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🥇 Best Electric Tankless Water Heater Reviews —Top 11 Models, Buying Guide & FAQs

The importance of a water heater cannot be overstated, more so if you’re living in cold weather conditions for most of the year. Be it taking a bath or washing dishes, you need hot water round the clock for various needs. And, what better way to have it than buying a best-quality electric tankless water heater for your home?

Electric tankless water heaters have, by and large, been considered a wise investment to make if you’re looking to get hot water supply while reaping benefits such as energy savings and easy installation. Their environmental sustainability is a part of the package, and the fact that you’re required to pay cheaper up-front costs to buy one is the icing on the cake.

Most users have switched from traditional water heaters to embrace the electronic ones, and if you’re tempted to buy one for yourself, our guide on best electric tankless water heater reviews comes into play.

Just as you know, not every tankless electric water heater can live up to your expectations. Every model is engineered differently and has its own share of pros and cons. Some may contribute more money to your savings while some may get easily tucked away under a sink for their compact sizes.

So, no matter how much you’re prompted to rush in and experiment with your hard-earned money, it’s always smart to weigh in your options and make a well-thought-out decision.

To help you find the best and the most fitting electric tankless hot water heater for you, we have rounded up 11 top-rated models available in the market today and compared them on the basis of their GPM rates, energy-efficiency, choice of technology, and ease of installation. So, without further ado, let’s get down to the bible right away.

Preview
Editor's Choice
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Inbuilt Pressure Relief Valve
Stiebel Eltron Tempra Plus 36 kW, tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control
Best for Draining
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
Title
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Stiebel Eltron Tempra Plus 36 kW, tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
Ratings
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Reviews
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Price
$457.64
$829.00
$410.24
Prime Benefits
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Editor's Choice
Preview
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Title
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
Ratings
-
Reviews
-
Price
$457.64
Prime Benefits
More Information
Inbuilt Pressure Relief Valve
Preview
Stiebel Eltron Tempra Plus 36 kW, tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control
Title
Stiebel Eltron Tempra Plus 36 kW, tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control
Ratings
-
Reviews
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Price
$829.00
Prime Benefits
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More Information
Best for Draining
Preview
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
Title
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
Ratings
-
Reviews
-
Price
$410.24
Prime Benefits
More Information

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

1. EcoSmart Eco 27

If you’re on a look-out for a water heater that supplies hot water on demand for multiple applications, look no further than EcoSmart Eco 27. Engineered to deliver water at 3-6GPM, EcoSmart Eco 27 is the most powerful electric water heater we’ve come across.

Whether it’s the freezing cold spell of North America or the moderately cold conditions around the South, Eco 27 packs an incredible throughput to effectively cater to a variety of water needs.

Put simply, it can heat up 3 gallons of water per minute, allowing you to use two showers, a dishwasher and a sink simultaneously. In slightly warmer conditions, it can let you use four showers without any hassles.

The single biggest strength of Eco 27 is its patented Self Modulating technology. As implied by the name itself, the technology allows the heater to adjust its internal temperature based on the hot water demands.

Say, you’re living in an area that’s mildly cold, and your hot water requirements are relatively less. Eco 27 will consume less energy than normal to keep running, which will eventually lead to more energy savings and reduced electricity bills.

On the downside, EcoSmart Eco 27 isn’t easy to install. If you’ve no experience with tackling electrical requirements, you will find it difficult to install this unit and be forced to hire professionals. This eventually will add up to your expenses.

EcoSmart Eco 27 in a Nutshell


Specifications

3-6GPM
Powered by patented self-modulating technology
A digital screen for temperature monitoring
Internal components made of copper & stainless steel
No venting required

Pros

Compact in size
Energy-efficient
Highly durable
Easy replacement & lifetime warranty

Cons

Hard to install
Heavy electrical requirements; you might have to upgrade your wiring
Sale
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
  • 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

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

2. Stiebel Eltron Tempra Plus—36KW

Stiebel Eltron’s flagship, the Tempra Plus, is one of the best-rated electric tankless water heaters, offering a heady mix of power, speed, and performance. Featuring a GPM rate of 4.0 and the capability to heat water up to 50F, this unit is a robust machine with best-of-the-breed features thrown in; however, at a very competitive price.

The biggest talking point of Tempra Plus is its advanced flow control, which happens to be a one-of-a-kind offering. Using this feature, you can increase or decrease the amount of flow according to your water requirements. Say, if you don’t need as much water as you need in usual days, you can simply toggle the flow settings to low. This way, you will be able to save energy as well as lower your electricity bills.

Stiebel Eltron’s flagship, the Tempra Plus, is one of the best-rated electric tankless water heaters, offering a heady mix of power, speed, and performance. Featuring a GPM rate of 4.0 and the capability to heat water up to 50F, this unit is a robust machine with best-of-the-breed features thrown in; however, at a very competitive price.

The biggest talking point of Tempra Plus is its advanced flow control, which happens to be a one-of-a-kind offering. Using this feature, you can increase or decrease the amount of flow according to your water requirements. Say, if you don’t need as much water as you need in usual days, you can simply toggle the flow settings to low. This way, you will be able to save energy as well as lower your electricity bills.

Though Stiebel Eltron Tempra Plus is a smart electric water heater, it suffers from its shortcomings. Much as it is powerful, it doesn’t pack the punch to provide hot water to an entire home. It’s only suitable for a small household where it can power a shower and a bathroom sink or a washing machine and a dishwasher.

Stiebel Eltron Tempra Plus in a Nutshell


Specifications

4.0 GPM
Advanced digital temperature control
No venting required

Pros

Reliable
Cost-efficient
Runs 100% silent
No mechanical switches

Cons

Slightly expensive
Non-elegant build

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

3. Rheem RTEX 18

No list on tankless water heaters is complete without the mention of the brand, Rheem, one of the biggest suppliers of water heating units globally. For this list, we have placed our bets on Rheem RTEX-18, which provides premium range of features at a comparatively low rate.

The GPM is more than just adequate, ranging between 4.0 and 4.4 to cater to the versatile needs of a household. However, a lot depends on the temperature of the inlet water. In some real-world tests, RTEX-18 has been found to deliver at a flow rate of 3.5GPM, which is also decent and can power half of the water requirements if not all.

Another feature that may sway you into buying this product is its promise of saving 99.8% energy, which means that not only is it environmentally sustainable, but can also keep your savings run high. Using digital temperature controls, you can set the ideal water temperature according to your needs, which stands as a good opportunity to scale back and save aplenty.

All said and done, Rheem RTEX-18 isn’t a tiny machine that can be tucked away from the plain sight. The design, on the other hand, could have been better. On top of this, some customers have also pointed out that the installation diagrams in the RTEX’s product manual are printed upside down.

For those with little or no knowledge with electrical wirings, installation of RTEX-18 with such skewed diagrams has been a big nuisance.

Rheem RTEX-18 in a Nutshell


Specifications

4.0-4.4 GPM
Self-modulation feature; adjust power to meet hot water demand
Digital temperature display
Thermostatic control with LED display

Pros

Powerful and durable
Simple to install
Best warranty in the business
Easy replacement
Energy-saving

Cons

Larger than most units
Non-elegant build
Doesn’t work in silence, however the sound isn’t really loud
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
  • External digital thermostatic control with LED display (+/1 degree accuracy)
  • Most advanced self-modulation, adjust power to meet hot water demand

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

4. Bosch Electric Tankless Water Heater

Bosch, one of the premium manufacturers of home appliances in Europe, brings the unrivaled promise of German engineering. The brand is globally trusted for its water heaters, which are considered as the most efficient units for year-round hot water requirements.

Its Electric Tankless Water Heater, a fun-size, energy-saving model, is no exception either. This unit is more than just perfect to suit your modest hot water requirements for a home office, a summertime cabin, or a small bedroom. Buyable for less than $200, it’s really good value for money and the most reliable electric heating units you can find.

Good things apart, Bosch electric tankless hot water heater isn’t suitable for large households. It can power a single water inlet at a time; say a sink or a shower. So if you are looking for a unit that efficiently supplies hot water at speed for more than one requirement, look somewhere else because with this Bosch unit, you will be in for disappointment.

Bosch Tankless Electric Water Heater in a Nutshell


Specifications

7.2 kW output tankless electric water heater
Water pressure range of 10-150PSI
5 year warranty
98% energy-efficient with minimal stand-by loss

Pros

Huge power in a small package
Cheap; brings you the biggest bang for your buck
An ideal buy for cabins and cottages
Easy to install
Ultra-compact; lightweight

Cons

Not suitable for large households
Not powerful enough to warm freezing cold incoming water
Emits whir-like sound
Sale

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

5. iHeat Tankless S-14

iHeat Tankless S-14 surpasses every other electric tankless water heater for its multifarious uses. Given its uber-durable stainless steel build, this model is a great choice for people looking for hot water supply at a beachfront property or a yacht, let alone a bathroom or a kitchen.

As far as size and weight are concerned, iHeat Tankless S-14 has a compact size and is fairly lightweight, which means it’s easier to handle and mount on a wall. However, the need for copper piping and adapters for installation could be a slight inconvenience for some.

The adjustable temperature control settings are pegged at a default rate of 32 degrees and can be scaled up to over 150 degrees for unlimited hot water, meaning that this iHeat fares a lot better than others in terms of flexibility.

The waterproof touchpad speaks volumes about its meticulous engineering, making it resistant to rust and corrosion. Plus, it’s designed to ensure 60% on your energy bills.

Speaking of the caveats, we were dismayed by this model’s flow rate, which is a flat 2GPM and doesn’t do justice to the whole package. Some users have also warned of system malfunctions within 6 – 12 months of buying this unit.

iHeat Tankless S-14 in a Nutshell


Specifications

2GPM
Made from bespoke stainless steel, making it resistant to tarnishing and rust
Waterproof interactive touchpad
Saves up to 60% energy

Pros

Durable
Energy-efficient
An ideal buy for cabins and cottagesBest suited for beachfront properties, hospitals, and commercial properties
Warranty includes heating components and leakage

Cons

Low GPM
Longevity issues; several buyers report of malfunctions within 6-12 months of use
iHeat Tankless S-14 240V 59A 14KW Stainless Steel Enclosure 7.2" by 11" by 3" 1/2"CPT 36' AWG#6 Electric Water Heater, 7.5 lb
  • Heat tank less s series electric tank less water heater it’s manufactured in complete stainless Steel boasting an ixp-4 water proof construction
  • Heat tank less s series can also be used in highly sterile applications like commercial kitchens, hospitals, clinics, and even schools where cleanliness is of the highest importance

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

6. Atmor AT-D18TP-AZ Thermopro

Atmor AT-D18TP-AZ Thermopro is what you should buy if you value safety over any other aspect. With IP54 certification, the model has placed a huge emphasis on water-resistance and is ranked the most reliable of all. This means, you can install this unit near sinks or showers without the fear of short circuits.

Besides safety, the Smart Flow Technology is another highlight of the unit. The technology allows constant supply of hot water without leading to a dip in the temperature. Another talking point is Self-Modulating technology, which regulates the energy supply required by the heater to heat water.

Since the amount of energy supplied is exactly what’s required, no units of precious power are wasted away and savings shoot up. However, the only drawback with this Atmor machine is its GPM flow rate. Pegged at 3.7GPM, it isn’t really the fanciest you would find in the market.

Atmor AT-D1BTP-AZ Thermopro in a Nutshell


Pros

Safe to use, easy to install
Splash-proof certification
Energy-efficient

Cons

3.7GPM, which isn’t the best the market has to offer
18kW / 240V Electric Tankless Water Heater, 3.7 GPM, 75 Amps, ThermoPro Series with Digital Thermostatic Control
  • Digital temperature control allows you to set your temperature in increments of 1°. Thermostatic control range from 90-135°f
  • Electricial requirements: 3 x 30a single-phase DP breakers, 3 x 8 AWG wires, 240V. 75 amp total connected load

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

7. Marey ECO180 Electric Water Heater

Let’s start talking about the biggest strength of Marey ECO180—its design. This electric tankless water heater doesn’t have an outer sheet of fabric in its construction, which adds up to its longevity and energy-efficiency. Besides, it features a stainless steel water channel, making it resistant to rust and corrosion.

All in all, Marey ECO180 is a durable, robust, and water-resistant machine that promises a marathon run. What’s more, this unit has a digital panel that displays temperature settings for the owners to monitor. Apart from this, this panel shows whether the heater is consuming energy at a particular time or not, allowing you to optimize the energy use on demand.

On the downside, the customer service provided by Marey is shockingly bad in quality, which means claiming your warranty is going to be a long haul. Moreover, the energy requirements of this heating unit are high, so it’s recommended that you plan out your budget and look into your local standards before bringing this machine home. For more Marey Tankless Water Heater Reviews we have an in-depth article on our site.

Marey ECO180 in a Nutshell


Pros

German-designed with higher-quality stainless steel water channel
Digitally smart
Easy to manage

Cons

Poor customer service
Consumes a lot of energy
Marey ECO180 18kW 4.4 gpm 220V Self-Modulating Multiple Points Tankless Electric Water Heater for The Whole US Territory, Small, Silver
  • The 220V eco 18Kw unit requires (2) 50 amp breakers and must be installed by a professional plumber or electrician to ensure safety and quality
  • German-designed with high quality stainless steel water channel and heating chamber

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

8. EcoSmart ECO36

EcoSmart ECO36 finds a mention on every review list of electric tankless water heaters and rightly so. If you are willing to give price a backseat in favor of a long list of best-of-breed features, this unit is your true north. Bringing an excellent GPM flow rate of 6, Eco36 is overwhelmingly powerful to heat the freezing cold water and supply it constantly for multiple uses at the same time.

And, if you are wondering about the weight of the heater that provides such a good volume of water, don’t worry as the unit measures only 17lbs, making it absolutely easy to manage and quickly install at an area of your choice. Eco36 is energy-efficient because the heater doesn’t consume energy until you demand hot water.

The Self-Modulating technology, on the top of it, optimizes the energy supply as per the need, which in return, improves your savings on electricity bills. Towards the end, it’s important to take note of its lifetime warranty, which is a real crowd-puller and reflects brand’s commitment to quality.

EcoSmart ECO36 in a Nutshell


Pros

Works at 6GPM flow rate; powerful to heat water as chilled as ice
Energy-saving
Works on demand
Sleek and elegant build
Lightweight; easy to install

Cons

Very expensive
Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
  • Sleek and compact design with digital output temperature display
  • ECOSMART tankless water heaters are 99.8-percent energy efficient

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

9. Eemax EEM24018

Eemax EEM24018 heats water at a flow rate of 3.5GPM and looks great doing it. It’s simply the best-looking, one of the most sophisticated water heaters we have come across that doesn’t compromise on functionality. Built to meet the water requirements of a kitchen, a bathroom, a studio, or a mini office seamlessly, this Eemax model is pretty economical to run and reasonably inexpensive.

The fact that it’s powered by Self-Modulating Technology, which regulates the energy output based on the needs, is a testament to its quality. Not only is this heater energy-efficient, but also promises big savings.

Besides, this Eemax heater has a high temperature range that reaches up to 140F, and you can increase the temperature incrementally by 1 degree, which gives you remarkable control. In entirety, Eemax EEM24018 is a real bargain that may entice you to get out and spend again.

Eemax EEM24018 in a Nutshell


Pros

3.5GPM, which is pretty decent for modest requirements
Flexible temperature controls
Energy-efficient
Fuss-free installation

Cons

Unsuitable for large households; you might have to buy more than one to meet requirements
Unit reaches the activation point a little late
Sale
Eemax EEM24018 Electric Tankless Water Heater, Blue
83 Reviews
Eemax EEM24018 Electric Tankless Water Heater, Blue
  • Tankless water heaters provide a continuous Supply of hot water and only heats the water you need, when you need it
  • Instant, consistent and endless hot water

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

10. Ariston GL4S Mini-Tank Heater

If you don’t want to cough up extra dollars for a top-notch experience and have modest hot water requirements, Ariston GL4S seems an ideal choice. Featuring plug-and-play configurations and a lightweight design, this model is inarguably the simplest to use and can be installed anywhere.

The amount of flexibility this Ariston model brings in is something that deserves a moment of appreciation. You can readily connect this heater to your shower for a soothing bath experience on a cold winter night, or to your kitchen sink to do dishwashing with the comfort of hot water.

Given so, you save plumbing costs as you aren’t required to hire a professional to get this heater installed. You can manage doing so all by yourself. Now the best part; this heater has a GPM of 4, which is an above-the-par feature for a model with such a decent price. No wonder, Ariston GL4S is a dream come true for anyone who seeks to get more in return of less.

Ariston GL4S Mini-Tank Water Heater in a Nutshell


Pros

4GPM, which makes it powerful to supply water to a shower and a sink simultaneously
Simple to use with plug-and-play operations
Can be connected directly to faucets
Great value for money
6-year warranty

Cons

No feature for incremental temperature changes
Ariston GL4S Electric Mini-Tank Water Heater
  • Point-of-use 4-gallon mini-tank water heater
  • Provides instant hot water for your sink's faucet

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

11. AB WiseWater

Are you a stickler for premium-grade products? If yes, we would ask you to look somewhere else. However, if you are willing to be a little compromising, AB WiseWater ticks off everything that’s required on the list of being a standard water heater. This unit packs enough punch to provide hot water for requirements on demand.

The temperature range can scale up to 125F, providing moderately hot water for a shower; however, it’s difficult to say whether it would be satisfactorily hot for you or not. As far as the price goes, it’s budget-friendly and fairly easy to install. AB WiseWater can save up to 50% on your electricity bill, which is definitely a point to consider.

3GPM of flow rate is technically sound to provide a steady flow of hot (or warm) water. What might tip the scales in its favor is its robust build, which promises a longer shelf life for years to come.

AB WiseWater Water Heater in a Nutshell


Pros

Economical; gives good value for money
Energy-efficient (helps you save 50% on your bills)
Compact; can be fitted/mounted anywhere

Cons

Temperature range up to 125F, which is enough to provide warm, but not hot water
No warranty information

Last update on 2020-09-21 / Affiliate links / Images from Amazon Product Advertising API

That’s a wrap to this list on best electric tankless water heaters to buy right now. Next, we will be covering the aspects you must consider to bring a unit home. Note that whichever unit you choose, there are some common concerns that people overlook.

As a result, they end up flushing their hard-earned money on a product to their regret. In the upcoming section, we will discuss these considerations in detail to help you make an informed decision. So, stay with us.

Tankless Water Heaters – A Brief Description

InstallationTankless water heaters are smaller in size, so you can install them anywhere. However, their installation is a pretty lengthy process because you may be required to upgrade your home’s electrical wiring to support an electric model. Depending on the unit, you may also be required to bring in some additional equipment such as exhaust pipes.
How Do They Work?Tankless water heating units consist of gas or electric coils, which heat the water on demand. Their flow rates are measured in gallons per unit (GPM) of hot water the unit can produce. The more the flow rate, the faster is the heating process.
Benefitsâ—Ź Powerful and energy-efficient
â—Ź Space-savers
â—Ź Durable
â—Ź With long warranties
Drawbacksâ—Ź High installation costs
â—Ź Require an overhaul of electrical wirings to fit in a house
LifespanIn most cases, 20+ years
Sale
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White
  • 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

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

Buying Guide: Things You Must Consider While Buying an Electric Tankless Water Heater

Electric tankless water heaters are selling like hotcakes. They have emerged as safer, cheaper, and more effective alternatives to storage tank models. Cashing in on the hype, several companies have thrown themselves in the ring and launched their own versions of tankless electric water heaters.

As a result, a trend of commoditization has picked, and the market is seemingly flooded with water heating models of all sizes and specifications. This confounding variety has presented a conundrum for buyers; the conundrum of buying the right water heater for their needs.

Through this buying guide, we go over all the important aspects in detail that one must consider before buying an electric tankless water heater. We aim to cut through the confusion, help you identify the red herrings, and simplify the complex decision for you.

1. Mind the Temperature Range

Tankless water heating units perform the best when they aren’t required to raise the temperature beyond 30F. Even the most powerful units with the most cutting-edge features and a reasonable flow rate are capable of raising the temperature up to 50F only.

Given so, we would advise you to buy a tank or choosing a gas-powered unit if you live in areas with cold temperatures. These units are capable of a higher temperature rise and can provide hot water on demand.

However, if you live in moderately cold regions or plan to use a heater during spring or summer months, an electric tankless is an ideal option.

2. Compare the Flow Rates

Flow rate is an important deciding factor when buying a water heating unit. Notably, different faucets and appliances require different amounts of water. For instance, a bathroom faucet will require far less water than a dishwasher. So, before jumping the gun, it’s important to analyze your end-to-end requirements and then decide on your pick of the litter.

If your requirements are limited to taking a bath or dishwashing, a GPM of 3.5 – 4 will be good to go. However, if you are looking for a unit that can withstand multiple requirements in a day, nothing less than 6GPM will work.

Below is a chart that lists out the demand types and the suitable GPMs in a row. Take a look.

Demand TypeSize
Bathroom Sink0.5 GPM
Kitchen Sink0.5 GPM
Laundry Sink1.0 GPM
Dishwasher1.0 GPM
Standard Shower2.5 GPM
Low-Flow Shower1.5 GPM
Washing Machine1.5 GPM

3. Size and Brand Matter

Water heaters come in a variety of sizes. Before making a purchase, measure the space where you’re looking to install or mount a heater. For smaller spaces such as under a bathroom sink, you will be required to invest in compact units.

In the list above, we have mentioned a few compact sizes for you to choose from. On the contrary, if you have ample space, you can also opt in for mini-tank heaters.

Besides size, brand is also a factor to consider. Remember that legacy never lies. Brands are brands because they bring the best of quality to the table. By choosing a branded heater, you will bring in a guarantee of quality, trust, and a promise of high customer experience.

4. Take Note of the Materials Used

Traditional water heating units are built using materials that result in a buildup of limescale over a period of time. Getting rid of this chalky substance requires annual maintenance. However, the advent of new technologies, such as infrared, has changed things for the good.

Modern water heating units are good at tackling limescale and don’t require regular maintenance. Depending on the intensity of the incoming water, you may want to adopt an infrared water heater; however, note that such a unit will be pricey and feature a low flow rate.

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

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

Water Heater Maintenance Guide

How to Take Care of Your Electric Tankless Unit?

Maintenance is arguably the most overlooked aspect of using a water heating unit. However, make no mistake that a well-maintained unit works efficiently and allows you to derive a sustainable value from it.

Below, we have a curated a step-to-step guide on maintaining an inline water heater. The entire process is divided into actions in a pecking order to help you go through the chore with utmost safety. Take a look.

Step One:

Turn off the power supply to your heater before everything. Remember that there’s nothing as important as your safety.

Step Two:

Next, turn off the three valves attached to the unit: the cold water valve (most likely to be blue in color); the hot water valve (most likely to be red in color); and the main valve that supplies water in your house.

Step Three:

You will notice the port caps around the purge valves of both hot and cold valves. Remove them gradually using the T-shaped handles. This is why the second step that involves closing the valves is important. Also, ensure that the rubber washers are in place.

Step Four:

This step involves attaching the hosing lines, for which you may be required to check instructions in the user manual. You might as well need a sump pump to connect hoses and flush out the water from the valves.

Note that if your unit didn’t come with hosing lines, you can buy them from any hardware or plumbing store at easy rates.

Step Five:

Now, open the purge port valves by toggling them perpendicularly to cold and hot valves.

Step Six:

Choose a safe, non-toxic cleaner to flush down the dirt from the valves within the unit. As an option, you can choose undiluted white vinegar as your go-to cleaner to get the job done.

Flushing and draining procedures are illustrated clearly in user manual, so you can take all the necessary help from there. Allow this process to take 45 minutes for a thorough clean-up.

Step Seven:

Remember those T-shaped handles. Use them again but this time to close the purge port valves once the flushing gets over.

Step Eight:

Disconnect the hoses now from your unit’s valves.

Step Nine:

Put the caps on the purge valves and lock them firmly without damaging the ports or the washers.

Step Ten:

Restart the unit again. Usually, it’s the standard process of cleaning a water heater. Still, it might differ from heater to heater. So before throwing yourself to the job, read the manual carefully and identify the right maintenance practice. This is important to retain the efficiency of your heating unit.

Step Eleven:

Towards the end, turn on the hot water tap and fixtures slowly to let the air pass through the pipe. This is a minute-long process until you see and hear the water running.

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

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

Frequently Asked Questions

Q1. What are the benefits of an electric tankless system? Is it right for your home?

A1. Electric tankless water heaters are beneficial for more reasons than one. These units are easier to install, energy-efficient, and don’t produce greenhouse gases. Plus, they help you save a lot on energy bills, and supply hot water round the clock.
Considering all these factors, it doesn’t take a genius to understand that these water heaters are right for your home. Still, a lot depends on your home’s needs and preferences. Factor in everything such as the amount of space available, your monthly energy consumption, and budget before buying one for yourself.

Q2. What are the best locations to install a tankless water heating unit?

A2. Frankly speaking, an electric tankless water heater is safe to install anywhere. You can install it in a bathroom closet or under a sink if you have space issues. You can mount it next to your shower or your bath tub. The options are endless; however a lot depends on the kind of requirements you have.

Q3. Are there any other names for electric tankless water heaters?

A3. Yes, tankless water heater electric type is also known as the following:
1. On-demand electric water heater
2. In-line electric water heater
3. Instantaneous electric water heater

Q4. How to install an electric water heater tankless?

A4. With a little experience in plumbing and electrical wiring, anybody can install an electric tankless water heater. However, it’s important to note the tools and materials you will require to get through the whole process seamlessly. The list is below.
1. A power drill
2. A screwdriver set
3. A reciprocating saw
4. A torch kit and solder
5. A hand saw
6. Adjustable wrenches
7. Spade drill bits
8. Pressure-treated lumber
9. Metal ducts & pipe insulation
10. Black pipe
11. Caulk

Q5. Are there any official claims about the efficacy of electric water heating units?

A5. The US Department of Energy, in a report, has noted that on-demand water heaters improve savings on electricity bills by over 8 to 34 percent. That said, these units are more energy-efficient than traditional heating units.

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

Last update on 2020-09-20 / Affiliate links / Images from Amazon Product Advertising API

Conclusion

Electric tankless water heaters are all the rage lately and rightly so. These units are powerful, robust, energy-efficient, easy to install, and come with exceptional flow rates. So, we don’t find a reason why you shouldn’t adopt them right now.

Tankless units are available in multiple sizes and specifications, and each of them promises a massive return on investment. And, just in case you find the decision of selecting one out of the rest difficult, our guide on electric tankless water heater reviews can be of great help.

We are committed to helping you find out appliances that best fit your needs and we are unwavering in our spirit. For more such in-depth reviews, keep checking out this space regularly. Do you have any recommendations?

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