who makes the best tankless water heater in 2022 – Complete Guide

The answer to this question is ambiguous. Because all tankless water heater brands compete and are always striving to outpace one other.  It means that the result of every upcoming tankless model is better than the past or current versions. Thus, no manufacturer can keep on holding the title of the best tankless water heater. So, today we will go over the best tankless unit of the top tankless brands. Let you know, which models of which brand are the best. So, you can make your decision on who makes the best tankless water heater in 2022 with sufficient knowledge backing it.

Let’s discuss some factor of who makes the best tankless water heater

1. Best in Budget Tankless Water heater

  • EcoSmart ECO 27 Tankless water heater

Tankless water heaters by EcoSmart are recognized for their low cost. Among which Eco 27 is a great tankless water heater option. It is one of the best tankless models currently available in the market based on affordability. An “ECO 27” tankless water heater utilizes patented self-modulating technology. This technology makes the tankless water heater operate at different capacities based on the water demand instead of total capacity. It also helps save up to 50% on hot water expenditures. Being an electric tankless unit, it gives the highest energy efficiency of 99.8%.

EcoSmart tankless water heaters also have a modest minimum flow rate of 0.3 gallons per minute. This means that they only need a 0.3 gallons per minute demand to kick start into action. Meanwhile, other tankless water heaters need 0.75 to 1 gallons per minute of output to jump start. Hence, result in you hanging when you want to wash your hand using an open faucet. EcoSmart ECO 27 has a digital control that allows ±1 degree temperature change instead of ±5 degree temperature change, as in most tankless water heaters. This will enable you to make better temperature adjustments to meet your desired needs within the range of 80°F-140°F.  Finally, it may include copper or stainless steel components, which ensures that it is extremely durable.

The Major Cons of the EcoSmart Eco 27 tankless water heater includes a lack of advanced features and the inability to meet your needs in colder regions. ECO 27 can give three and above GPM hot water if the incoming water temperature is above 37°F.  Hence, in colder areas (below 37°F), you can expect lower gallons per minute output than the actual capacity. The image below can give you an accurate idea of how many gallons per minute of output you can expect.

2. Best point-of-use (POU) Tankless Water heater

  • Bosch Tronic 3000 mini-tank water heater

Just like its name suggests, it is a mini-unit primarily used as a point-of-use tankless water heater. This means that you cannot get hot water for the whole house, but it is perfect for a single kitchen or bath. It fits comfortably beneath a sink or a cabinet. It comes in the sizes of 2.5, 4, and 7 GPM units. Being a point-of-use tankless unit, it doesn’t take any time to provide you with hot water.

You can use it as a point of use only or in combination with another tankless water heater to eliminate the wait time.  A single Bosch Tronic 3000 can supply water to a maximum of two faucets at the same time.

It has a number of noteworthy advantages, one of which is that it does not necessitate any difficult setup. It is portable, and you can transfer it to your desired location. All you need is access to a standard 120V plug and connect the faucet with the tankless unit. You can move the unit to anywhere required, like from kitchen to shower or an RV. It is your best partner for little hot water needs.

In terms of warranty, a Bosch Tronic 3000 mini-tank water heater comes with a six years warranty for the unit and a two years warranty for its parts. Although for the 7 GPM unit, it is only applicable when installed by an authorized dealer.

3. Best electric tankless water heater

  • Stiebel Eltron Tankless water heater

A Stiebel Eltron Tempra 24 plus is a perfect choice for an electric tankless water heater. It is best for a small family who doesn’t need a lot of hot water capacity. They use a copper heating element technology that makes them more corrosion resistant.

The most attractive thing about the Stiebel Eltron Tempra 24 plus is that it has advance flow technology. Through this, the Stiebel tankless water heater allows you a constant water temperature at all times. Even if you exceed the tankless capacity, a Stiebel Eltron water heater will slow down the water supply to the faucet to ensure that you get only the hot water. Which to me is an excellent point as no one wants to experience cold showers, especially in the winter. 

Moreover, it has an energy efficiency of 99% and self-modulating technology to ensure you get the maximum savings. Additionally, I recommend tempra 24 plus instead of its higher models like Tempra 29 plus and Tempra 36 plus because Tempra 24 plus only needs an amperage of 150A. Unlike its higher models who need 200-300 Amperage to operate. Hence, the upgrading circuit will still be in bearable range. Other than this, they work silently, which is a bonus.

In terms of their warranty, a Stiebel Eltron Tempra 24 plus comes with a seven-year warranty for leakage and three years for parts replacement.

4. Best Gas Tankless Water Heater

  • Rinnai RUR98iN  Tankless water heater

Rinnai RUR98iN tankless unit is condensing unit. It uses two heat exchangers to heat the water. The combustion of gas powers one heat exchanger while hot exhausts power the other. Hence, there is no stand-by loss, cycling loss, and heat loss in the form of exhausts. Being a condensing unit, it gives a peak energy efficiency of 96%.

Furthermore, it is a high-powered machine that offers a rise of 60° temperature and has a hot water capacity of 9.8 GPM. It means that even in the colder areas, it can continue to work without much difficulty. At the same time, a capacity of 9.5 GPM shows that it can even meet the needs of larger families. It also holds recirculation capacity, ensuring that you get the hot water the instant you open the faucet.

Frequently Asked Questions

What is the best tankless water heater on the market today?

There are many excellent tankless water heaters present in the market. EcoSmart ECO 27 gives the best price to value ratio. It is an affordable tankless water heater that provides enough hot water for the small family and offers 50% energy savings. It also has other technologies that make it more efficient. Its only drawback includes the absence of advanced facilities as it is a budget tankless unit with lower power. This lower power makes it difficult to get the same flow rate in colder regions.

What are the highest-rated tankless water heaters?

Based on what customers are looking for in a tankless water heater, we’ve narrowed it down to four options. Each has its edge over the other.
1. Best budget:    EcoSmart ECO 18 and ECO 27
2. Best Point-of-use:              Bosch Tronic 3000 mini-tank
3. Best electric:     Stiebel Eltron Tempra 24 plus
4. Best Gas:    Rinnai RUR98iN.

Can you have a tankless water heater without gas?

The tankless water heater comes both in electric and gas units. If the gas is unavailable where you live, you can opt for an electric tankless water heater. Which is the best way of moving to a tankless from a tank water heater.

What size breaker do I need for a gas tankless water heater?

Most of the tankless work excellently with breakers of 40-50 AMP. Although, you may need to install more than one depending on the wire connections.

Conclusion

Who makes the best tankless water heater in 2022 is not an easy question to answer as each different brand of tankless water heater has its excellence. We believe that to decide the best tankless is subjective and depends on the people’s needs. That’s why we reviewed different tankless water heaters based on the common people’s needs.


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Emma Johnson
By Emma Johnson

Hi, This is Emma. Author at “BestHeaterGuide.com”. I am a graduate of Mechanical Engineering. Currently researching on heating technology. However, I have learned many home heating techniques and still learning home heating technology. And I love to share my research and reviews.

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