Top 10 best tankless water heater for 2020 with review

Top 10 best tankless water heater review :

Tankless electric water heaters can produce hot waters instantly, i.e. you can have hot waters constantly. One thing you should keep in mind that not all tankless water heater can’t deliver the same amount of output. Means, the output speed will depend on the incoming water temperature and also on the power of the heater. Similarly, not all are capable of delivery to more than one sink at the same time. So, always check the instruction manual before.

How tankless water heater works? Mainly two different types of water heaters available: electric and gas powered. When you will open the hot water tap, the cold water will start flowing through the heater, it will heat up the water instantly and pass it to the tap. That’s it. The water heater will be turned off when the water will stop flowing and that will save you a lot of money on electricity.

The cost of a tankless water heater is more than a conventional water heater, but tankless water heater will last more and also you don’t have many things that need replacements. No heating rods, that is one of the main plus points. Heating rods cause hard water formation and also corrosion. Most tankless water heaters last for more than 20 years.

Lots of different water heaters are available: for a single sink, for multiple sinks, designed for kitchen or a portable heater etc. To make this thing easier for you, we have compiled one list of top 10 best tankless electric water heaters currently available on the market. Let’s have a look :

10. Marey ECO110 220V Self-Modulating 11 kW, 3.0 GPM Multiple Points of Use Tankless Electric Water Heater :

ECO110 is a German designed stainless steel tankless Electric water heater. It comes with a patented corrosion-resistant heating element that also helps with minimizing the hard water formation. It is an environment-friendly water heater that uses up to 60% less energy. It has one LCD screen that shows you the current temperature. It provides 28°F increase at 3.0 GPM, that allows you to use it as a shower or as a sink simultaneously.

This is an ETL approved product and works best in the US southern region where the incoming water temperature is more than 70 degrees F.

Features :

  1. Use it as a shower or as a sink.
  2. Stainless steel construction.
  3. LCD panel to show the temperature.
  4. ETL approved.

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9. Rheem RTEX-13 240V Heating Chamber Residential Tankless Water Heater:

RTEX-13 is a compact and stylish tankless water heater from Rheem. With robust copper immersion, heating element and brass top increases the durability of the product and makes it easy to replace. It comes with a digital temperature display and one external control to adjust the temperature. You can change the temperature from 80°F to 140°F with 1°F increment level.

The display can show setpoint temperature in Celsius or Fahrenheit temperature scales. It comes with one 3 foot electric cable, 1/2 NPT adapter and 1/2 inch compression water connectors on the side.

Features :

  1. Compact design.
  2. 80°F to 140°F with 1°F increment level.
  3. Digital temperature display.
  4. 3-foot electric cable.

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8. 240V 5.5KW 3 Power Levels Instant Electric Hot Tankless Water Heater + Shower Head :

This one is a small sized 12 x 5 x 3-inch mini tankless water heater comes with one shower head. It is best for kitchen and bathrooms. It comes with 3 different power levels (5.5KW 4.5KW 3.5KW) and for each power level, you will get 10 different power settings. On the front, it has one LCD screen that shows the temperature. Also, it has few touch buttons to change the temperature and turn it on/off. You can change the temperature with a one-degree difference.

This is a 240V heater and it comes with one water flow control valve, one host, one shower head holder and one shower head.

Features :

  1. Small sized.
  2. Comes with one shower head.
  3. Three different power levels and 10 different power settings for each.
  4. LC display and touch control.

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7. Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater :

Ecosmart POU 3.5 is a 3.5kW electric tankless water heater for single sink use. You can place it in bathroom, kitchen, in your RV, in your boat or anywhere you want. It can handle a maximum flow rate of 0.5 gallons per minute. It is a flow controlled heater i.e. the temperature will be adjusted automatically as per the flow rate. It is a compact and small-sized water heater that will fit under a sink easily.

It is not for a temperature less than 57°F. At 57°F, it can heat up to 105°F at 0.5 gallons per minute water speed.

Features :

  1. Single sink tankless water heater.
  2. Small and compact sized.
  3. The temperature automatically adjusted to the flow speed.
  4. Ideal for outside temperature more than 57°F.

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6. Camplux AY132 5L 1.32 GPM Outdoor Portable Propane Tankless Water Heater :

AY132 is a portable tankless water heater, best for camping, family vacation or any other outdoor activities. It is also suitable for indoor use as well. It comes with a handle that can be used to hang it on anywhere you want. Easy to setup: install or hang it somewhere, connect the gas cylinder, connect the shower hose to the hot water outlet, connect water inlet with a water supply, connect to a power source and it will start producing hot water. All these hose and connectors are included in the package.

The ignition can be started using even 2 “D” batteries. Camplux AY132 works with 2.5 to 110PSI water pressure and the temperature range is within 46.4℉ to 114.8℉ for 1.32 gallon per minute (GPM) hot water.

Features :

  1. Indoor or outdoor use.
  2. Works with or without electricity. 2 “D” batteries are required.
  3. 46.4℉ to 114.8℉ for 1.32GPM hot water.
  4. Works with low water pressure from 2.5 to 110PSI.

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5. SioGreen IR260 POU 220v/10A-30A/1.5kW-6kW Infrared Electric Hot Tankless Water Heater :

SioGreen IR260 Point Of Use tankless water heater utilizes Quartz Infrared Heating elements to heat water instantly. Unlike traditional water heaters, that uses metallic bars to heat water, IR260’s unique infrared technology uses heating elements that don’t even come into contact with the water. That means your water will be free of corroding metals, no hard water deposit and fewer chances of bacteria and other unwanted items forming. This heater is maintenance free and you can clean it by yourself.

It will save you a lot of money because you don’t need to replace any parts and it will reduce the monthly electricity consumption up to 60%. It has four different power options: from 10 to 30 amps, 1.5kW to 6.0kw. It has one LCD screen that will show you the current temperature level.

Features :

  1. Uses quartz infrared heating elements.
  2. No corrosion, no hard water deposit.
  3. No part to replace, environment-friendly.
  4. LCD screen to show the current temperature.

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4. Atmor AT-910-24TP ThermoPro 24 kW / 240V 4.6 GPM Digital Thermostatic Tankless Electric Instant Water Heater :

Atmor Thermopro Thermostatic tankless electric instant water heater comes with a self-modulating system that can provide you unlimited hot water whenever you need. It automatically got activated whenever the water flow starts and stops it when the water flow ends and thus it will save you a lot on the electricity bill. It can handle up to 4 applications at the same time for example 2 shower, 1 at the kitchen and 1 bathroom sink, if we consider the normal water temperature is 73 degrees F with flow rate 1.5 gpm,1 gpm and 0.5 gpm respectively.

It can handle water up to 37-degree Fahrenheit at 2.45 gpm. On the front, it has one temperature adjustable knob and LCD display to show the current temperature. The temperature can be changed at a range of 1-degree Fahrenheit.

Features :

  1. Eco-friendly, energy efficient product.
  2. IP54 certified.
  3. LCD display with 1 degree Fahrenheit temperature adjustable knob.
  4. Lightweight and small in size.

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3. Thermoflow Elex 24 Electric Tankless Water Heater :

Thermoflow Elex24 tankless water heaters can save you at least 15-20% of energy as compared to other electric tank water heaters. Compact in design, it will fit easily in any place. It has an activation flow of 0.6 GPM. The temperature is adjustable in the range 32°F to 165°F. You can change it at a 1-degree interval. One small rounded LCD screen is on the front to show the current temperature. The controls are smart touch screen controls that let you change the temperature with a simple touch.

Tankless water heaters are electric and venting is not required, so you can install it on anywhere. It is an environment-friendly product, the CO2 emission is lower up to 35% as compared to other heaters.

Features :

  1. Energy efficient.
  2. 32°F to 165°F range with a 1-degree interval.
  3. LCD display, touch controls.
  4. Compact in design and environment-friendly.

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2. Bosch electric tankless water heater (3000 series) :

Bosche electric 3000 series tankless water heaters are comes in four different models with different GPM output namely US3, US7, US9 and US12.US3 is 120V heater and other three are 208-240V. The weight and size of each four are same: weight is 5 lb and the size is 6.5” x 12.25” x 3”. As its size is small and compact, you can install it under the kitchen sink or under the bathroom sink. It can be mounted vertically or horizontally except for the US12 model. Since the water is heated instantly, it will not cause any standby energy loss and also no pressure valve or relief valve is needed.

Tronic 3000 is a single unit tankless water heater. It is an under sink water heater with thermostatic control for handling the temperature output.

Features :

  1. Undersink single unit tankless water heater.
  2. Lightweight and small sized.
  3. Mount vertically or horizontally(not all models).
  4. Energy efficient, thermostatic temperature controller.

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1. EcoSmart ECO 27 Electric Tankless Water Heater :

Ecosmart ECO 27 is a large tankless water heater designed for a family home. ECO27 can handle 3GPM even at low temperature like 37°F. It can provide hot water continuously up to two showers at the same time at this temperature. At warm weather, it can handle four showers and a sink simultaneously. Made from copper and stainless steel, its components are easily replaceable.EcoSmart ECO27 starts automatically only when you need water, i.e. it will save you a lot on the electricity bill.

The temperature can be changed within the range 80°F - 140°F. One digital temperature knob is on the front for changing the temperature at 1°F interval. One LCD screen is also on top of the knob that shows you the current temperature.

Features :

  1. Large in size.
  2. It can handle multiple showers and sinks at the same time.
  3. Temperature range is in 80°F - 140°F.
  4. Digital temperature knob with temperature changing interval 1°F with one LCD screen.

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