Best Tankless Water Heater 2020 [ Storage & Quality ]

Different methods for heating water are used throughout the ages. Using heated water is a basic need, especially in winters. There are mainly two simple methods that are used in this era of technology. The first one is, traditional tank water heaters and the second is tankless water heaters.

Now, people are switching from tank water heaters to tankless water heaters, because they are easy to use and effective.its a fact that tankless water heaters are a little expensive but there are many advantages of the tankless water heater. For instance, these heaters are small in size and you don’t need to wait for an hour to heat the water.

Best Tankless Water Heater

Features to consider before buying a tankless water heater:

Many people got confused about which type of tankless water heater they should choose. Here are some key features that can be helpful in selecting the best water heater for you.

Electric or natural gas:

First of all, you need to know whether an electric water heater is best for your home requirements or natural gas water heater.

There are some minor differences between electric water heaters and natural gas water heaters. Electric water heaters are a little more expensive than natural gas heaters. Besides, if you don’t have a connection in your area a gas heater is not an option for you.

Electric water heaters don’t need any ventilation. In short, we can say there are both advantages and disadvantages to both gas and electric water heaters. It’s up to you, what are your house requirements. So, decide accordingly.

The flow of water:

The second thing which needs to be considered is the flow of heating water. Flow rate can be measured in gallons per minute, or GPM, with each fixture. It depends on the members of the house and the use of hot water in your house that which flow rate is appropriate for you.

If family members are more than 4 adults you should go for 8 to 10GPM of flow rate. If you are less than 4 members you can go for 3 to 5GPM of flow rate. GPM is basically a number to look for the gallons-per-minute rating.

Cost:

A tankless water heater can be used for 20 years. So, a little expensive can be a good choice in this case. Still, it also depends on the requirement of your house and your budget.

List Of The Best Tankless Water Heaters 2020

There are some water heaters that are much renowned in the market. The details of these water heaters are given below to help the customers for selecting the best product.

ProductDetailsPrice
Rinnai RUR98iN (Top Overall)Indoor Check Price
Rinnai RUC98iN Ultra SeriesIndoor Check Price
Rheem RTG-84XLN 8.4 GPM Low NOxOutdoor Check Price
Rheem RTGH-95XLN Prestige Natural GasOutdoor Check Price
Takagi T-KJr2-IN-NGIndoor Check Price
Stiebel Eltron Tankless Water HeaterOutdoor Check Price
Eemax EEM24027 ElectricIndoor Check Price
EcoSmart ECO 27 ElectricIndoor Check Price
Sio Green IR288 v2 POU InfraredOutdoor Check Price
Rheem RTEX-18 18kW 240VIndoor Check Price

1. Rinnai RUR98iN (Top Overall):

Rinnai RUR98iN is an innovative technology product that provides an endless supply of hot water. It also has a compact design that can be fixed anywhere in the house. The best thing is that it can be monitored with WIFI as well. Absolutely, this is one of the best water heaters for use.

Flow rate:

This product can maintain a flow rate of up to 6.5 gallons per minute. In other words, we can say its Flow rate is 70°(50°F) Temp Rise ranges between 4.2 (5.9) and 5.5 (7.7).

Other features:

Rinnai is made up of stainless steel CHROME PLATED HANDLE. It also has a condensing unit with dual heat exchangers.

Size:

The size of the Rinnai water heater is a maximum of 9.8 which is equal to a small size of a suitcase.

If you want get endless benefit till the years our deep research will suggest you this product to buy & enjoy it till a decade.
Pros
  • High flow rate GPM- 9.8
  • Instant hot water system
  • Equipped with WiFi monitoring
  • High temperature rise
Cons
  • Little expensive

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2. Rinnai RUC98iN Ultra Series (indoor):

The RUC98IN by Rinnai is a gas-controlled tankless water heater that comes outfitted with an advanced control front panel. Appreciate in no way different tankless advantages you’ve generally expected from Rinnai. It is also WiFi-enabled for monitoring and changing settings.

Flow rate:

The flow rate of the Rinnai RUC98iN Ultra Series (indoor) is 9.8 gallons per minute. It has Up to 0.96 Energy factor and Up to 0.92 Uniform Energy factors with 199,000 max BTU.

Other features:

It has a compact design which is even suitable for both big and small houses. Rinnai also takes tankless water heating one step further with condensing technology that delivers more efficiency than ever before.

Size:

It has a space-saving ultra size design with twin pipe which allows Indoor Installation. The complete measurement size of this product is Width: 18.5″ Height: 26″ Depth: 10″ Weight: 61.7 lbs Gas Connection: 3/4″ Water Connection: 3/4″.

This is a model that is designed to use indoors with natural gas.
Pros
  • Powerful
  • Energy saving
  • 9.8 GPM of flow rate
  • Suitable for every climate
Cons
  • Expensive

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3. Rheem RTG-84XLN 8.4 GPM Low NOx (outdoor):

Rheem is a company that provides you with all innovative, new tankless products. If we talk about Rheem RTG-84XLN, it is an outdoor and natural gas Residential Tankless Water Heater. Thus, This remarkable product provides a continuous supply of hot water from energy efficient and space saving design units.

Flow rate:

It is a gas water heater that maintains the flow rate of 8.4 gallons per minute. at 35-Degree Rise.

Other features:

United Logistics of America is a company that designed this wonderful Rheem RTG-84XLN 8.4 GPM Low NOx Outdoor Tankless Natural Gas Water Heater. The company has also attached a remote control with this water heater to operate it easily without going close to the water heater.

Size:

The Rheem RTEX-18 is an Electric Tankless Water Heater that features a compact design for installation in small areas. It means it is small in size like other tankless water heaters.

Afterward, it has a structure of self-modulation which is to maintain a consistent outgoing water temperature.
Pros
  • Low in cost
  • Remote controller
  • No venting required
  • High flow rate- 8.4 GPM
Cons
  • Only suitable in warm climate

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4. Rheem RTGH-95XLN Prestige Natural Gas (best outdoor):

Indeed, when you analyze tankless water radiators for outside use, Rheem water heaters will be directly close to the top. Actually, Rheem is one of only a handful of scarcely any worldwide brands.

It is really uncommon to locate an outside unit with such high vitality factor evaluations. This item covers private and business warming, cooling, regular strong style water heaters, tankless water heaters, just to make the company top ranked.

Flow rate:

This is a high-capacity tankless water heater. It offers 9.5 gallons per minute making it an excellent option for big homes.it has an industry best flow rate of 26 GPM which is the Minimum of its flow rate.

Other features:

This water heater is made by Rheem, a brand known for its top quality. There is no need for ventilation for this product. Furthermore, it really has a .94 Energy Factor with efficient stainless steel condensing heat exchanger. Besides, This product is made of stainless steel and can be used with natural gas.

Size:

This is considered an energy saving and compact item. Its space saving design is really amazing and best for all types of houses.

Rheem is the business chief for absolute warming, cooling, and water warming arrangements.
Pros
  • Energy efficient
  • Noneed for ventilation
  • Suitable for rainy climate
  • Excellent unit of good size
Cons
  • Low temperature rise

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5. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas:

Effective and ground-breaking, this water warmer sudden spikes in demand for regular gas. Typically, natural gas makes steam which must be vented because of the hazardous exhaust, yet this model works by consolidating the steam by means of an ignition chamber.

Flow rate:

This Japanese item is ideal on the off chance if you are searching for a marginally lower stream heater of around 6.6 GPM.

Other features:

This water heater can easily heat up water to a high temperature. This is also called a power heater which can be used both in commercial and residential areas.

Size:

This item of Tekagi is called an energy star. This is really small in size that can be adjusted at any place in the house.

The T-KJr2 model is the little unit in the Takagi line-up. The T-KJr2 is ideal for light private and brilliant warming applications.it is a Japanese tankless water heater.
Pros
  • Low in cost
  • Easy to install
Cons
  • Lower flow rate/GPM than other gas units

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6. Stiebel Eltron Tankless Water Heater – Tempra 24 Plus (Electric):

Hence, it is a machine that automatically maintains water temperature for constant comfort. It will make the flow less accordingly if more hot water is needed. Hot showers will never interfere again.

Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Furthermore, it is a noise free product with a digital temperature display on the front of the product.

Flow rate:

It has a GPM of 4.0, which is decent for an electric instant water heater. Besides, all the uses This heater has a high-temperature rise of 43 degrees Fahrenheit along with 99 percent energy efficiency.

Other features:

This amazing item is best for the whole house, and no venting is required.it also got eco friendly energy that also can save units. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase.

Size:

It has a small, sleek white design that saves space yet still provides endless hot water to whole house.

This German product tankless water heater is a Progressed flow control licensed innovation created by Stiebel Eltron.
Pros
  • Good design
  • Flawless unit
  • Digital control
  • 4 GPM flow rate
Cons
  • Expensive for electric unit

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7. Eemax EEM24027 Electric Tankless Water Heater, Blue:

This item is outfitted with a dial and computerized temperature control readout. The organization likewise offers a three-foot electric link for simple establishment. Exclusively, Eemax tankless water heaters give a nonstop graceful of boiling water and possibly warms the water you need when you need it.

Flow rate:

This water heater can manage to maintain a flow rate of 5.3 Gallons per Minute. Moreover, It also can produce enough hot water for up to 1 shower and 2 sinks simultaneously in colder climates.

Other features:

In hotter atmospheres, it can create enough high-temperature water for up to 4 Showers or sinks all the while. Although, it is a powerful product as a water heater.

Size:

Eemax definitely has a compact size that saves valuable storage space for usage. I think EEM24027 is the correct size for your hot water needs in a house.

Pros
  • Very efficient water heater
  • Emphasis on energy efficiency
  • Quick and painless installation
Cons
  • For small homes only

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

Eco-Smart items are innovatively best in class and are utilized around the world. The facts demonstrate that Each tankless electric water heater is easy to install, yet this one is excessively simple. In fact, every EcoSmart tankless electric water heater produces endless hot water. While, at the same time it saves space, time, and money. It also allows us to reduce our overall energy and water use.

Flow rate:

co smart simply got activation flow of 0.3 GPM. It just heats up the water as it passes through the unit. Hence, Instead of storing hot water like a traditional tank water heater, its self-modulating technology gives water at the required time.

Other features:

EcoSmart ECO 27 is a tankless electric water heater that is ideal for providing hot water for apartments, condominiums, townhomes, and other whole houses. Even, it really saves time with its point-of-use, installation and on-demand heating cut down on waiting for hot water.

Size:

Conventionally, all tankless heaters occupy a great deal of room, yet EcoSmart’s smooth, divider mounted plan opens up floor space for more stockpiling and is 90% smaller than a tank.

Pros
  • Reasonable price
  • Unmatched quality
  • Lifetime warranty
  • Conversion option to Boiler Mode
Cons
  • Warranty requires professional installation

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9. Sio Green IR288 v2 POU Infrared Electric Tankless Water Heater – None Corrosion – Extends The Life of Tankless Water Heaters:

The Sio Green best premium smaller than expected tankless water warmer purpose of utilization. Truth is stranger than fiction, this lovely item is permitting you to set aside time and cash. You also need to spend 0 on maintenance because it will need no replacement parts or filters as well.

Flow rate:

Sio Green IR288 has a GPM of just 1.7. Of flow rate. This is a really ideal flow rate for home installation. Furthermore, this is also a space-saving and ultra-practical tankless water heater system.

Other features:

This electric tankless heated water storage has an activated Power Technology. Its Manual Mode can also undoubtedly tailor its presentation to your family’s needs.

Size:

The ergonomic size and simple yet innovative construction will allow you to install it almost anywhere or use it as a booster. It can deliver endless hot water gallons according to requirements.

This is really the smallest tankless water heater on the list. But it still has a high energy rating of 98 percent.
Pros
  • Easy to install
  • Impressive quality
Cons
  • Low flow rate

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10. Rheem RTEX-18 18kW 240V Electric Tankless Water Heater:

Meanwhile, it has a durable copper immersion two heating elements, field Serviceable. It produces no sounds at all and you even can install it anywhere in the home. The power of this water heater is adjustable just to avoid wasting energy. In this way, you will have your own control on the energy of the water heater at your home.

Flow rate:

The flow rate of this smallest and amazing product is up to 4.4 GPM which means 7 gallons per minute. .it also has an easy replacement, simple installation, and digital temperature display as well.

Other features:

The features an electronic control allows for temperature adjustment in one-degree increments from 80 degrees to 140 degrees (F).

Size:

it is really small in size. Users can easily get the benefits of this product.

Rheem-18 is one of the top electric divider mounted boiling water warmers. You can likewise leave the radiator to utilize self-tweak and spare temperature.
Pros
  • Not noisy
  • Best in quality
  • Efficient rating
  • Self-modulating technology
Cons
  • Low flow rate

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