Best tankless water heater. Reviews January, 2021

Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, [email protected]

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Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt

Current price: 140.83 USD

Saving: $48.17 (25%)

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Height: 6 Inches

Length: 3 Inches

Width: 11 Inches

Weight: 4 Pounds

Warranty: 1 Year Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates

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Rinnai RL75IN, Large, Natural Gas

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Current price: 1127.25 USD

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Height: 23 Inches

Length: 14 Inches

Width: 9.3 Inches

Weight: 50 Pounds

Warranty: See Manufacturer

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU

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EcoSmart 8 KW Electric Tankless Water Heater, 8 KW at 240 Volts with Patented Self Modulating Technology

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Current price: 208.9 USD

Saving: $60.10 (22%)

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Height: 4 Inches

Length: 12 Inches

Width: 9.5 Inches

Weight: 4.75 Pounds

Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable

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Marey GA10LP Power 10L 3.1 GPM Propane Gas Tankless Water Heater, Liquid, White

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Search only MAREY brand name

Current price: 229.99 USD

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Height: 23.6 Inches

Length: 6.9 Inches

Width: 13.6 Inches

Weight: 21 Pounds

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed

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Rinnai RL94EN RRL94eN, Large, RL94eN-Natural Gas/9.4 GPM

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Current price: 1371 USD

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Height: 22.9921259608 Inches

Length: 14.0157480172 Inches

Width: 9.9999999898 Inches

Weight: 44.312914662 Pounds

Warranty: See Manufacturer

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home

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EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

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Search only EcoSmart brand name

Current price: 210.65 USD

Saving: $66.35 (24%)

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Height: 11.5 Inches

Length: 3.75 Inches

Width: 8 Inches

Weight: 6.5 Pounds

Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Patented Self Modulating Technology and design
Never run out of hot water with an ECOSMART tankless water heater
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Lifetime warranty

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Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology,White

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Current price: 377.1 USD

Saving: $121.90 (24%)

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Height: 17 Inches

Length: 3.625 Inches

Width: 14 Inches

Weight: 14 Pounds

Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labor or any incidental damages.

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Patented Self Modulating Technology and design
Never run out of hot water with an ECOSMART tankless water heater
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Lifetime warranty
75 A
Digital temperature control in 1-degree increments gives users complete control of hot water
Save up to 12 cubic feet of storage space.
Never run out of hot water with an ECOSMART tankless water heater.
Save up to 60% on your water heating costs with the most advanced, self modulating technology available
Lifetime warranty for residential use
Copper and stainless components
Manufactured in China
The product is easy to use
The product is highly durable

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Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray

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Current price: 375.99 USD

Saving: $53.01 (12%)

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Height: 14.5 Inches

Length: 18.25 Inches

Width: 3.5 Inches

Weight: 14.8 Pounds

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Patented Self Modulating Technology and design
Never run out of hot water with an ECOSMART tankless water heater
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Lifetime warranty
75 A
Digital temperature control in 1-degree increments gives users complete control of hot water
Save up to 12 cubic feet of storage space.
Never run out of hot water with an ECOSMART tankless water heater.
Save up to 60% on your water heating costs with the most advanced, self modulating technology available
Lifetime warranty for residential use
Copper and stainless components
Manufactured in China
The product is easy to use
The product is highly durable
Threaded for easy replacement, simple installation, digital temperature display
Simple installation – bottom 3/4 inch NPT water connections
Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
Most advanced self-modulation, adjust power to meet hot water demand
External digital thermostatic control with LED display (+/1 degree accuracy)

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Rinkmo Electric Tankless Water Heater 18KW 240V Instant Hot On Demand Residential Electric Water Heater for Bathroom Bathtub rv Whole House Shower Sink Small

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Search only Rinkmo brand name

Current price: 349.99 USD

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Height: 17 Inches

Length: 13.12 Inches

Width: 3.12 Inches

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Patented Self Modulating Technology and design
Never run out of hot water with an ECOSMART tankless water heater
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Lifetime warranty
75 A
Digital temperature control in 1-degree increments gives users complete control of hot water
Save up to 12 cubic feet of storage space.
Never run out of hot water with an ECOSMART tankless water heater.
Save up to 60% on your water heating costs with the most advanced, self modulating technology available
Lifetime warranty for residential use
Copper and stainless components
Manufactured in China
The product is easy to use
The product is highly durable
Threaded for easy replacement, simple installation, digital temperature display
Simple installation – bottom 3/4 inch NPT water connections
Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
Most advanced self-modulation, adjust power to meet hot water demand
External digital thermostatic control with LED display (+/1 degree accuracy)
🚿【Compact Size Save Space】Rinkmo water heater only like a small suitcase, save your space and giving more to your living area. Easy to install and operation, set temp by turning the button, press the button to switch between Fahrenheit/ Celsius.
🚿【Stable Water Temp for Whole House】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
🚿【Stable Water Temp for Whole House 】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
🚿【Save Money Save Cost】No need to preheat before using instant tankless water heater. After using our Rinkmo high efficient water heater, you will find your water Heating Costs Reduce Up to 60%, due to our heater is 99.8% Energy Efficient, you can get hot water within 3s; Create heat without direct contact with metals,No mineral buildup so you don't need to maintenance or fix it and replace the heater coils, No expensive maintenanc cost in the future.
🚿【TIPS】Please notice that the 18KW tankless water heater requires 2 x 40 AMP breakers and 2 x 8 AWG wire, the Min. Water Flow is 0.4GPM/1.5L/min. The 24KW tankless water heater requires 3 x 40 AMP breakers and 3 x 8 AWG wire, and the Min. Water Flow is 0.66GPM/2.5L/min.

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Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM

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Current price: 680.4 USD

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Height: 26.9 Inches

Length: 14.04 Inches

Width: 9.27 Inches

Weight: 45.6 Pounds

Warranty: See Manufacturer

Connection Fittings 1/2" NPT
Amperage Draw 29 amp. kW - 3.5 kW
For one sink at 0.5 GPM in colder climates the POU 6 is recommended
Requires 1 x 30 amp breaker and 10 AWG wire
Can provide hot water for one sink at 0.5 GPM in warmer climates
Commercial Temperature Settings: 98°F - 160°F (commercial controller must be purchased separately)
Residential Temperature Settings: 98°F - 140°F
82% Thermal Efficiency
Comes standard with MC-91-1US Digital Controller with Error Code Indicator
10,300 - 180,000 BTU
Activation Flow - 0.3 GPM
Heating elements are durable and are threaded for easy replacement
Manufactured in China
The product is easy to use
The product is highly durable
Works easily with low levels of water pressure
Rustproof, no water loss due to leaks
Allows water temperature to be controlled
5-year
Unlimited hot water whenever is needed
No electrical connection is required so it's perfect alternative for those homes experiencing frequent power outages
Compact design saves space and is easy to install almost anywhere
Save up to 60% on electricity bills for water heating
Provide endless hot water on demand and only as needed
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
Up to 9.4 GPM hot water flow rate (varies by groundwater temp)
RL94eN HE+ High Efficiency Tankless Hot Water Heater - Natural Gas: Outdoor Installation Only
Endless hot water for your entire home
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
Patented Self Modulating Technology and design
Never run out of hot water with an ECOSMART tankless water heater
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Lifetime warranty
75 A
Digital temperature control in 1-degree increments gives users complete control of hot water
Save up to 12 cubic feet of storage space.
Never run out of hot water with an ECOSMART tankless water heater.
Save up to 60% on your water heating costs with the most advanced, self modulating technology available
Lifetime warranty for residential use
Copper and stainless components
Manufactured in China
The product is easy to use
The product is highly durable
Threaded for easy replacement, simple installation, digital temperature display
Simple installation – bottom 3/4 inch NPT water connections
Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
Most advanced self-modulation, adjust power to meet hot water demand
External digital thermostatic control with LED display (+/1 degree accuracy)
🚿【Compact Size Save Space】Rinkmo water heater only like a small suitcase, save your space and giving more to your living area. Easy to install and operation, set temp by turning the button, press the button to switch between Fahrenheit/ Celsius.
🚿【Stable Water Temp for Whole House】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
🚿【Stable Water Temp for Whole House 】Our smart modulating technology and formula to calculate the difference between the desired temp and current temp, adjusts power input based on flow rate and temp setting in real time by our temp sensors and flow sensors. No sudden temp changes.
🚿【Save Money Save Cost】No need to preheat before using instant tankless water heater. After using our Rinkmo high efficient water heater, you will find your water Heating Costs Reduce Up to 60%, due to our heater is 99.8% Energy Efficient, you can get hot water within 3s; Create heat without direct contact with metals,No mineral buildup so you don't need to maintenance or fix it and replace the heater coils, No expensive maintenanc cost in the future.
🚿【TIPS】Please notice that the 18KW tankless water heater requires 2 x 40 AMP breakers and 2 x 8 AWG wire, the Min. Water Flow is 0.4GPM/1.5L/min. The 24KW tankless water heater requires 3 x 40 AMP breakers and 3 x 8 AWG wire, and the Min. Water Flow is 0.66GPM/2.5L/min.
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
Endless hot water for your entire home

More Info

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