:

Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location.

Second

Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature.

Third

Next you need determining specifications and electrical infrastructure.

Product description

Professional classic® tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use or multiple applications

• External adjustable digital thermostatic control with LED display (+/1 degree accuracy
• Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
• Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
• 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
• Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
• 54 A

User questions & answers

Question:	We have a 500sq' apt. 1 kitchen sink, 1 lav sink and tub/shower. This tankless heats water to both sinks but nothing to the tub/sh. Help
Answer:	Sinks have aerators to slow down the water where a tub doesn't. It sounds like one possibility is that your exceeding the GPM for this heater. Next possibility, double check an measure your actually getting at least 240v at the heater, I had an issue where my unit was only getting 235v an it was causing a similar issue where only one of the two heating elements was activating. I had it set to 125F but it was coming out 100F. It was warm and without a meter I would of thought it was working correctly until I tried filling a tub. It couldn't even get the water warm. I pulled my wires out an restripped an cut an screwed them in an it fixed my problem, now its measuring around 245v. Make sure there is no copper showing after screwing down your input wires. Now filling the tub I noticed after about 10-15 seconds the water gets too hot to touch. I set it to 135F.
Question:	Do these tankless water heaters require an overflow line to the outside of the home or a pan like is required on normal water heaters
Answer:	No tank, so, no overflow line required. It mounts on the wall. A pan is needed if required by building code in your city.
Question:	what are the wiring and power requirements
Answer:	good morning,60 amp breaker and , number 6 cable !thank you have a great day!
Question:	How many amps are needed for rheem rtex - 13 240v heating tankless electric water heater
Answer:	Hello-The RTEX-13 requires 1x 60A@240V breaker / 6 AWG recommended wire size.Specs - http://cdn.globalimageserver.com/fetchdocument-rh.aspx?name=Specification-Sheet&id=fc3235b7-7cd0-42cd-93bc-7169ea92be31 Rheem 800-432-8373I hope this helped :)Ben

Product features

About Us

Brothers Richard and Donald Rheem founded Rheem Manufacturing Company in Emeryville, CA, in 1925. While the company has produced a number of products in its nearly 100 years of operation, Rheem is currently the manufacturer that produces heating, cooling, water heating, pool & spa heating and commercial refrigeration products, and it is one of the largest manufacturer of water heating products in North America.