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Our Top Picks:

Best Overall: Buy: Bosch Rmotechnology Only Water Heater READ REVIEW

Best With Furnace: Buy: Ecosmart Only Water Heater READ REVIEW

Best For Small Place: Buy: Ariston Only Water Heater READ REVIEW

Best For Worth The Money: Buy: Rinnai Only Water Heater READ REVIEW

Best For Space Saving: Buy: Rheem Only Water Heater READ REVIEW

Best For Premium Quality: Buy: Ecotouch Only Water Heater READ REVIEW

Best For Stainless Steel: Buy: Camplux Enjoy Outdoor Life Only Water Heater READ REVIEW

Best For Low Water Pressure: Buy: Recpro Only Water Heater READ REVIEW

Best For High Performance: Buy: Memoryee Only Water Heater READ REVIEW

Best For Whole House: Buy: Excel Only Water Heater READ REVIEW

Best For Flow Rate: Buy: Airreal Only Water Heater READ REVIEW

Best For Ease Of Installation: Buy: Funwill Only Water Heater READ REVIEW

Best Overall: Bosch Rmotechnology Only Water Heater

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Compared with other heaters in this category, the Bosch Rmotechnology Only Water Heater has a design with broader appeal. The bosch rmotechnology only water heater is great for a wide range of locations. Make sure this fits by entering your model number. This electric water heater is easy to maintain and has premium glass - lined material for a long service life.

The heater makes for a great buy, heats up quickly, it is good for straight - forward installation and has a practical design. Lastly, the bosch rmotechnology only water heater is easy to follow, It is easy to mount and has a unique design.

Most customers agree that the heater is quite large and box shaped, so be sure to also know where it's going. Further, a few strongly agree that the heater comes out really hot at default settings. Moreover, a few also found that the heater is easy to install, plugs into a standard outlet and heats up fast. Consequently, customers were very happy to recommend it to friends and families.

• This works well as hot water assist.
• This works wonderfully for providing instant hot water in front of a tankless water heater.
• This can be very hot, but works well.
• This is easy to install even for a guy with this limited knowledge.

Best With Furnace: Ecosmart Only Water Heater

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The Ecosmart Only Water Heater has killer features for the price point. The ecosmart only water heater is highly recommend, is very good. It is great for good quality and has considered design. And when you want to eliminate the wait for hot water but need more volume, install the eco smart heater in-line with a larger hot water source, such as a tankless heater or a storage tank heater. Also, the heater is plenty hot, it is affordable and has a sleek design.

The heater is very nice, It is stainless steel and has a safe design. In addition, it is designed for water inlet,s super fast, it is commercial and has smart design. Most importantly, the ecosmart only water heater is perfect for camping, It is surprisingly useful and has a water heater design.

Almost all customers quickly discovered that the heater would take up room, but using 90 deg elbows, the limiting height is actually the t&p valve. In addition, they also found that the heater had worked well for the purpose. Moreover, they say that the heating time for this heater is 37 minutes to heat the water in the tank by 60f.

• This will work unlike this type.
• It takes a bit of time for warm/hot water to flow to the kitchen faucet.
• The big heater catches up is at the far end of the house.
• This is great for about 7.5 months.

Best For Small Place: Ariston Only Water Heater

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The Ariston Only Water Heater has killer features for the price point. The ariston only water heater is very happy, is working great, It comes with thanks for the advice and has a water heater design. Make sure this fits by entering your model number. And, it looks great, It looks good and has a cool design.

The heater protects the inner surface against corrosion. Moreover, it works for home improvement, it is priced right and has been considered design. Above all, the ariston only water heater is great for energy efficiency, is very good, it works fine and has an efficient design.

Almost all buyers quickly discovered that the heater is easy to set up and it gets the water very hot. Further, they strongly agree that the heater is perfect for 18 years. Also, they strongly agree that the distance the heater is installed from the faucet will govern how much water is needed to run before hot water from the heater reaches the faucet.

• This has a thermostat that heats only when the water falls below the set temperature.
• This comes with a 6 year warranty, that is definitely a plus.
• This is a pretty sized washer.
• This provides great value, It never runs out and has a floating design.

Best For Worth The Money: Rinnai Only Water Heater

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The Rinnai Only Water Heater's material feels more premium than its price would suggest. The Rinnai only water heater is suitable for high pressure, is great for small unit,s It never runs out and has a compact design. Rinnai's high-efficiency outdoor tankless water heater models offer the most advanced technology with comfort and value. This v94ep compact tankless water heater has a longer lifespan since water is heated on demand only, which saves on energy costs.

The heater is used for the washing machine, is very happy, It is for domestic hot water and has a sleek design. Lastly, the rinnai only water heater is really easy, It is great for low temperatures and has been considered design.

Most customers quickly discovered that the heater is good for 1 fixture and two if they aren't high volume fixtures. In addition, a few say that the heater comes with the standard controller that heats water to 120 degrees fahrenheit. And, a few strongly agree that this water heater works great, exactly as advertised so far. In conclusion, the tone of buyers is very positive and we believe that the heater suits the purpose.

• This makes maintenance easier.
• This provides unlimited hot water.
• These make the installation much easier.
• This has minimum water pressure, it is designed for maximum output and has a controller design.

Best For Space Saving: Rheem Only Water Heater

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The Rheem Only Water Heater is suitable and reliable and fits well with your daily use. The rheem only water heater is popular for cabins, is legible, it looks good and has been considered design. Make sure this fits by entering your model number. In addition, it is made for simple installation, It is great for space saving and has a compact design.

The heater works great, it is super small and has a safe design. Moreover, this is residential, works well for small unit,sssss It provides for ease of installation and has a unique design. Finally, the rheem only water heater is designed for high flow rates, is great for hot water output, It works with tankless heaters and has a water heater design.

Most customers quickly discovered that the heater is easy to read lcd temp. And, a few say that the heater includes a cardboard pattern which shows where the screws go in relation to the water hookups. Further, they strongly agree that the heater is capable of ( check sizing charts ), then it will produce that set temp.

• This has worked like a champ.
• This will work, but 20amp breakers will get pretty warm during use.
• This is a tankless water heater, so no water is ever stored.
• Durable copper immersion two heating elements, field serviceable.self-modulating power control.

Best For Premium Quality: Ecotouch Only Water Heater

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Compared with other heaters in this category, the Ecotouch Only Water Heater has a design with broader appeal. In addition, the ecotouch only water heater provides instant & endless hot water with optimal thermal efficiency of 98% and minimum energy cost. Determining specs and electrical infrastructure is important because without the correct infrastructure your unit may not fit onto your breaker panel. The electric water heater supplies instant, consistent and endless hot water of 116 ℉ or higher temp, no waiting for preheat nor terrible temp up & down, perfect companion for sinks. Above all, the ecotouch onlywater heater is available in black, silver and white colors.

Almost all customers agree that the heater will. You may need an adapter to connect the garden hose to the unit. Moreover, a few strongly agree that the heater provides nearly instant heat. In addition, they strongly agree that the heater will provide hot water throughout your home. To sum up, most customers agree that the heater suits them best, and no one questions it.

• The tankless hot waterheater is capable of and being located near by.
• It is easy to install a sink.
• This is used to fill a bathtub.
• This is ideal for big power, it is for washing machine and has an efficient design.

Best For Stainless Steel: Camplux Enjoy Outdoor Life Only Water Heater

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The best part: people enjoy outdoor life. only water heater costs comparatively little and it is available to ship in 24 hours. The Camplux enjoys outdoor life. Only a water heater is made for output power and it enjoys outdoor life. . In addition, this is good for electronic ignition, matched with good customer service and it is built with cheap parts.

Above all, the camplux enjoy outdoor life. only the water heater is black, sets the water temperature and it is very happy.

Most buyers agree that the heater is made for indoor use with an exhaust pipe leading to the outdoors which is not likely to be weather resistant. In addition, they strongly agree that the heater is probably a reference to how much power it likely uses in a year, which is not very much. Moreover, they also found that the heater and corresponding lpg fuel source will remain in the " ready " position but not operate. In short, many customers have used the camplux enjoy outdoor life with only a water heater for more than a few months without any complaints, and it shows no sign of giving up.

• This is used for drinking water, only for showers and sinks only.
• This is not equipped as well as a professional installation.
• It takes 30seconds to fill. Then you have a 2 gallon per minute flow rate.
• This allows the unit's heat exchanger to cool down.

Best For Low Water Pressure: Recpro Only Water Heater

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The Recpro Only Water Heater is satisfactory and appropriate and fits well with your daily use. And, the recpro only water heater is great for good quality and it is soft. Make sure this fits by entering your model number. Further, the heater is also a dust net to make sure no dirt gets into the tankless water heater. Above all, the recpro only water heater is available in 2 attractive colors: black and white.

Almost all buyers quickly discovered that the heater is designed for an rv and works really well for that aspect. Also, a few also found that the heater does take a little more water, but rv fill hook ups is all good. Moreover, a few also found that this water heater does not use electricity. It is propane only. To sum up, at the price, they believe that they got a steal of a deal with it.

• This is designed to be on the outside wall of an rv or camper.
• The water heater beats the old 6 gallon tank hands down.
• This can not take a shower and wash dishes at the same time.
• It is fabulous to have unlimited hot water in an rv shower.

Best For High Performance: Memoryee Only Water Heater

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate heater. The Memoryee Only Water Heater is exactly that - it's a simple heater that hits all the right notes. The memory only waterheater is our first priority. to add that it takes about 2 hours to heat 25 gallons of water from 0 °f to 104 °f. All you need to do is just put the heater in to the water then connect the 120v power supply, easy to use. The heater needs to be completely immersed in water in working condition.

Most importantly, the memoryee only water heater comes with a heating element and it is great for stainless steel.

Most customers agree that the heater is made of plastic, rubber, and ceramic materials. Also, they say that the heater is quickly up even for the larger amount of water needed for a bathtub. And, they strongly agree that this heater is 2000 watts. Please check your inverter power.

• This is affordable, is great for wide applications and it is great for superior quality.
• The Manufacturer says: each of our bucket heaters has been strictly tested.
• This is inexpensive, is perfect for high quality and it is built for high performance.
• Runs on a more powerful and energy - saving motor.

Best For Whole House: Excel Only Water Heater

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Not everyone likes to purchase a heater for their regular use, but the best water heater would be an anomoly. The excel - onlywater heater is exclusive, It is best for outdoor use and has a tankless design. Make sure this fits by entering your model number. The excel heater saves energy and water by instantly delivering hot water upon opening the hot water tap.

The heater allows the unit to work at low water pressure, especially those found in rural areas, rv's and boats. Further, the heater works great, It comes with a flow sensor and has an efficient design. Finally, the Excel Only Water Heater is golden, It has used pex and has a compact design.

Almost all customers quickly discovered that the heater is easy to install. Further, a few strongly agree that the heater is ventless so the longer it runs the more exhaust will accumulate in the cabinet. In addition, they strongly agree that the heater is an easy swap with a little modification. In short, many customers have used the heater for more than a few months without any complaints, and it shows no sign of giving up.

• Its unique and beautiful design will lavishly decorate your kitchen or laundry room.
• This is perfect for a tiny house.
• Starts with only 2 psi of water pressure - amazon exclusive.
• This has a safety device that shuts the unit off after 20 mins.

Best For Flow Rate: Airreal Only Water Heater

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If you want nothing less than the best suitable heater, then the only water heater is the one you should definitely consider. The air only water heater is easy to follow, It is perfect for electrical connections and has an efficient design. . Also, the heater is perfect for wire size, it is very happy and has a cool design.

Above all, the air only water heater has a lcd display, It is used for plumbing connections and has a tankless design.

Most customers find that the heater will tell you how to reset it....or call their company, they should help. Also, a few strongly agree that the heater is the absolute minimum for a 1 - bathroom house. In short, for most customers, Airreal product was just what they wanted.

• This is perfect for a sink in this cold weather.
• This can work with a shower, sink and water.
• This is 12kw and 54 amps, providing a 53 degree rise @ 1.85 gpm.
• It has good instructions to follow.

Best For Ease Of Installation: Funwill Only Water Heater

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The funwill - only water heater is suitable and reliable and fits well with your daily use. The funwill - only water heater is great for energy saving, works amazing and it has a firm structure. Are you still looking for a water heater that can be installed easily, heated quickly, and can enjoy shower time. Also, the heater is very nice and it is fashionable.

Most importantly, the Funwill Only Water Heater suitable for special purpose sewage outfalls and it is good for fast delivery.

Almost all buyers quickly discovered that the heater is great for a 1 - room apartment. In addition, a few say that the heater is easy to operate and clear state packing list.

• 【Full automatic control】- automatically adding cold water, automatically heating and automatic temperature control.
• This can lay sideways in a cabinet.
• Funwill 13gallon electric hot water heater is a great choice.
• This is mounted at sewage outfalls to facilitate checking and replacing anode protection materials.