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Are you frustrated from the problems of your water heater tank like leaking, overheating and rusting then this is the time to shift to tankless. This comprehensive is totally dedicated to helping you out to find the best water heater tankless in 2020. It contained the detailed review about the popular brands out there in market
The tankless water heater is always in trend. But due to various brands, the selection of best as per your convenient became complicated. So we try to help you out to select the best water heater tankless for you.

Best Water Heater Tankless
- Rinnai V53DeN – Winner
- EcoSmart ECO 27 – Value for Money
- EcoSmart ECO 11 – Budget Friendly
- Rheem 240V 2 – Power efficient
- BLACK + DECKER 7kW – Low price
1. Rinnai V53DeN

Brand - Rinnai Measurement - 21.8 in*14.0 in Weight - 29.7 lb/13.5 kg Rate - 9.4 GPM(Gallon per Minute) Warranty - 10 years
Rinnai is the most frequent brand in the market, most of you heard of it. V53DeN is the perfect combination of high efficiency, comfort and value in a natural gas tankless water heater from Rinnai. Ideal for small to medium homes or remodels, compact, easy-to-install, reliable and perfect for outdoor locations. Rinnai is one of the best water heater tankless brands.
Space efficient
It is very compact in size as well as weight, which makes it ideal for small to medium homes, and its very easy to install with the help of it user guide.
Great flow rate
It comes with a great flow rate of 9.4GPM which is good. in winters you don’t have to wait for the warm water that will be always available to you with the help of this Rinnai V53DeN
- Energy Factor of 0.82 / Uniform Energy Factor of 0.81
- 15,500 BTU (Minimum) / 120,000 BTU (Maximum)
Pros
- Wi-Fi connectivity
- Easy to install
- Space saving
- Great water flow
Cons
- Bit expensive
2. EcoSmart ECO 27

Brand - EcoSmart Measurement - 17 in*17 in Weight - 14.7 lb/6.6 kg Rate - 6 GPM Warranty - Lifetime Limited
EcoSmart ECO 27 is a 27-kilowatt tankless electric water heater ideal for providing hot water for apartments, condominiums, townhomes and other whole home applications.
It can provide between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature. To select the best solution for your hot water needs, please refer to the sizing guide. With EcoSmart 27 you will be happier knowing the warm water you expect is available endlessly, consistently, and on-demand, allowing you to reduce your water and energy waste.
Power efficient
Ecosmart can save up to 50% of your electricity bills, consumes very less power and provides the warm water endlessly all the time. ECO is the best water heater tankless for power saving.
Automatic temperature control
The ECO 27 will provide up to 3 gallons of hot water per minute in areas with temperatures lower than 37 degrees Fahrenheit. In areas where the temperature of the incoming water is high, such as the southern United States, it can heat nearly 6 gallons per minute.
Theoretically, this means that you can power up to four showers and a sink at the same time without running out of hot water. Brilliant! It is said to be the best tankless water heater.
Pros
- Space efficient
- Power efficient
Cons
- No wireless connectivity
3. EcoSmart ECO 11

Brand - EcoSmart Measurement - 11.5 in*8 in Weight - 6.65 lb/3.1 kg Flow rate - 3.1 GPM Warranty - Lifetime Limited
EcoSmart ECO 11 is a 13-kilowatt tankless electric water heater ideal for providing hot water for a bathroom, small sink, office breakroom and other point-of-use or low-flow applications.
It can provide between 1.3 and 3.1 gallons-per-minute depending on the inlet water temperature. To select the best solution for your hot water needs, please refer to the sizing guide.
Low in Budget
EcoSmart 11 is very budget friendly and affordable to every one and provides the continous flow of water on your demand.
Pros
- Budget Friendly
- Small in size and weight
Cons
- Low water flow
- No wireless connectivity
4. Rheem RTEX-18

Brand - Rheem Measuring - 18.25 in*14.25 in Weight - 15.4 lb/7 kg Flow rate - 4.4 GPM Warranty - 5 years
Rheem RTEX-18 is a professional classic tankless electric water heaters offer continuous hot water quick and on demand for single point-of-use. And very compatable for the home use or office use.
It has the maximum of 4.4 GPM water flow rate which is said to be decent for the home use and can provides you the great supply of warm water Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F
Digital temperature Display
RTEX-18 has the on/off dial control with the adjustable digital temperature control, which makes it so easy to control. External Digital Thermostatic Control with LED display (+/- 1 degree accuracy)
Advanced self modulation
This technology is designed to increase energy efficiency and reduce your costs. This feature quickly heats water when you need it to provide instant hot water on demand. When you don’t, the heater conserves energy, saving you money.
Pros
- Power efficient
- Compatible size
- Simple installation
Cons
- Low water flow rate
- Not for large supply
5. BLACK + DECKER 11 kW

Brand - BLACK+DECKER Measurement - 14.19 in*4.8 in Weight - 8.8 lb/4 Kg Flow rate - 2.35 GPM Warranty - 7 years
BLACK+DECKER Electric Tankless Hot Water Heaters provides you with endless hot water only when you need it, without the wait or worry of ever running out. Unlike conventional tank water heaters, which constantly consume energy to keep your water hot 24/7.
The BLACK+DECKER does NOT require any gas lines or venting, and the compact design allows you flexibility to install virtually anywhere – in a cabinet, closet, garage, basement, etc.
This tankless Water Heaters also offers a great value with the assurance the category’s strongest warranty – 7 years leakage free, 5 years on the heat exchanger, and 2 years parts only. (important: inlet temps vary by location and seasonality
Pros
- Small in size
Cons
- Low water flow
- No wireless connectivity
If you have the big budget then you also check out this best water heater tankless. But a little expensive then others. But beast in performance.
- Stiebel Eltron – Tempra Plus
1. Stiebel Eltron – Tempra Plus

Brand - Stiebel Eltron Measurement - 14.5 in*16.5 in Weight - 18.9 lb/8.6 Kg Flow rate - 4 GPM Warranty - 7 years
Stiebel Eltron provides the on-demand, continuous and unlimited supply of hot water. The sleek design saves space and no venting required. It has a GPM of 4.0, which is decent for an electric instantaneous water heater. One of these heaters is suitable for a small home. If you have a good budget then this one is the best water heater tankless
Variants
It comes with six variants, you can choose as per your convenient
- Tempra 12 plus(12 kw)
- Tempra 15 plus(15 kw)
- Tempra 20 plus(20 kw)
- Tempra 24 plus(24 kw)
- Tempra 29 plus(29 kw)
- Tempra 36 plus(36 kw)
If you compare all of the best electric water heater tankless, you’ll see that the Stiebel Eltron Tempra Plus 24 consistently comes out on top. The European tankless water heater has a slightly higher price tag than some of the other models.
Pros
- Power efficient
- Great design
- Automatic controls
Cons
- Expensive
Hope this will help you out to make your final decision on best water heater tankless as per our convenient. Want to know more about electrical products visit our website