13 best rheem indoor heaters

Rheem is a well-known manufacturer of water heating products, including indoor water heaters.They offer a variety of models designed to provide hot water for residential and commercial applications. Here are some key features and information about Rheem indoor water heaters:

  1. Types of Indoor Water Heaters: Rheem produces different types of indoor water heaters, including tankless (on-demand), tank-type (storage), and hybrid models. Each type serves specific needs and has its own advantages.

  2. Tankless Water Heaters: Rheem tankless water heaters heat water on-demand, providing hot water only when it is needed. They are known for their energy efficiency and space-saving design, as they don't require a large storage tank.

  3. Tank-Type Water Heaters: Rheem offers tank-type water heaters with various storage capacities. These units store and heat a specific amount of water, ensuring a continuous supply of hot water. They are available in both electric and gas models.

  4. Hybrid Water Heaters: Rheem hybrid water heaters combine elements of both tankless and tank-type heaters. They use a heat pump to efficiently heat water, making them more energy-efficient compared to traditional tank-type models.

  5. Energy Efficiency: Many Rheem indoor water heaters are designed with energy-saving features, such as high energy factor (EF) ratings, which can help reduce energy consumption and lower utility bills.

  6. Smart Technology: Some Rheem models are equipped with smart technology, allowing homeowners to monitor and control their water heater remotely through a mobile app.

  7. Durable Construction: Rheem is known for producing water heaters with durable components and high-quality materials to ensure longevity and reliability.

  8. Warranty: Rheem typically offers warranties on their water heaters, providing peace of mind for consumers in case of any manufacturing defects or malfunctions.

  9. Installation and Maintenance: Proper installation and regular maintenance are crucial for the performance and longevity of any water heater, including Rheem models. It's recommended to have a professional plumber install and service the unit.

  10. Compliance with Regulations: Rheem water heaters are designed to meet or exceed industry standards and regulations for safety and performance.

Remember, when considering a Rheem indoor water heater, it's important to choose a model that matches your specific hot water needs, fuel type availability (electric or gas), and installation requirements. Always follow the manufacturer's instructions for installation, operation, and maintenance.

Below you can find our editor's choice of the best rheem indoor heaters on the market
  

Rheem RTGH-95DVLN-2 Tankless Water Heater, Grey

Rheem

Based on 6 reviews Check latest price

Product description

Rheem Prestige® RTGH-95DVLN-2 is a high efficiency condensing indoor natural gas tankless water heater designed for continuous hot water. Industry leading low flow activation with a minimum flow rate of .26GPM and minimum activation flow rate of .40GPM ensures hot water is received even in low demand situations. Ultra Low NOx burner meets SCAQMD rule requirements of safety with low emissions. While our exclusive Guardian Overheat Film Wrap prevents our units from reaching the dangerous temperatures others can. Add in our maintenance notification settings, self-diagnostic system and EcoNet enabled mobile app feature (additional kit available), buying the Rheem Prestige tankless water heater makes perfect sense. New 2” venting with band connections allow up to 150’ with a 3” PVC or 60’ with a 2” PVC pipe. Included are also a built-in condensate neutralizer, digital remote control and 10ft. of thermostat wire. Can be used with up to 5 bathrooms depending on inlet temperature; .93UEF (.96EF Canada), 199,000BTU efficiency. Professional installation is required otherwise warranty void. Warranty: 12yr heat exchanger, 5 yr parts and 1 yr labor.

  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 199, 900 BTU (gas consumed per hour)
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Recirculation pump ready kit ready
  • For use indoor only

User questions & answers

Question: Whats the difference between this and the rtgh-95dveln
Answer: I think the devln has wifi capabilities.
Question: Can I run 2 units in tandem and will the controller talk to each other
Answer: Hello- Yes. You can connect 2 alike units using an RTG20040 EZ Link cable. Thanks :) Ben
Question: Is the thermostat included
Answer: Yes, a thermostat is included.
Question: Whats the between this and the difference rtgh-95dvln
Answer: Hello- The main difference was an upgraded fan, which in turn, allowed them to downsize the vent ports from 3" down to 2". So both of the connections on top for intake air/exhaust are now ran in 2" For more info, please call Rheem at 800-432-8373 Thanks Ben

Rheem RTG-70DVLN-1 Tankless Water Heater, Grey

Rheem

Based on 12 reviews Check latest price

Product description

Rheem RTG-70DVLN-1 is a mid-efficiency indoor natural gas tankless water heater designed for continuous hot water. Industry leading low flow activation with a minimum flow rate of .26GPM and minimum activation flow rate of .40GPM ensures hot water is received even in low demand situations. Ultra Low NOx burner meets SCAQMD rule requirements of safety with low emissions. While our exclusive Guardian Overheat Film Wrap prevents our units from reaching the dangerous temperatures others can. Add in our maintenance notification settings, self-diagnostic system and EcoNet enabled mobile app feature (additional kit available), buying the Rheem RTG tankless water heater makes perfect sense. Included are a digital remote control and 10ft. of thermostat wire. Best if used with up to 3 bathrooms; .81-.82UEF (.82EF Canada), 160,000BTU efficiency. Professional installation is required otherwise warranty void. Warranty: 12yr heat exchanger, 5 yr parts and 1 yr labor.

  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 160, 000 BTU (gas consumed per hour)
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Recirculation pump ready kit ready
  • For use indoor only

User questions & answers

Question: is this propane
Answer: The N in the model notates this unit using natural gas. The propane version is as follows RTG-70DVLP-1.
Question: will a 4 inch vent pipe work...will a 1/2" gas feed pipe work
Answer: A 3"/5" concentric vent is needed. 1/2" will suffice if close to supply of has.

Rheem RTG-84DVLN 8.4 GPM Low NOx Direct Vent Tankless Natural Gas Water Heater

Rheem

Based on 36 reviews Check latest price

Product description

Rheem RTG-84DVLN Direct Vent Indoor Natural Gas Tankless Water Heater Residential Tankless Water Heaters - Rheem tankless gas water heaters offer you the perfect solution to heat your water at home. Imagine never running out of hot water again. Rheem provides to you innovative, new tankless products that provide a continuous supply of hot water from energy efficient and space saving design units. Specifications - 8.4 gal./min. at 35A-Degree F rise max. - 6.6 gal./min. at 45A-Degree F rise : - New. 3"/5" Concentric Vent System with Integrated Condensate Collector - Connects to Metal Fab Inc.

From the Manufacturer

Rheem RTG-84DVLN Direct Vent Indoor Natural Gas Tankless Water Heater Residential Tankless Water Heaters - Rheem tankless gas water heaters offer you the perfect solution to heat your water at home. Imagine never running out of hot water again. Rheem provides to you innovative, new tankless products that provide a continuous supply of hot water from energy efficient and space saving design units. Specifications - 8.4 gal./min. at 35A-Degree F rise max. - 6.6 gal./min. at 45A-Degree F rise : - New. 3"/5" Concentric Vent System with Integrated Condensate Collector - Connects to Metal Fab Inc.

  • Natural Gas Tankless Water Heater
  • Direct Vent Indoor
  • 8.4 gal/min. at 35-Degree Rise
  • UMC-117 remote control and 10-Feet of thermostat wire is included
  • Low Nox Version

User questions & answers

Question: I have this same model installed that broke, would I be able to unhook all the pipes, remove and just hook up a new one using existing pipes
Answer: Yes.
Question: How many simultaneous showers will this (the so-called 8.4 GPM unit) handle (in the winter, in a northern state
Answer: As far 2 showers at the same time you will be able to tell . The water will feel cooler but not cold. In the winter time I turn mine up to 140. The thermostat only goes up to 130 , but in the book it shows you how to turn it up.
Question: What size gas line do I need and is everything I need to install the heater come with it
Answer: Minimum size gas line is 3/4". The one I bought came with the shut off valves for the gas and water, but some don't. None of them come with the vent cap and special double wall 5" exhaust duck. It isn't required but you should consider a good drip pan since it does not come with one. It needs electricity. It has a 110V cord/plug, but you have to have an outlet to plug it into. It comes with the remote mounted controller, but it only has about 10' of cord. If you are mounting this in an attic and mounting the control panel down on the main floor you will most likely have to buy some more thermostat cord. It is readily available at any home improvement center and is cheap.
Question: What is the BTU
Answer: 11,000 min. 180,000 max BTU'sIn you need more technical info or want to see other sizes. Go to Rheems website. http://www.rheem.com

Rheem RTGH-84DVLN Indoor Direct Vent Natural Gas Condensing Tankless Water Heater Low Nox

Rheem

Based on 35 reviews Check latest price

Product description

Next Generation Burner Technology Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate UMC-117 remote control and 10 ft. of thermostat wire is included EZ-Lint cable available for high demand applications to connect two thankless units to operate as one Manifold up to 6 units with an optional MIC-6 manifold control board Exclusive! All Rheum models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly High-altitude capability - up to 9,840 ft. elevation above sea level (no chip required) Exclusive! Guardian OFWTM overheat film wrap All Rheum thankless models are third-party efficiency certified by GAMA Continuous hot water, energy saving and compact, space saving design Intelligent electronic controls designed to increase energy efficiency and safety Self Diagnostic System Digital display shows temperature setting and maintenance codes.

From the Manufacturer

Next Generation Burner Technology Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate UMC-117 remote control and 10 ft. of thermostat wire is included EZ-LinkTM cable available for high demand applications to connect two tankless units to operate as one Manifold up to 6 units with an optional MIC-6 manifold control board Exclusive! All Rheem models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly High-altitude capability - up to 9,840 ft. elevation above sea level (no chip required) Exclusive! Guardian OFWTM overheat film wrap All Rheem tankless models are third-party efficiency certified by GAMA Continuous hot water, energy saving and compact, space saving design Intelligent electronic controls designed to increase energy efficiency and safety Self Diagnostic System Digital display shows temperature setting and maintenance codes

  • Built-in electric blower Supplied with a 120 volt power cord
  • Environmentally friendly Low Knox burner meets SCAQMD rule 1146 requirements
  • Freeze protection to -30 Degree F

User questions & answers

Question: Gallons per minute this unit produces
Answer: I believe mine is 9 gallons per minute. It serves a full bath and a 3/4 bath and has never run out of water.
Question: How hot can the water get from this unit. I want to run a washer that needs 160 degree water. Will this get this hot
Answer: Rheem Unit Rec temperature is 120 degrees & maxes out at 140 degrees. So this unit will not meet your requirements.
Question: Is this unit need electricity
Answer: Yes. The ignition and internal controller require electricity. The heat is provided by the gas, however.
Question: Does this model have a battery back-up (electronic ignition) system for when the power goes out
Answer: Buy a UPS backup and plug this unit into it instead. You can read how much this unit draws when running and figure out much run time you would get from the UPS back up you purchased. I'd imagine any UPS (Uninterrupted Power Supply) backup purchased over a $100 should easily get you an hour or two of continuous use if it's just the blower that's requiring power. A UPS will recharge itself when power is back on so it's really a place and forget solution. You should change the battery in the UPS once a year but check individual UPS backup unit recommendations. This one seems geared for Tankless Water Heaters and other gas appliances and says it should last for 7 days of normal operation -> https://www.amazon.com/HUGO-Battery-Tankless-Heaters-Appliances/dp/B00VQHUKTM/ref=sr_1_2_sspa?crid=1FVBRMYF9L2L7&keywords=ups+battery+backup+for+tankless+water+heater&qid=1575626757&sprefix=UPS+%2Caps%2C210&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzNFRLTDZDRzZOWjNOJmVuY3J5cHRlZElkPUEwOTIzNzEzM0dIN0VFQ1o3SDdRMyZlbmNyeXB0ZWRBZElkPUEwNTQ2NzAxSFM2Mk8zVEwzWFk0JndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

Based on 154 reviews Check latest price

Product description

All Rheem heating, cooling and water heater heating products meet and exceed rigorous industry standards for quality and reliability. From raw material delivery to finished product assembly, each phase in the manufacturing process is effectively overseen to ensure the highest quality in water heater manufacturing. Rheem products are frequently tested and certified by various government and third-party testing labs to ensure quality standards.

From the Manufacturer

All Rheem heating, cooling and water heater heating products meet and exceed rigorous industry standards for quality and reliability. From raw material delivery to finished product assembly, each phase in the manufacturing process is effectively overseen to ensure the highest quality in water heater manufacturing. Rheem products are frequently tested and certified by various government and third-party testing labs to ensure quality standards.

  • 94-Percent Energy efficient with stainless-steel condensing heat exchanger
  • Intelligent electronic controls designed to increase energy efficiency and safety
  • Third party efficiency listed by AHRI
  • Up to 38-Feet of 3-Inch PVC Pipe or 5-Feet of 2-Inch PVC Pipe
  • Low Nox Version

User questions & answers

Question: Does this Rheem suffer from the "cold water sandwich" problem
Answer: Hot water is only produced when there is demand for it and there is a short delay while the water is heated. So, you can get a momentary cool water output, but I would not call it a problem. In fact, I hardly notice if it happens.
Question: What is the difference between the RTGH-95DVLN & RTG-95DVLN models
Answer: The Rheem RTG series are Direct Vent indoor and outdoor models; the Rheem Prestige™ RTGH is a series of high efficiency condensing tankless indoor and outdoor gas water heaters designed for continuous hot water.
Question: how much gas does this use at when running. How many CCF. I currently have a 80 gallon high efficiency hot water now. Can I use this connection or do I need to run a 3/4 in gas line directly from the meter
Answer: The Rheem water heater uses 199,000 BTU or about 200 CF or 2 CCF. The Rheem installation manual is available on the Rheem web site. On page 53 of the manual, the manufacturer lists the minimum NG pipe size as 3/4 inch diameter. Typically, a tank type water heater has a 1/2 inch supply line that is reduced from a 3/4 inch or larger main supply line. So, you will need to replace the smaller gas line from the original reduction point to your new Rheem tankless water heater.
Question: I own a 4 bedroom house. I noticed Home Depot has a Rheem Ecosense 200DVLN. Would this one you have be sufficient
Answer: Based on Rheems' product information on their web site and the product specifications on The Home Depot web site, Rheem makes two sizes of tankless natural gas fuels water heaters. One is rated at 8.4 gallons per minute and the other size is 9.5 gpm. Rheem also makes these two sizes in both "condensing" type and "non-condensing" type. The Rheem Ecosense line seems to be just a slight re-branding for The Home Depot and the re-branded product does not seem to be any different than the standard Rheem product sold on Amazon. The Rheem Ecosense ECOH200DVLN at The Home Depot seem to be the same as the RTGH-95DVLN 9.5 sold on Amazon. they are both condensing type (most efficient and easiest to vent) an they both produce a maximum of 9.5 gpm of hot water. Both are the largest capacity models made by Rheem. I have a 4200 sq. ft home with three bathrooms. We can have two showers going and the dishwasher with no reduction in hot water temperature even in the winter (near Chicago) when the inlet water is very cold. So, I would say that the Rheem RTGH-95DVLN 9.5 gpm unit will meet your hot water needs.

Rheem RTGH-84DVLP Indoor Direct Vent Liquid Propane Condensing Tankless Water Heater Low Nox

Based on 5 reviews Check latest price

Product description

Next Generation Burner Technology Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate UMC-117 remote control and 10 ft. of thermostat wire is included EZ-Lint cable available for high demand applications to connect two thankless units to operate as one Manifold up to 6 units with an optional MIC-6 manifold control board Exclusive! All Rheum models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly High-altitude capability - up to 9,840 ft. elevation above sea level (no chip required) Exclusive! Guardian OFWTM overheat film wrap All Rheum thankless models are third-party efficiency certified by GAMA Continuous hot water, energy saving and compact, space saving design Intelligent electronic controls designed to increase energy efficiency and safety Self Diagnostic System Digital display shows temperature setting and maintenance codes.

From the Manufacturer

Next Generation Burner Technology Industry Best! .26 GPM Minimum Flow Rate, .40 GPM Minimum Activation Flow Rate UMC-117 remote control and 10 ft. of thermostat wire is included EZ-LinkTM cable available for high demand applications to connect two tankless units to operate as one Manifold up to 6 units with an optional MIC-6 manifold control board Exclusive! All Rheem models can be linked in up to 20 unit manifold installations by using the optional MIC-180 and MICS-180 manifold control assembly High-altitude capability - up to 9,840 ft. elevation above sea level (no chip required) Exclusive! Guardian OFWTM overheat film wrap All Rheem tankless models are third-party efficiency certified by GAMA Continuous hot water, energy saving and compact, space saving design Intelligent electronic controls designed to increase energy efficiency and safety Self Diagnostic System Digital display shows temperature setting and maintenance codes

  • Built-in electric blower Supplied with a 120 volt power cord
  • Environmentally friendly Low Knox burner meets SCAQMD rule 1146 requirements
  • Freeze protection to -30 Degree F

User questions & answers

Question: Does this come with exhaust vent
Answer: It comes with gray fittings on top that will accept 3" pvc in each. If the vent pipe will be less than 5' you can reduce them down to 2" pvc. You have to buy the pipe and any fittings necessary to reach the outside. It did come with a 3/4" gas shutoff valve.
Question: Is this natural gas product
Answer: They make them for natural gas and propane. Be sure you select the right one for your gas supply. I just replaced it because I bought a natural gas heater and I have propane and over time it didnt go well.

EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

EcoSmart

Based on 2 reviews Check latest price

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.

Rheem RTGH-90DVLN Prestige Indoor Condensing Ultra Low NOx Natural Gas Tankless Water Heater, 9.0 GPM,

Based on 3 reviews Check latest price

Product description

Rheem Prestige RTGH is a series of high efficiency condensing tankless gas water heaters designed for continuous hot water. 94% Energy efficient with stainless steel condensing heat exchanger. Intelligent electronic controls designed to increase energy efficiency and safety. Third party efficiency listed by AHRI.

Industry First! 0.26 GPM minimum flow rate, 0.40 GPM minimum activation flow rate. Self-diagnostic system for easy installation and service. Digital display shows temperature setting and maintenance codes.

Two-pipe direct vent system designed for PVC pipe. Built-in electric blower.

Exclusive! Guardian overheat film wrap (OFW). EZ-Link cable available for higher demand applications to connect two tankless units to operate as one. Manifold up to six units with an optional MIC-6 manifold control board. Manifold up to 20 units with the optional MIC-185 plus the MICS-180 manifold control assembly.

  • Indoor direct vent
  • 11,000 - 180,000 BTU/H
  • Manual gas isolation valve included
  • Digital remote control and 10 ft. of thermostat wire included
  • Up to .94 EF with stainless steel condensing heat exchanger

User questions & answers

Question: Is this electrical powered
Answer: A 120 VAC outlet is required for the control circuits. The heating is gas powered.

EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White

EcoSmart

Based on 3 reviews Check latest price

Product description

Configured for cold climates or high flow rates. Well suited where incoming water temperature can drop below 45 F. For use in more demanding water usage applications. Self modulating flow sensor technology regulates the amount of energy required to heat the water needed. Digital temperature display showing the outlet water temperature setting. Uses 9 KW standard Emerson electric heating elements with brass tops to prevent electrolysis. Copper heat exchanger. Automatic resettable thermostat. 40 DP breakers required. 112A draw. Required wire: 3 sets 8 AWG. Pipe fitting: 3/4'' NPT. Energy efficiency: 99.8%. UL and CSA certified.Weight: 11 lb. Lifetime warranty. It can provide between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature.

From the Manufacturer

This Smart Technology electric tankless water heater is configured for climates where incoming water temperature can reach as low as 37 degrees. The ECO 27 is capable of heating nearly 3 gallons per minute at this temperature. The ECO 27 is the largest electric tankless water heater available with Patented Self Modulating Technology. This model is well-suited for homes in the northern U.S., Canada, and in the southern U.S. for large Roman-style or Jacuzzi tubs that generally have 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 that this model is the right size for your hot water needs and electrical requirements.

  • Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
  • Digital temperature control in 1-degree increments allows control of hot water; Activation Flow: 0.3 GPM
  • Copper and stainless components designed for efficiency, durability and easy replacement.
  • Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
  • Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, 40 required breakers, 112.5 maximum power (AMP), 8 required wire.Amperage Draw:113 A
  • Required Breaker Quantity: Three 40 Amp Double Pole
  • Recommended Electrical Panel: 200 Amps

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: In order to have a 208 volt power you would need to be pulling off of 2 legs of a 3 phase service. Are you sure you have 3 phase?
Question: Can this unit supply a 3,700 sq foot home with 3 1/2 baths
Answer: Approx 7x11. The cover is approx 8x12
Question: What is the power consumption of this tank-less heater
Answer: This is a 240V/208V heater. At 240V this heater draws 6.25 amps.
Question: remote
Answer: Are you asking if it can be wired 208 volt? The answer is yes. I don't have any experience with model you are referring to otherwise.

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.

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY

Rheem

Based on 456 reviews Check latest price

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.

Rheem RTG-70XLP-1 Tankless Water Heater, Grey

Rheem

Based on 3 reviews Check latest price

Product description

Rheem RTG-70XLP-1 is a mid-efficiency outdoor liquid propane tankless water heater designed for continuous hot water. Industry leading low flow activation with a minimum flow rate of .26GPM and minimum activation flow rate of .40GPM ensures hot water is received even in low demand situations. Ultra Low NOx burner meets SCAQMD rule requirements of safety with low emissions. While our exclusive Guardian Overheat Film Wrap prevents our units from reaching the dangerous temperatures others can. Add in our maintenance notification settings, self-diagnostic system and EcoNet enabled mobile app feature (additional kit available), buying the Rheem RTG tankless water heater makes perfect sense. Included are a digital remote control and 10ft. of thermostat wire. As this unit is for use outdoors no venting is required. Best if used with up to 3 bathrooms; .81-.82UEF (.82EF Canada), 160,000BTU efficiency. Professional installation is required otherwise warranty void. Warranty: 12yr heat exchanger, 5 yr parts and 1 yr labor.

  • Exclusive Water Savings technology conserving up to 1, 100 gallons per year
  • 160, 000 BTU (gas consumed per hour)
  • Exclusive Hot Start Programming minimizes cold water burst by staying in ready-fire state
  • Recirculation pump ready kit ready
  • For use outdoors with freeze protection up to -30 degrees

User questions & answers

Question: Can this unit be change to propane with a propane orifice
Answer: If your buying the 70XLP-1 it should already be set up r propane, that's what the LP stands for, liquid propane. hope it helps

Rheem RTG-84DVP Low Nox Direct Vent Tankless Water Heater Liquid Propane Energy Star 8.4 GPM

Based on 23 reviews Check latest price

Product description

Rheem RTG-84DVLP Direct Vent Indoor Propane Tankless Water Heater Residential Tankless Water Heaters - Rheem tankless gas water heaters offer you the perfect solution to heat your water at home. Imagine never running out of hot water again. Rheem provides to you innovative, new tankless products that provide a continuous supply of hot water from energy efficient and space saving design units. Specifications - 8.4 gal./min. at 35A-Degree F rise max. - 6.6 gal./min. at 45A-Degree F rise : - New. 3"/5" Concentric Vent System with Integrated Condensate Collector - Connects to Metal Fab Inc.

From the Manufacturer

Rheem Tankless is about one third the size of a conventional water heater. Sophisticated technology has reduced the size and increased the features and benefits. A digital display makes setting a precise water temperature, or monitoring the unit's status, a snap! Its compact size will leave room for a water softener or extra storage.

  • Minimum flow rate of .26 gpm, .40 gpm minimum activation flow rate, 180,000 BTU
  • Includes UMC-117 remote control and 10-feet of thermostat wire
  • Vent termination kit required
  • Eligible for federal tax credits for energy efficiency
  • Meets low nitrogen oxide emission standards

User questions & answers

Question: Does anyone know how much electricity this unit uses (operation/standby/antifreeze)? I can't find it on the spec sheet
Answer: Only the controller and igniter uses electricity. It is hardly any. Maybe an amp.
Question: What unit is shipped rtg-84dvp or rtg-84dvlp ? can this be converted to natural gas
Answer: You should call the manufacturer and ask them if they have a conversion kit from propane to natural gas...my "guess" is no, it cannot be converted to natural gas, simply because Rheem manufactures units specifically for natural gas.
Question: What Vent kit would I need for this vertical unit
Answer: The actual model number is RTG-84DVLP per the product details. It requires 3-in x 5-in (Concentric) venting. There is a kit and it is Rheem Model RTG20211 Vertical Vent Termination Kit.
Question: ac or batteries
Answer: If your refering to power requirement it runs on 120 volt ac standard plug and if power goes out ,no hot water

Rheem RTGH-RH10DVLN Prestige Series Professional Condensing Tankless Gas Water Heaters With Built-in Recirculation, Gray

Based on 2 reviews Check latest price

Product description

Rheem Prestige® RTGH-RH10DVLN-2 is a high efficiency condensing indoor natural gas tankless water heaters designed for continuous hot water. The built-in recirculation pump with auto-learning programing not only provides instant hot water but also only provides it when needed. Industry leading low flow activation with a minimum flow rate and minimum activation flow rate of .50GPM. Ultra Low NOx burner meets SCAQMD rule requirements of safety for low emissions. Additional safety features include flame sensor, overheat cut off switch, gas and water leak detectors, and exhaust and water temperature sensors. Venting up to 100’ with 3” PVC or up to 50’ with 2” PVC pipe. Can be used with up to 5 bathrooms depending on inlet temperature; .94UEF (.96EF Canada), 199,000BTU efficiency. Professional installation is required otherwise warranty void. Warranty: 12yr heat exchanger, 5 yr parts and 1 yr labor.

  • Rheem Prestige RTGH is a series of high efficiency condensing tankless gas water heaters designed for continuous hot water and 180,000 btu
  • With dual stainless steel condensing heat exchanger, Max GPM of 11 (on 180K BTU models)
  • Instant Hot Water at the Tap, Programmable time based activation, Save Time on Install with Built-in Pump, Reduces Water Waste

User questions & answers

Question: Does it come with a sensor value
Answer: Not sure what you mean by "sensor value".
Question: What type of plumbing is required to get water circulating into the house for instant hot water
Answer: The easiest way is to use the existing cold water line in conjunction with a Grundfos Hot Water Recirculation Valve. This valve gets installed at the faucet farthest from the water heater. Using the internal circulation pump in the Rheem heater the system pumps hot water out to the recirculation valve which then opens to allow the circulating water to return to the water heater via the cold water line. I installed this Rheem heater and recirculation valve a month ago and it works very well.

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