10 Best Tankless Water Heaters Of 2022

If you do not want to go through the long and hectic process of installing water heaters then this guide on 10 Best Tankless Water Heaters is just what you need!

Such heaters heat the water quickly, which saves you time and makes your life easier. A tankless water heater saves you electricity costs as well. So let’s have a look at our options!


What Does A tankless water heater Look like?

10-best-tankless-water-heater

It is a type of heater that does not have external storage, or you can say a tank in which it stores the water. It simply has an inflow and outflow valve, and a heat exchanger unit. 

It is unlike a tank-based or conventional water heater heats the water only when you turn on your shower faucet, which means you save gas bills.

Moreover, a such heater on average heats water at 120°C. As a result, water is heated instantly. 

Due to these factors, people are constantly in search of the best tankless heater.

However, getting one is not easy as it seems. Therefore, today we will talk about some of the best water heaters. 


Best Tankless Water Heaters

Here are our 10 best options based on:


10 Best 70-Gallon Water Heaters

10 Best Rheem Water Heater

9 Best RV Water Heater

10 Best Heat Pump Water Heater


1. Stiebel Eltron 202151 DHX 15-2 – Best Quality

Stiebel Eltron 202151 DHX 15-2
Stiebel Eltron 202151 DHX 15-2

There are several types of tankless heaters however, the one among the ten best ones is Stiebel Eltron model number 202151 DHX 15-2 heater.

This tankless heater is available in white color and it is known to run on a battery-powered style.

The majority of the people wonder what is so special about it. Well, this heater has the ideal dimensions of 4.31 x 8 x 14.13 inches.

Additionally, there are many other reasons why it is considered to be the ideal water heater and has various outstanding features.

Features

  • It comes with a system of direct coil water heating.
  • It has a completely electronic temperature regulating system.
  • The temperature can be adjusted up to 68 degrees to 140 degrees.
  • You can also use this heater as an alternative booster.
  • It has a very unique and smooth flowing control.

Pros and Cons

Pros

  • It comes with the outlet temperature regulation.
  • It has an induced flow rate meter to detect the rate of flow.
  • It is energy efficient.
  • This heater comes with a multifunctional screen.
  • It has an outer valve that allows you to control the heater.
  • The weight of this  heater is around 5.5 pounds.

Cons

  • Might be expensive for some of the potential customers.

Why is better than others?

The Stiebel Eltron is the best because it is more energy-efficient, and is extremely lightweight, which makes the overall installation process easy.

In addition, a flow rate is integrated into the tankless heater and a screen that tells you the temperature. 


2. Eemax SPEX60T LavAdvantage Thermostatic Electric Water Heater – Best Corded

Eemax SPEX60T LavAdvantage Thermostatic Electric Water Heater
Eemax SPEX60T LavAdvantage Thermostatic Electric Water Heater

Another best heater is the Emax SPEX60T device that promises to heat your water in the most ideal way.

The running source of this water heater is based on a corded electric system. The dimensions of this water heater are 12 x 5 x 3 inches.

Features

  • The weight of this water heater is estimated to be around 3.5 pounds.
  • It is certified from water sense.
  • It uses a voltage of up to 277 volts.
  • It has a compression setting that allows back or front electric flow.
  • This water heating device comes with copper pipes.
  • It has an anti-rusting property.
  • Can be easily fitted in your kitchen or bathroom.

Pros and Cons

Pros

  • It is very light and easy to handle.
  • It is very efficient in its working.
  • It comes with a solar system backup heating plan.
  • It is electricity efficient.
  • Safe to use and operate.

Cons

  • Might take longer to supply hot or warm water.

3. EcoSmart ECO 11 Electric Tankless Heater – Best for long term

EcoSmart ECO 11 Electric Tankless Heater
EcoSmart ECO 11 Electric Tankless Heater

The eco-smart 11 electric tankless heater is also preferred by many customers due to its ideal working and functions.

The dimensions of this water heating device are 3.75 x 8 x 11.5 inches.

Features

  • It provides you with a limitless supply of hot water.
  • It has a solid framework.
  • It is long-lasting.
  • It has a water temperature controlling system.
  • Uses thermal energy for the supply of hot water.

Pros and Cons

Pros

  • This device takes very little space.
  • It is ideal for supplying hot water in kitchen sinks and bathrooms.
  • It heats water only when you need it.
  • It saves most of your time.
  • It is very energy efficient and saves your billing expenses.
  • Tested and approved by water quality associations.

Cons

  • Warranty is not given.

4. Rheem RTEX-24 24kW 240V Electric Tankless Heater – Best utility

Rheem RTEX-24 24kW 240V Electric Tankless Heater
Rheem RTEX-24 24kW 240V Electric Tankless Heater

If you want an endless supply of hot water and do not want to wait for hours to get your tasks done then Rheem RTEX-24 electric tankless heater is the one for you.

This electric water heater is available in grey color with the ideal dimensions of 18.25 x 14.5 x 3.5 inches.

Features

  • The power source on which this heater operates is corded electric.
  • It has easy-to-use on and off power buttons.
  • You can turn it on or off as per your requirements.
  • It offers you a constant supply of hot water.
  • It saves a lot of your space.
  • It is meant to space water.

Pros and Cons

Pros

  • It offers a very strong performance.
  • It has a 24kW power source that offers you warm water.
  • Comes with an estimated amount of 5.9 gallons of hot water supply.
  • It saves you a lot of extra expenses.
  • They have an easy-to-install technology.

Cons

  • The customer service is not much upgraded.

5. Eco Smart ECO Electric Tankless Heater – Best smart

Eco Smart ECO Electric Tankless Heater
Eco Smart ECO Electric Tankless Heater

This eco-smart electric heater is also the one that is listed among the best models.

This eco-smart electric heater is available in white color. The ideal dimensions of these heaters are 3.63 x 17 x 17 inches.

Features

  • Endless supply of hot water.
  • Smart regulation of water control.
  • It saves a lot of energy to avoid excessive expenses.
  • Only turns on to heat water when necessary.
  • There is no power source.
  • It is ETL listed.

Pros and Cons

Pros

  • It is a 27-kilo watt water heating device.
  • Requires a voltage up to 240 volts.
  • It is manufactured from aluminum.
  • The weight of this water heating device is 10.98 pounds.
  • Safe to use.

Cons

  • It does not offer a lifetime warranty.

6. Rinnai V75iN Natural Gas Tankless Hot Water Heater – Best performance

Rinnai V75iN Natural Gas Tankless Hot Water Heater
Rinnai V75iN Natural Gas Tankless Hot Water Heater

The Rinnai  heater is operated on a gas supply. The dimensions of this tankless water heating system are 17.5 x 30 x 13 inches.

It uses natural gas and works on easy indoor installation.

Features

  • It has a very compact design.
  • It is very durable.
  • It is very easy to install and does not have much hassle.
  • It works with much high performance.
  • Supplies constant steam and heat.
  • It is very space-efficient.

Pros and Cons

Pros

  • It has a 1-year warranty.
  • Good heat exchanger system.
  • Works only when it is required to heat water.
  • Offers 9.8 GPM flow of hot water.
  • Uses less electricity.

Cons

  • Might need a professional installation plan.
  • Does not come with good customer support.

7. 3000W Mini Water Heater 110V Electric Tankless Instant Hot Water Heater – Best small

3000W Mini Water Heater 110V Electric Tankless Instant Hot Water Heater
3000W Mini Water Heater 110V Electric Tankless Instant Hot Water Heater

This water heating device is yet another device that is considered to be among the best ones.

It is available in white color and the dimensions are around 10.43 x 7.87 x 3.07 inches.

Features

  • It is manufactured from aluminum.
  • It has a waterproof system.
  • Easy to maintain and clean.
  • It is very convenient to carry.
  • Easy on and off options for operation.
  • Have a solid framework that does not rust.

Pros and Cons

Pros

  • The weight of the item is around 3.41 pounds.
  • It requires 110 voltages.
  • Comes with 8 accessories.
  • Ideal for low pressure.
  • It has fire protection as well.

Cons

  • Might not be suitable for heating a lot of water.
  • Water may not get much hot but only warm.

8. Natural Gas Heater – Best LED screen  

Natural Gas Heater
Natural Gas Heater

This natural gas heater is best for indoor systems. It is available in sleek and luxurious colors.

The power source on which this works is gas. The item dimensions are 26.2 x 17.1 x 7.3 inches.

Features

  • You do not have to wait for hot water for prolonged times.
  • It has a very high capacity for heating water.
  • It is CSA certified.
  • It comes with 2 years of warranty.
  • Endless supply of warm water.

Pros and Cons

Pros

  • Anti-freezing property.
  • It is very durable.
  • Comes with oxygen-free copper.
  • LED touch screen.
  • Easy and smart to use.
  • It filters germs as well.

Cons

  • The temperature of water might get fluctuated after some time.

9. Marey Tankless Heater – Best stainless steel

Marey Tankless Heater
Marey Tankless Heater

This Marey ECO1 heater is available in white color and comes with ideal dimensions are 8.7 x 3.5 x 14.2 inches. The style of this water heating device is smart.

Features

  • It is made from a stainless-steel material.
  • It is ETL-approved and certified.
  • Offers efficient hot water supply.
  • It has a steady temperature control system.
  • It comes with an LCD panel control.

Pros and Cons

Pros

  • Easy to use. 
  • Installation is very easy.
  • The easy turn on and off button is available.
  • It has smart working technology.
  • It is ideal for long-term use and does not fade away.
  • It is resistant to corrosion.

Cons

  • It is not a very high-quality tankless heater.

10. LQWY Mini Electric Heater  – Best shape

LQWY Mini Electric Heater
LQWY Mini Electric Heater

Lastly, the LQWY mini electric heater is among the best ones as well due to many reasons.

It offers an instant supply of hot water that is enough for 4 to 5 people. The color of this heating device is white.

Features

  • It works on a corded electric power source.
  • Easy to install.
  • Easy to use and operate.
  • It is made from aluminum.
  • Good framework.

Pros and Cons

Pros

  • save you a lot of space.
  • it is very safe to use.
  • Ideal for kitchen and indoor setups.
  • Prevents water leaking.
  • Strong and long-lasting pipes are installed.

Cons

  • Might not handle normal water pressure.

Comparison

PRODUCTRatingPriceBest ForPower SourceVoltagePower
Stiebel Eltron 202151 DHX 15-23.7/5$358.77QualityHard Wiring Required240V14400W
Eemax SPEX60T LavAdvantage Thermostatic Electric Water HeaterN/A$326.99Corded‎Corded Electric277V6000W
EcoSmart ECO 11 Electric Tankless Heater4.4/5$216.43Long Term‎54 AMP220V13000W
Rheem RTEX-24 24kW 240V Electric Tankless Heater4.4/5$591.07UtilityAC/DC240V24000W
Eco Smart ECO Electric Tankless Heater4.5/5$477.38SmartCorded Electric240V27000W

What To Keep In Mind While Buying a tankless water heater?

There are numerous things you should consider when buying the best tankless water heater.

Some of the most popular ones are specified below.

  • Warranty

One of the primary steps to consider when looking for the best tankless heater is to look at the warranty time.

They come with a few years’ warranties, which can save you a ton of cost in the future if it breaks down.

However, there are always some terms and conditions of a warranty, so make sure to keep this in mind. 

  • Efficiency 

Another thing you should consider when finding the best tankless water heater is to look at the efficiency rating.

Consider buying a tankless water heater that has a higher efficiency rating.

A higher efficiency rating means that more water would be heated in a short time, which would help you save money. 

  • Electric tankless water heater

One of the most important things to consider before purchasing a tankless water heater is to opt for an electric one.

They are more efficient and also work with advanced safety. The electrical heaters have an easy-to-use design and do not need any type of venting procedure. 

  • Maintenance 

Try to buy a tankless water heater that requires little maintenance. Electric-based tankless water heater requires far less maintenance than gas ones.

In electric ones, you only have to frequently clean the water inlet, whereas, in gas ones, you have to clean the gas chamber, and more. 


Conclusion

We have covered some of the best tankless water heaters you can get this year. Make sure to consider the things specified above when buying a tankless water heater.

In addition to this, make sure that the heater you are considering buying is in your range, as a thing that is in your budget is considered the best for you. 


FAQs

What Is A Propane Tankless Water Heater?

This kind of tankless water heater uses propane to heat the water. 

How Long Do Tankless Water Heaters Last?

Generally, tankless water heaters last between 10-20 years. 

NPC Overall Rating

Leave a Comment