Best Electric Tankless Water Heater

Do you want to have a water heater that does not require too much maintenance? Then you must look for the best electric tankless water heater.

Aside from only having to clean it about once a year, it is also easy to install, requires less space, and more energy-efficient than a conventional water heater.

Electric Tankless Water Heater Reviews

Tempra 29 Plus Electric Tankless Water Heater

The Tempra 29 Plus Electric Tankless Water Heater by Stiebel Eltron can serve an entire house’s needs with its heavy-duty electronics and single-flow sensor design. No venting is required. With its sleek design and digital controls, the heater can fit anywhere.

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Eccotemp L5 Portable Tankless Water Heater and Outdoor Shower

The L5 Portable Tankless Water Heater and Outdoor Shower by Eccotemp Systems is a battery-operated heater that requires 20-80 PSI water pressure. It’s easy to operate as it includes adapters and fittings. It can be used in cabins and campsites.

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Ecosmart ECO 27 Electric Tankless Water Heater

The ECO 27 Electric Tankless Water Heater by EcoSmart is a 27KW heater for areas where water temperatures can dip to 37°F. Its metal parts are designed for durability and easy replacement. Homes with large tubs can use the heater.

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TITAN SCR2 N120 Electric Tankless Water Heater

The SCR2 N120 Electric Tankless Water Heater by Titan heats water when you need it. It can substitute a tank heater without disrupting your hot water needs. The unit can be for areas where temperatures are above 65°F.

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Stiebel Eltron DHC 6-2 Electric Tankless Water Heater (240V)

The DHC 6-2 Electric Tankless Water Heater (240V) by Stiebel Eltron heats water instantly. The heating elements are controlled to keep water at safe temperatures. You use up to 50% less energy as compared to using storage-type heaters.

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Eccotemp L10 Portable Outdoor Tankless Water Heater

The L10 Portable Outdoor Tankless Water Heater by Eccotemp Systems comes with a battery igniter, a rain cap (stainless steel), and an adapter for a garden hose. The unit features a 20 min. safety shutoff timer (automatic). It can supply hot water to your cottage, potting sheds, campers, and RVs.

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Rinnai RL94iN Natural Gas Tankless Water Heater

The RL94iN Natural Gas Tankless Water Heater by Rinnai heats up to 9.4 gallons a minute. It comes with a built-in program that cycles a pump at pre-set temperatures and intervals to maximize comfort and efficiency. It can be used in mobile homes.

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Rheem RTE 13 Electric Tankless Water Heater (4 GPM)

The RTE 13 Electric Tankless Water Heater (4 GPM) by Rheem features standby mode, LEDs that indicate activity, and temperature control. It can be used for single showers. The unit can be used in homes, condos, apartments, and many others.

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Atmor AT900-13 Point-of-Use Tankless Electric Instant Water Heater

The AT900-13 Point-of-Use Tankless Electric Instant Water Heater by Atmor can be a convenient and eco-friendly way to heat water. It instantly delivers hot water only when you need it. The unit can heat an entire bathroom’s water supply.

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BOSCH Tronic 3000 Electric Tankless Water Heater

The Tronic 3000 Electric Tankless Water Heater by Bosch Thermotechnology is a 7.2KW unit that instantly heats water through a copper heat exchanger (dual-chambered). The compact unit can be mounted on the wall. You can use the heater at home.

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How Electric Tankless Water Heaters Work

As the name implies, an electric tankless water heater runs on electricity to deliver hot water on demand. It does not require installing a tank as conventional water heaters do.

Instead of holding hot water in a tank, a tankless system circulates it via a series of electric coils or burners that heat up the water as it runs through the appliance or faucet.

Since the tankless heater does not store water, it seldom runs out of it. However, if the flow rate demanded during a specific time is beyond its heating capacity, you may experience hot water shortage.

As such, it is important to get one with the right size and capacity. The number of devices you will be running the hot water on is one of the major factors to consider.

The capacity of tankless heaters is rated by how many degrees it can raise water temperature at a given rate of water flow. It is usually expressed in GPM (gallons per minute).

Because of the response time and heat output required, electric tankless systems are more suitable for small, single-fixture units. Gas-fired heaters (kerosene or propane) are typically used for whole-house units.

How to Select the Correct Size Tankless Water Heater

Tankless water heaters are typically rated by the greatest temperature rise it can possibly stand at a specific flow rate. To properly size the water heater, define the temperature rise and flow rate required for its application first.

Decide on how many devices you wish to run and determine their flow rate (GPM) in total. The sum of the flow rates is the rate you will need.

To determine the needed temperature rise, subtract the temperature of incoming water from the output temperature you want. For most applications, water is heated to roughly 105-115 degrees.

Here is a sizing example – standard showers are between 104-106 degrees and use 2.6 gal. of water. Assume that the incoming water temperature is 40 degrees and you want to generate enough hot water for 2 running showers.

To get the temperature rise required for the above situation, increase the incoming temperature from 40 to 105 degrees. Since you’ll be running 2 devices, you need to heat up at least 5.2 gal. of water.

Therefore, you need an electric tankless water heater, which can generate at least a 60-degree temperature rise at 5.2 gallons of water per minute. In any case, do not undersize the heater just to save money.

How to Select a Tankless Water Heater

When choosing an electric tankless water heater, check the features it contains and ensure they suit needs. Here are the most important features to consider:

Single Use or Whole-Home – If you wish to supply hot water to your entire home, you need a tankless heater that can hold large water capacity. To supply water to a single part of the house, a smaller heater is preferable.

Heater Capacity – Depending on your chosen model, the heater can generate 2.5 to 11 gallons of hot water per minute. Determine how many water sources you’re likely to use at once, and get a correct size for that purpose.

Brands and Price – The best electric tankless water heaters aren’t cheap, but they give you significant savings over time. The brand you choose also matters. Read consumer reviews to learn which one offers the best products.

Consider Outdoor – In some cases, having an outdoor model of a tankless heater may be a better idea. It does not require venting and saves you cash on installation. It’s also ideal if you plan to use it for hot spa/tub or pools.

Before buying an electric tankless heater, assess your needs first, compare models and consider your budget. Doing so will let you personalize a plan, which delivers continuous flow of hot water whenever needed.

Advantages of Having a Tankless Water Heater

Tankless water heaters are becoming increasingly popular among consumers, and there are many good reasons behind it. Compared to conventional ones, tankless type offers more advantages:

Compact – They are smaller, thus do not require as much space as a tank heater. While a 50-gallon tank requires a space of about 5 x 2ft, a tankless heater takes only about the size of a large personal computer.

Low Maintenance & Extended Warranty – Tankless heaters typically require minimal maintenance. Since they are considered new technology, they often come with a warranty that can extend up to 20 years.

No Heat Loss – In tank heaters, hot water just stands idly and waits for someone to use it. This causes loss of heat, thereby needing continuous reheating. With tankless heaters, you can save energy by 21-34% since reheating is unnecessary.

On-Demand Convenience – Tankless heaters give you hot water at your own command. It can produce 2-3 gallons of heated water per minute. With a tank, you need to wait several minutes for the water to heat up.

Energy Savings – Although tankless systems cost more upfront for purchase and installation, they offer substantial operational and energy savings in the long run. It is because they generate hot water only when needed.