9 best bosch electric heaters

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

120V - requires hard wiring. 1440W element. Magnesium anode rod. Rectangular shape with 2" of foam insulation. Glass lined tank for longer life. 6 year on heater and 1 year on parts for both commercial and residential use. Temperature/pressure relief valve included. Can be mounted both horizontally or vertically. Mounts on floor or wall. Meets ASHRAE 90. 1. See Info Page for technical and installation specifications.

Manufacturer Contact Information

800-283-3787

• CONVENIENT HOT WATER HEATER: 7 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 17.5 W x 17.5 H x 14.5 D Inches
• INSTALLED VERTICALLY OR HORIZONTALLY: This larger model can be mounted vertically (7 gal. of water supply) or horizontally (5.1 gal. of water supply)- vertical orientation is installed with the cold and hot lines on top of the unit
• RELIABLE WATER SOURCE: Easily hard-wire the 7-gallon model to provide the on-demand reliable water source your home or office needs
• IMPORTANT INFORMATION: Heating capacity of 1440 watts and a temperature range of 65-145°F max. Operating pressure-150 psi. Water fittings-3/4 inch Male NPT. Electrical requirements (Amp 12A/Volts 120)
• EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included for vertical orientation only); simply tap into the cold water line and install the water heater directly at the sink to provide hot water

User questions & answers

Question:	What is the recovery time if the 7 gallons of hot water is used
Answer:	I have the 4 gallon tank and it is not too bad for the reheat
Question:	Can I reduce the pipe's size from 3/4 in to 1/2 in without any negative effect on the unit
Answer:	No harm to unit.....Max water flow will be reduced a little.
Question:	Can i use this to replace a small rv hot water heater
Answer:	Yes, but realize that it's electric and draws quite a few amps, most rv water heaters are propane.
Question:	The Manual request for the ES8 a 20 Amp breaker and 12GA wire. The wattage however is 1440 with 12 Amps. Why then 20 Amp breaker and not
Answer:	I would use a 20 amp circuit with 12 ga wire but there are no inrush concerns with a resistive load. A heating element does not have a higher initial current draw like a motor. It draws 1440 watts or 12 amps at 120v. Since 14 ga wire must be fused for 15 amps, this device by itself is already at 80% of the circuit’s capacity.

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

Upgrade your commercial (or residential) water heating solution with the Bosch US3-2R Tronic 3000 Electric Tankless Water Heater. This 3.6 kW under-sink tankless water heater is designed to provide an endless supply of instantaneous hot water to one or more sinks. This electric heater can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible, worry-free setup. The ultra compact and lightweight unit runs at 98% thermal efficiency, so stand-by loss is minimal. Plus, it does not require a temperature or pressure relief valve for your convenience. The roundagon Bosch DNA design provides a modern look that seamlessly blends in with existing decor when installed in a visible location and is built of durable plastic housing for long-lasting use. Due to the amperage requirement this item will be hard wired. It also includes a 5 year limited warranty on the copper heat exchanger and 2 year limited warranty for all other components so you know your purchase is protected. This water heater measures 6.6 x 12.8 x 2.9 , making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and offices. Save space and energy with the Bosch US3-2R Tronic 3000 Electric Tankless Water Heater!Bosch Thermotechnology is a leading source of high quality water heating and comfort systems. The company offers electric whole house and point-of-use water heaters, elcetric heatpump minisplit HVAC systems, and connected control thermostats. Bosch Thermotechnology is committed to being Simply Smart by offering products that work together as integrated systems that enhance quality of life in an ultra-efficient and environmentally friendly manner.

Manufacturer Contact Information

800-283-3787

• NEW LOW ACTIVATION FLOW RATE: A new lower activation flow rate of only 0.3 GPM allows for use with newer, low flow faucets
• ELECTRIC TANKLESS WATER HEATER: 3.6 kW under-sink tankless water heater designed to provide an endless supply of instantaneous hot water to one or more sinks
• FLEXIBLE INSTALLATION: Can be installed in a 360 degree orientation so you can position the unit in tight under counter spaces for a flexible, worry-free setup. Due to the amperage requirement this item will be hard wired.
• EFFICIENT DESIGN: Ultra compact and lightweight design with 98% efficiency and no stand-by heat loss plus does not require a temperature or pressure relief valve
• IDEAL SIZE: Measures 6.6" x 12.8" x 2.9", making it the perfect size for light commercial applications such as shopping malls, airports, stadiums and offices. Due to the amperage requirement this item will be hard wired.

User questions & answers

Question:	Could I use this water heater for two salon sinks? Or would I need to get one heater for each sink
Answer:	it I’ll be better one per sink but I’m pretty sure you can manage to have one unit for 2 as long as you don’t use both sinks at the same time.
Question:	What type of hose connector
Answer:	standard faucet connectors
Question:	can this be installed on the hot water side of a supply line to quickly provide hot water to a sink before the hot water arrives from the hot water he
Answer:	Probably
Question:	Can this unit be installed outdoors
Answer:	No, it has to be inside

Product description

The Bosch US12 Tronic 3000 electric tankless water heater is designed to provide an endless supply of hot water to kitchen, bathroom, and handwashing sinks. This 12 kW electric heater eliminates long waits for hot water by using a dual chambered copper heat exchanger. The unit runs at 98% thermal efficiency, so stand-by loss is minimal. This model features on-unit thermostatic control, so you can set the water temperature to your desired range. Plus, it mounts on the wall in any direction and is compact and lightweight, making it a great choice for a variety of spaces. With its top performance specifications and versatility, the U12 Tronic 3000 is a great way to get the hot water going in kitchens, offices, at warehouses, service stations, stores, and concession stands. This item requires professional installation and hardwiring and is only designed to operate on an electric voltage of 240.

From the Manufacturer

Ultra compact and lightweight, these five point-of-use / under-sink tankless water heaters were designed to provide an endless supply of hot water for 1 kitchen and / or bathroom sink at a time in commercial, industrial, and residential applications. Advantages include 98 % efficiency with minimal stand-by loss. Most models come equipped with high / low kW settings and universal horizontal / vertical mounting options.

Manufacturer Contact Information

800-283-3787

• CONVENIENT TANKLESS HOT WATER HEATER: 12 kW output tankless electric water heater eliminates long waits for hot water at point-of-use
• EASY INSTALLATION: Easily install under any bathroom or kitchen sink and get on demand hot water at your every need. Common Applications-Commercial tentant improvements (ie: office suite with a sink or an attached bathroom), Garage apartments, In-law suites
• TEMPERATURE CONTROLED: Features thermostatic control for easy temperature output adjustments to match your preference
• IMPORTANT INFORMATION: Unit is only designed to operate on 240-Volt. Dimensions : 12.75 x 6.5 x 3 Inches
• GREAT EFFICIENCY: 98% efficient with minimal stand-by loss. Water pressure range of 10-150 PSI

User questions & answers

Question:	Is this item here the US3. I need the 120volt unit
Answer:	No, the 120V unit is the 3.2 KW unit and is the Bosch Tronic 3000 US3. GlobalTowne is an Authroized Bosch Distributor.
Question:	On the 9.5k model. At what flow rate does it turn on
Answer:	not sure when it actually turns on, but I usually ran it at about 1.1 gallons per minute. Sometimes, if the cold water was running or the toilet was flushing, the water flow was not fast enough to turn it on.
Question:	Could two of these connected in series provide a higher gpm rate? (my winter water temp is often below 40f. looking to get a little over 2gpm
Answer:	No, The Bosch electric tankless water heaters cannot be fed into one another, Max temperature into the unit is 86 degrees F. For good hot water at 2 gpm I would suggest the high KW unit Bosch Tronic 6000C WH17. This unit is a 17KW unit and requires 2 - double pole 40 amp breakers with 8 gauge wire. GlobalTowne is an Authorized Bosch Distributor.
Question:	The 12kw unit specs from bosch recommend 6 gauge wire. is it safe to use 8 or 10 gauge wire
Answer:	8 or 10 gauge wire will not be heavy enough for the Bosch US12 as it is a 12 KW unit and requires 6 gauge wire. GlobalTowne is an Authorized Bosch Distributor.

Product features

Reliable Point-of-Use Heat

Provides hot water with electrical power at the sink where you need it, so you don’t waste time or water waiting, and is backed by a limited 5-year warranty on the heating element and 1-year limited warranty on other components.

Save Energy and Money

Because water is heated directly without the use of a storage tank, there’s no standby energy loss experienced by traditional tank heaters, and no pressure or relief valve is required.

Great for Small Spaces

These tankless heaters are compact and lightweight and can be mounted vertically or horizontally (except model US12) – featuring an understated design to blend in seamlessly with existing decor.

The Benefits of Going Tankless

Waiting for hot water at a sink located far from the 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 install the Tronic 3000 from Bosch: a point-of-use electric tankless water heater. Tankless heaters are a great energy saving option – and when you save energy, you save money! In addition, the Tronic 3000 takes up far less space than a traditional heater, and can be wall mounted right under the sink, taking up practically zero space in your home. Because they run on your home’s electricity and don’t hold water, less overall maintenance is required. With less wait for water, savings of energy (and therefore money!) and less space, the benefits of choosing tankless heaters for your home or business are obvious.

Product description

The compact and powerful BOSCH WH17 Tronic 6000 will supply your entire house with hot water when and where you need it. This tankless electric water heater works "on-demand" to eliminate the wait for hot water. This heater works at 97% thermal capacity, reducing any stand by water loss. The built-in flow sensor ensures a constant output temperature across all applications. This heater delivers hot water to 1-3 major applications at a time, anywhere from a residential home to an office space. GPM output at temperature rise of: 75 degrees: 1.6 output, 60 degrees: 2.0 output, 45 degrees: 2.3 output.

Manufacturer Contact Information

800-283-3787

• CONVENIENT TANKLESS HOT WATER HEATER: 17.3 kW tankless whole house electric water heater provides hot water when needed, for as long as needed
• EASY INSTALLATION: Can be installed virtually anywhere for commercial or residential applications
• CONSISTENT TEMPERATURE: Polymer encased elements & built-in flow sensor ensures constant output temperature.Minimum water pressure:15 psi
• STABILITY & CONTROL: External temperature control knob & superior temperature stability and control
• GREAT EFFICIENCY: 97% thermal efficiency with minimal stand-by loss

User questions & answers

Question:	how many gallons is this
Answer:	It's not gallons doesn't hold water it heats it as it flows
Question:	can hot water go in cold feed side. my house heater heats my water but runs out after a minute
Answer:	No, The Bosch Tronic 6000C WH27 is a whole house electric tankless and you would not need to feed it preheated water. If you want to do that then you would want to go with one of the mini tank heaters like the Bosch Tronic 3000T ES4. Globaltowne is an Authorized Bosch Distributor.
Question:	I am replacing a powerstar bosch ae115. is the 17.2kw of this make/model, which is shown as a replacement for the ae115, easily swapped out
Answer:	Not sure I understand the question. The units should have the same power and water connections. Should only take a few minutes to swap.
Question:	Dimensions in inches
Answer:	The Bosch Tronic 6000C WH27 is 12.5 H x 15.25 W x 4.5 D. Globaltowne is an Authorized Bosch Distributor.

Product features

Bosch Tronic 6000 C

The electric whole house tankless water heaters can be installed virtually anywhere inside the home. These heaters don’t hold water to heat in a storage tank, making them a great space saving option. A typical water heater stands alone and requires up to 9 sq ft of space in a house, but this Bosch model is compact, and a professional can wall-mount the unit or even install it outdoors!

Hot Water On-Demand

Using electric power to heat water instantaneously, these tankless options provide hot water for 1-3 major applications at a time – you never have to worry about running out of hot water, even during peak use

Quality for Long-life

While traditional tank heaters can corrode and typically last 6-12 years, a Bosch tankless water heater can have an average life expectancy of 20+ years

You Control the Heat

Tronic Series water heaters are equipped with an electronic flow sensor and element modulation to control a consistent output temperature – new scale prevention technology lets you monitor temperature stability and control

Why Bosch Whole House?

Traditional water heaters lose, on average, about 20% of their heat up the flue and through the sidewalls, and to keep stored water hot, they must continuously cycle on and off, whether you are using hot water or not, making them costly as well as inefficient. A better solution for your hot water needs is the Bosch Tronic 6000 C Whole House Tankless Water Heater, which heats water instantaneously when you need it. These heaters are excellent for smaller dwellings where a traditional heater would take up too much space and use too much energy, such as office suites, garage apartments, and smaller homes. Bosch Tronic whole house electric water heaters work by means of a high-tech flow transducer with durable polymer encased elements. A professional must install the 6000 C model and the water lines must be copper or suitably rated stainless steel. Because the water heats up on-demand, plastic or PEX type plumbing line materials are not suitable for connecting directly to the water heater.

Product description

The Ariston 6-gallon point-of-use electric mini-tank water heater eliminates the wait time for hot water to come from one or two sink faucets. You can install the heater independently or in-line with a larger water-heating source. You need no hard wiring to power your unit; simply plug it into any standard outlet and this heater's ready to go. The glass-lined tank ensures long life, and the superior insulation provides quick recovery and greater energy efficiency. This 120-volt, 1500-watt water heater weighs 30 pounds and measures 14.5 x 17.5 x 17.5 inches. Ariston backs its heater with a manufacturer's 6-year limited warranty for the heat exchanger and a 1-year limited warranty for parts.

From the Manufacturer

Installing an Ariston electric mini-tank water heater under the sink puts hot water right where you need it at the point-of-use. Lightweight and compact this heater is available in three space-saving sizes: 2.5, 4, and 6+ gallons. These heaters are aesthetic on the outside, glass-lined on the inside, and offer superior insulation for higher efficiency.

Manufacturer Contact Information

800-283-3787

• Keeps 7 gallons of hot water ready to go and draws only 12.5AMPS
• Must be hardwired into 120V
• Can be installed under the sink, on the floor or mounted on the wall
• A Pressure relief valve is included
• Ariston GL6+S replaces the Ariston GL6+, but the GL6+S does not come with a power cord while the GL6+ did

User questions & answers

Question:	Can you put a power cord on this instead of hard wiring it
Answer:	Yes it is flexable
Question:	What is the size of the inlet and outlet for the watere supplies
Answer:	No, because the suction is very secure and stays in place.
Question:	Can this be installed not under the kitchen sink but in a separate kitchen cabinet which is nearby ? There is just not enough space under the sink
Answer:	You could try a putty knife, but basically you're asking how to unglue glue. Shop around for another sticker.
Question:	how many minutes hot water ready 7 gallons heater
Answer:	I followed the simple directions and I need simple directions stuck to my shower wall in a flat area still there seems really solid
Question:	Will it automatically turn off when the hot water from my water heater gets to it
Answer:	I wouldn’t adhere the holder with grout lines underneath. It should either be very smooth tile large enuf to fit the holder with no grout lines underneath. My tiles were not smooth so I didn’t take a chance putting the holder there. What I did was attach it to the shower glass door. I measured where it should be prior to attaching. It is up now for close to 2 months. I have had no problems.
Question:	The red led heater light is on dim all of the time, what do i need to do to turn this off
Answer:	If it's a regular sized one it should fit with no issues.
Question:	Why can't it accept hot water? Same as setting up two heaters in series. This can continue filling our jet tub when the main runs out of hot water
Answer:	It comes attached to the adhesive so I am going to say No.
Question:	Can this water heater be used at voltage of 220V
Answer:	Mine did not fit with this holder. There are so many sizes of hoses making it difficult to know for sure. I ended up finding a Command Strip holder for a broom and that did the trick. I hope this will be helpful.

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

The Bosch Tronic 3000T point-of-use electric mini-tanks are available in three sizes which can be wall-hung (bracket included) or floor-mounted. Simply tap into the cold water line and install the water heater directly at the sink to provide hot water. They may also be installed in-line with a larger hot water source to eliminate the wait for hot water. NOTE: This model must be hardwired.

From the Manufacturer

The Bosch Tronic 3000T point-of-use electric mini-tanks are available in three sizes which can be wall-hung (bracket included) or floor-mounted. Simply tap into the cold water line and install the water heater directly at the sink to provide hot water. They may also be installed in-line with a larger hot water source to eliminate the wait for hot water. NOTE: This model must be hardwired.

• Provides hot water quickly at point-of-use
• Units can be wall/floor mounted
• Temperature/pressure relief valve
• Glass-lined tank for long service life
• 120VAC hard wired connection (1440-watt), 3/4" male NPT connection

User questions & answers

Question:	Does this heater have a drain
Answer:	No, The Bosch ES8 has no real drain on it and would have to be disconnected and drained that way. GlobalTowne is an authorized Bosch distributor.
Question:	how long does it take to heat the water after heated water had been exhuasted from the tank
Answer:	Hi Duane, A fully exhausted tank that is refilled with city tap water takes about 30 minutes to reheat to the nominal temperature setting. I use this tank as a buffer for a tankless water heater. You can read about my install at DavidBonal.com and scroll to the bottom of the page and click on Interests. This is a great water heater but if you want it be an instant heater, this isn't the one for you.
Question:	Can this be used to replace an ariston gl 8ti (https://www.amazon.com/gl8ti-7-gallon-ariston-electric-mini-tank/dp/b0046vknv
Answer:	Yes, The ES8 replaces the older GL8Ti. Please be aware the new ES8 does not come with a power cord so you will have to get one or use the one from the older GL8Ti. GlobalTowne is an authorized Bosch distributor.
Question:	can it be used in sync with gas water heater in an rv for shower
Answer:	The Bosch ES8 heats water very well for its size, and would probably work fine if plumbed and wired correctly. Draining it for winter storage might be difficult. It can be mounted two ways, but whether one way provides a drain port is in question.

Product description

The compact and powerful WH27 & WH17 electric tankless water heaters can be installed virtually anywhere for commercial or residential applications. Advantages include 97 % efficiency with minimal stand-by loss and a built-in flow sensor to ensure a constant output temperature to deliver endless hot water for 1 major application at a time.

From the Manufacturer

The compact and powerful WH27 & WH17 electric tankless water heaters can be installed virtually anywhere for commercial or residential applications. Advantages include 97 % efficiency with minimal stand-by loss and a built-in flow sensor to ensure a constant output temperature to deliver endless hot water for 1 major application at a time.

• Max 3.3 GPM at 55 degree temp rise
• Provides endless hot water for 1 major application at a time
• 97 % efficiency rating
• Element modulation provides a constant output temperature
• Enhanced scale resistance

User questions & answers

Question:	How many heating modules or elements does this unit have
Answer:	Hi! Thank you so much for interesting in our Shower Bracket. The distance between screw holes is 1.69"/43mm
Question:	can the unit be mounted outdoors
Answer:	If you need to adjust the angle, you need to loosen the connecting screw. Otherwise it won't move
Question:	will this service the whole house. Two baths, kitchen and washing machine
Answer:	Hello, the shower head holder is compatible with most showerheads, and you can easily hang or take off the shower wand.
Question:	Can I replace 115 unit with this unit without new wire&upgrad
Answer:	Hello, There are two installation methods for the shower head holder. For example, ceramic tiles, glass, smooth wood, smooth metal surfaces, etc., you can use nail-free glue to install the universal shower head holder; other non-smooth surfaces, such as rough wood, latex paint, textured tiles, etc., you can use screws to perforate and install.