5 Best Tankless Water Heaters (Energy Efficient)

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Best Tankless Water Heaters

As we all know that the tankless water heaters are becoming more popular, forcing manufacturers to step up the pace in producing them, which isn’t necessarily a good thing for consumers because not all tankless water heaters are created equal.

That is why QualityPocket thought to share some of our trustworthy tankless water heaters that are tried and tested by actual homeowners, and our expert team, rather than smart company marketing.

So, it is on you now to choose your best tankless water heaters from the list below. That fulfills your requirements easily.

Our Top Picks

Our recommendations of Tankless Water Heaters.

Best Overall

EcoSmart ECO 27

EcoSmart ECO 27 Electric Tankless Water Heater

4.4/5

4.4 out of 5

Best Budget

EcoSmart ECO 11

EcoSmart ECO 11 Electric Water Heater

4.3/5

4.3 out of 5

Best Design

Stiebel Eltron 232886

Stiebel Eltron 232886 Tempra 36 Electric Water Heater

4.4/5

4.4 out of 5

Here, the best tankless water heaters for you to consider.

EcoSmart ECO 27 Electric Tankless Water Heater


EcoSmart ECO 27 Electric Tankless Water Heater

Actual Price is – $599

Tested By qualitypocket logo
4.3/5

VERY NICE


Check Lowest Price On Amazon

Actual Price is – $599

The Smart Technology electric tankless water heaters configured for climates where the incoming water temperature can reach as low as 37 degrees. The ECO 27 is capable of heating nearly 3 gallons per minute at this temperature. The ECO 27 is the largest electric tankless water heater available with Patented Self Modulating Technology. 

This model is well-suited for homes in the northern U.S.A, Canada, and in the southern U.S.A for large Roman-style or Jacuzzi tubs that generally have more demanding water usage needs. Digital temperature control allows you to set your temperature in increments of 1 degree. It has a self modulating flow sensor technology that regulates the amount of energy required to heat the water needed. Digital temperature display showing the outlet water temperature setting.

Why we love It

  • Endless hot water
  • Save up to 50% in water heating costs
  • Compact design, more storage space
  • Digital temperature control
  • Limited lifetime warranty
  • Easily replaceable elements

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EcoSmart ECO 11 Electric Water Heater


EcoSmart ECO 11 Electric Water Heater

Actual Price is – $277

Tested By qualitypocket logo
4.3/5

VERY GOOD


Check Lowest Price On Amazon

Actual Price is – $277

The Smart Technology electric tankless water heaters are configured as a “whole home” model for climates where the 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 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 scale, it will be more limited in the number of fixtures (gallons per minute) it can heat at one time compared to a warmer climate.

When sized correctly, tankless water heaters will provide endless hot water and only consume the energy needed, giving the user complete control. The ECO 11 requires a minimum 125 amp electrical panel for installation with (1) 60 amp double pole breaker connected to (1) set of #6 AWG wire. Plumbing connections are 1/2″ compression fitting with the option of 1/2″ NPT adapter included.

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Why we love It

  • Endless hot water
  • EcoSmart’s sleek, wall-mounted design 
  • Compact design, more storage space
  • Digital temperature control
  • Save Money, Save Space, Save Energy
  • Easily replaceable elements
  • Most advanced self modulating technology

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Stiebel Eltron 232886 Tempra 36 Electric Water Heater


Stiebel Eltron 232886 Tempra 36 Electric Water Heater

Actual Price is – $850

Tested By qualitypocket logo
4.4/5

EXCELLENT


Check Lowest Price On Amazon

Actual Price is – $850

Stiebel Eltron Tempra 24 Electric Tankless Whole House Water Heaters, 240 V, 24 kW. Set the knob on the front cover and enjoy water temperatures between 86 Degree (30 Degree C) and 140 Degree (60 Degree C). 

Change the desired temperature at any time. No purchase of a remote selector control is necessary. Advanced IC technology ensures that the water temperature never deviates from the set point.

With powerful output, compact design, remarkable high energy saving features. Their whole house electric models of tankless water heaters perform with the highest standards for comfort and reliability. Tempra Plus models feature Advanced Flow Control, and exclusive to Stiebel Eltron tankless water heaters. 

If hot water demand exceeds working capacity, Advanced Flow Control automatically maintains consistent temperatures by slightly reducing flow. Intelligent self modulating technology frequently ensures the least amount of energy used to heat the water.

A Tempra 36 Plus provides hot water at a constant temperature for up to 3 or 4 bathrooms in warm climates or 3″ bathrooms in frosty climates. Stiebel Eltron invented tankless electric water heaters technology more than 90 years ago and is still the industry pioneer and world leader. Their engineering and manufacturing tradition of excellence means you can depend on the performance and reliability of their products.

Why we love It

  • More energy saving
  • Totally Silent Operationn
  • Never run out of hot water
  • Small & Compact and no venting is required
  • Automatically maintaining hot water temperature

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Rinnai V75iP High Efficiency Tankless Hot Water Heater


Rinnai V75iP High Efficiency Tankless Hot Water Heater

Actual Price is – $990

Tested By qualitypocket logo
4.4/5

VERY GOOD


Check Lowest Price On Amazon

Actual Price is – $990

V75iP is the perfect combination of high efficiency, comfort, and value in a propane (natural gas model) tankless water heater from Rinnai. Ideal for small to medium homes or remodels, compact, easy to install, reliable, and perfect for indoor locations; Rinnai products provide peace of mind with warranties that surpass the competition.

Enjoy the comfort and convenience of continuous hot water at a lower price. Rinnai has expanded the Value Series by adding models to suit medium- and smaller-sized homes. Get the reliability and durability only Rinnai can offer, while saving energy factor and precious floor space.

With technology that operates only when hot water is needed, super efficient heating coils, no pilot light, and no storage tank to heat and reheat water, you save on energy and utility bills. Rinnai Tankless Water Heaters use up to 40% less energy than a traditional tank water heater. 

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Plus, with premium technology, increased energy efficiency, an improved Home Energy Rating System (HERS) Index Score, and optimized LEED ability, their tankless water heaters can increase your home’s value. You can even qualify for energy efficiency rebates and tax credits. It’s a smart investment for now and the future.

Why we love It

  • Endless Hot Water
  • Hot Water On-Demand
  • Save Valuable Space
  • Affordable, Efficient Savings
  • 100 years of Confidence
  • Sustainable Reliability

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Stiebel Eltron Tankless Water Heater


Stiebel Eltron Tankless Water Heater

Actual Price is – $700

Tested By qualitypocket logo
4.6/5

EXCELLENT


Check Lowest Price On Amazon

Actual Price is – $700

The Stiebel Eltron Tempra 24 Plus Tankless Water Heaters features exclusive Advanced Flow Control technology invented by Stiebel Eltron automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds the capacity to ensure that hot showers will never be interrupted. Tankless 24 Plus will typically use 15-20% less energy compared to conventional electric tank water heaters. Now it’s possible to save significantly more power depending on personal home usage habits.

The difference is that conventional tank water heaters frequently store hot water, and as a result, lose 15%-20% of the total energy consumed to the environment around them. That is called standby heat loss. Tank water heaters that use gas lines or oil are even less efficient because they also lose heat through their vents to the outdoors.

Their tankless water heaters do not need venting, and will not store hot water, waiting for you to use it. They operate on-demand to provide continuous and endless hot water when you need it, and not waste energy when you don’t.

Why we love It

  • Constant energy saving
  • Silent Operationn
  • Never run out of hot water
  • Small and Compact
  • Digital dispaly for ease
  • Advanced flow control

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Advice

These are the best products in the tankless water heaters category. If you are still confused about what to choose, let us clear your doubts. 

EcoSmart ECO 11 Electric Tankless Water Heater is an outstanding tankless unit for this year because it has everything that you require in water heaters like Compact design, Save Money, Save Space, Save Energy, affordable plus Easily replaceable elements.

It ensures long-life and durability because of its advanced features. It also allows users to enjoy a consistent supply of hot water. So, what you’re waiting for, buy your first best tankless water heater today.

Everything You Need to Know About Buying a Tankless Water Heater

What is a Tankless Water Heater

Tankless water heater take up much less space than storage water heaters as they heat the water directly. When you turn on the hot water, the cold water travels through a pipe and into the tankless water heater unit where the water is heated by a gas unit burner or an electric element. That allows you a constant supply of hot water.

On average, tankless water heaters can provide 2 to 5 gallons of hot water per minute. Gas-fired tankless water heaters, according to energy.gov, can produce higher flow rates than electric models.

For those with large families who go through a lot of hot water, installing more than one tankless water heater is common. That will ensure there is always enough hot water available for showers, washing machine laundry, and dishwasher.

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Tankless Water Heater Advantages

Tankless water heaters (also called “on-demand” units or an instant water heater) use 30 to 50 percent less energy than units with tanks, saving a typical family about $100 or more per year, depending on water usage.

  • These units heat water only when you turn on the faucet.
  • They usually operate on natural gas or propane.
  • The main advantage is that they eliminate the extra cost of keeping 40 to 50 gallons of water hot in a storage tank, so you waste less energy.
  • They also offer a continuous supply of hot water, which is ideal for filling a big hot tub or a whirlpool.
  • They’re more compact than a standard water heater and mount on a wall.

Tankless Water Heater Disadvantages

  • The primary disadvantage of on-demand or instant water heaters is the upfront cost.
  • The smaller units that you often see won’t produce enough hot water to serve most households. They’ll only subserve one faucet at a time—a problem if you want to shower while the dishwasher is running. There are larger units that can handle the demand of a whole family, but they are expensive. 
  • But because tankless units have high-powered burners, they also have special venting requirements (a dedicated, sealed vent system, which requires professional installation). Natural gas burners often need a larger diameter gas pipe, which adds to the initial installation cost.

Electric v/s Gas Tankless Water Heaters

The difference between electric tankless water heaters and gas tankless water heaters is their efficiency. Electric tankless water heaters are typically around 98 percent or more efficient, while gas tankless water heaters are about 80-85 percent efficient. A gas tankless water heater can be cheaper to run and will typically last longer.  

Electric Tankless Water Heaters

Tankless water heater will free up space that a bulk water heater typically occupies. An electric tankless water heater will be more efficient than a tankless gas water heater but know that an electric model requires a lot of electricity. A whole-house electric tankless water heater can use more than 25,000 watts of energy, compared to 5,000 watts of power with a conventional water heater. 

Gas Tankless Water Heaters

Gas tankless water heater will last longer than traditional water heater, and they’re safer than conventional water heater. One disadvantage is that if there is scale build-up, a tankless water heater can automatically shut off.

The Bottom Line: Price tag and Installation

When you’re pricing a unit, be sure to get an estimate or firm bid on installation costs. That is not a do-it-yourself project unless you have pro-level skills. You can find the best tankless water heaters at many home centers and plumbing specialty stores.

Thanks for reading so far. We hope this article of Top 5 Best Tankless Water Heaters will help you to find the best Tankless Water Heater. Happy shopping!

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