Top 10 Instant Hot Water Heaters with Self-Modulating Temperature Technology
for January 2022

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9.8
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Thermoflow 12kW Tankless Electric Water Heater, On Demand Instant Hot Water Heater with Self-Modulating Temperature Technology, 12KW at 240 Volts

Thermoflow 12kW Tankless Electric Water Heater

On Demand Instant Hot Water Heater with Self-Modulating Temperature Technology, 12KW at 240 Volts

by Thermoflow
What We like

Easy Installation and Durable - Compact and wall-mounted design with quality stainless steel heating elements, thermo cut-off protection, CSA certified, IP24 protection, ensuring a long service life

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Product Features

  • Energy and Cost Saving - Heating water only when it's needed with heating efficiency up to 99%, savings of up to 50% on water heating costs; minimal activation flow rate 0.58GPM
  • Self-Modulating Temperature Technology of Germany - use only necessary energy to heat water to temperature of your needs, also ensure steady output temperature despite of flow fluctuation. LCD digital display shows output temperature, which allow you to adjust temperature in 1-degree increments; temperature range 104-140F
  • On Demand Endless Hot Water - instant hot water for small apartment or point of use, constant supply of hot water whenever and however long you need, eliminate waiting time and never run out of hot water; Flow rate 1.8GPM at 45F temp.rise and 1.3GPM at 65F temp.rise [New Upgraded Units to solve the leaking problem]

Self-modulating temperature technology of germany - use only necessary energy to heat water to temperature of your needs, also ensure steady output temperature despite of flow fluctuation. lcd digital display shows output temperature, which allow you to adjust temperature in 1-degree increments; temperature range 104-140f Energy and cost saving - heating water only when it's needed with heating efficiency up to 99%, savings of up to 50% on water heating costs; minimal activation flow rate 0.58gpm On demand endless hot water - instant hot water for small apartment or point of use, constant supply of hot water whenever and however long you need, eliminate waiting time and never run out of hot water; flow rate 1.8gpm at 45f temp.rise and 1.3gpm at 65f temp.rise [new upgraded units to solve the leaking problem]

2
9.5
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Thermoflow 18KW at 240V Tankless Water Heater Electric, On Demand Instant Hot Water Heater with Self-Modulating Temperature Technology, CSA Certified Wall Mounted

Thermoflow 18KW at 240V Tankless Water Heater Electric

On Demand Instant Hot Water Heater with Self-Modulating Temperature Technology, CSA Certified Wall Mounted

by thermoflow
What We like

Easy Installation and Durable - Compact and wall-mounted design with Six stainless steel heating elements, CSA & UL certified, IPX24 protection, ensuring a long service life (online video installation guidance available)

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Product Features

  • On Demand Endless Hot Water - instant hot water tankless water heater, constant supply of hot water whenever and however long you need, elimiate waiting time and never run out of hot water; Flow rate 2.7GPM at 45F temp.rise and 1.9GPM at 65F temp.rise
  • Self-Modulating Temperature Technology of Germany - use only neccessary energy to heat water to temperature of your needs, also ensure steady output temperature despite of flow fluctuation. LCD digital display shows output temperature, which allow you to adjust temperature in 1-degree increments; temperature range 104-167F
  • Energy and Cost Saving - Heating water only when it's needed with heating efficiency up to 99%, savings of up to 50% on water heating costs; minimal activation flow rate 0.66GPM

Self-modulating temperature technology of germany - use only neccessary energy to heat water to temperature of your needs, also ensure steady output temperature despite of flow fluctuation. lcd digital display shows output temperature, which allow you to adjust temperature in 1-degree increments; temperature range 104-167f Energy and cost saving - heating water only when it's needed with heating efficiency up to 99%, savings of up to 50% on water heating costs; minimal activation flow rate 0.66gpm On demand endless hot water - instant hot water tankless water heater, constant supply of hot water whenever and however long you need, elimiate waiting time and never run out of hot water; flow rate 2.7gpm at 45f temp.rise and 1.9gpm at 65f temp.rise

3
9.4
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EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,White

EcoSmart ECO 27 Electric Tankless Water Heater

27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White

by Ecosmart
What We like

Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.

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Product Features

  • Copper and stainless components designed for efficiency, durability and easy replacement.
  • Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Amperage Draw:113 A
  • Recommended Electrical Panel: 200 Amps
  • Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
  • Required Breaker Quantity: Three 40 Amp Double Pole

Recommended electrical panel: 200 amps Savings of up to 50% on water heating costs. dimensions :17h x 17w x 3.625d inches ;pipes fittings :3/4 inch npt Digital temperature control in 1-degree increments gives users complete control of hot water Required breaker quantity: three 40 amp double pole Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. electrical requirements: 27 kw, 240 volts, (3) 40 required breakers, 112.5 maximum power (amp), (3) 8 required wire.amperage draw:113 a Digital temperature control in 1-degree increments allows control of hot water; activation flow: 0.3 gpm Save up to 12 cubic feet of storage space. Never run out of hot water with an Ecosmart tankless water heater. Copper and stainless components designed for efficiency, durability and easy replacement.

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9
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Stiebel Eltron Tempra Plus 29 kW, tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control

Stiebel Eltron Tempra Plus 29 kW

tankless electric water heater with Self-Modulating Power Technology & Advanced Flow Control

by Stiebel Eltron
What We like

Sleek design fits anywhere

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Product Features

  • Save at least 15-2% on the hot water portion of your electric bill
  • Proven reliability
  • No venting required

Save at least 15-2% on the hot water portion of your electric bill No venting required Proven reliability

5
8.9
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EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology

EcoSmart ECO 11 Electric Tankless Water Heater

13KW at 240 Volts with Patented Self Modulating Technology

by Ecosmart
What We like

ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98

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Product Features

  • Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
  • Patented Self Modulating Technology and design
  • Never run out of hot water with an ECOSMART tankless water heater

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

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8.9
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Atmor AT-905-11TB, Demand Self-Modulating Technology ThermoBoost 10.5kW/240V 1.7 GPM Electric Tankless Water Heater, 11kW/240V, Grey

Atmor AT-905-11TB

Demand Self-Modulating Technology ThermoBoost 10.5kW/240V 1.7 GPM Electric Tankless Water Heater, 11kW/240V, Grey

by Atmor
What We like

Easy to use, set-it-and-forget-it digital temperature control allows you to set temperature in increments of 1f

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Product Features

  • Recommended flow rate 1.7 gpm (gallons per minute). water saver shower head highly recommended for optimal performance
  • Requires 50a, single phase, DP breaker, 6 AWG wire and 240V
  • Can be used as a booster in line with pre-heated water to help fill a void when hot water is needed
  • Electric water heater designed for a single shower

Recommended flow rate 1.7 gpm (gallons per minute). water saver shower head highly recommended for optimal performance Requires 50a, single phase, dp breaker, 6 awg wire and 240v Can be used as a booster in line with pre-heated water to help fill a void when hot water is needed Electric water heater designed for a single shower

7
8.6
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EcoSmart 8 KW Electric Tankless Water Heater, 8 KW at 240 Volts with Patented Self Modulating Technology

EcoSmart 8 KW Electric Tankless Water Heater

8 KW at 240 Volts with Patented Self Modulating Technology

by Ecosmart
What We like

Heating elements are durable and are threaded for easy replacement

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Product Features

  • Activation Flow - 0.3 GPM
  • The product is highly durable
  • The product is easy to use
  • Manufactured in China

Activation flow - 0.3 gpm The product is highly durable Manufactured in china The product is easy to use

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7.6
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Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology

Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology

by Ecosmart
What We like

ECOSMART tankless water heaters are 99.8-percent energy efficient

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Product Features

  • 100 A
  • Patented Self Modulating Technology and design.Activation flow 0.3 GPM
  • 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

Patented self modulating technology and design.activation flow 0.3 gpm Save up to 60-percent on your water heating cost with an Ecosmart electric tankless water heater 100 a Never run out of hot water with an Ecosmart tankless water heater

9
7.6
SCORE
Marey ECO180 18kW 4.4 gpm 220V Self-Modulating Multiple Points Tankless Electric Water Heater for The Whole US Territory, Small, Silver

Marey ECO180 18kW 4.4 gpm 220V Self-Modulating Multiple Points Tankless Electric Water Heater for The Whole US Territory

Small, Silver

by Marey
What We like

Smart technology: easy management and simple adjustments on a LCD panel allows you to program the exact desired water temperature thereby optimizing electricity consumption

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Product Features

  • German-designed with high quality stainless steel water channel and heating chamber
  • The 220V eco 18Kw unit requires (2) 50 amp breakers and must be installed by a professional plumber or electrician to ensure safety and quality
  • Tankless water heaters save energy because they use up to 60% less energy than conventional tank water heaters. As a result, they are cost effective and
  • Recommended for 2 simultaneous Showers (2. 0 gpm each) in hot climates (US Southern regions). in colder regions it is suitable to provide hot water to a shower at 2. 0 gpm

German-designed with high quality stainless steel water channel and heating chamber Tankless water heaters save energy because they use up to 60% less energy than conventional tank water heaters. as a result, they are cost effective and Recommended for 2 simultaneous showers (2. 0 gpm each) in hot climates (us southern regions). in colder regions it is suitable to provide hot water to a shower at 2. 0 gpm The 220v eco 18kw unit requires (2) 50 amp breakers and must be installed by a professional plumber or electrician to ensure safety and quality

10
7.6
SCORE
OUTERDO Immersion Water Heater,Electric Submersible Immersion Water Portable Heater with Stainless-Steel Guard and Digital LCD Thermometer,Great for Bathtub,Inflatable Pool,Fully Immersed While Using

OUTERDO Immersion Water Heater

Electric Submersible Immersion Water Portable Heater with Stainless-Steel Guard and Digital LCD Thermometer, Great for Bathtub, Inflatable Pool, Fully Immersed While Using

by OUTERDO
What We like

Easy to UsePlace immersion heater for water in a container designed to contain boiling water, fill the container with water to full cover the submersible bucket heater shield(including stainless-steel guard and plastic part), plug portable water heater into a properly grounded 120V AC outlet, make sure the portable immersion heater is on, Feel the difference in a few minutes!

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Product Features

  • Widely ApplicationThe Immersion Water Heater can be used in different size container like bucket, basin, bath tub, mini inflatable swimming pool, etc.Unlike the common bucket heater, in appearance, this water heater is lighter and smaller,making it perfect for travels and road trips.
  • Heating Water in MinutesSubmersible electric heater makes water heating more efficiency and boil 5 gallon of the water in minutes, all you need to do is just put the heater in to the water then connect the 120V power supply, easy to use.
  • WarningThe heater needs to be completely immersed in water in working conditionDo not use it for more than 3 hours continuously! Please do not plug the two heaters into the same outlet to avoid fire hazards. Please take out the heater before touching the water!

Widely applicationthe immersion water heater can be used in different size container like bucket, basin, bath tub, mini inflatable swimming pool, etc.unlike the common bucket heater, in appearance, this water heater is lighter and smaller,making it perfect for travels and road trips. Warningthe heater needs to be completely immersed in water in working conditiondo not use it for more than 3 hours continuously! please do not plug the two heaters into the same outlet to avoid fire hazards. please take out the heater before touching the water! Heating water in minutessubmersible electric heater makes water heating more efficiency and boil 5 gallon of the water in minutes, all you need to do is just put the heater in to the water then connect the 120v power supply, easy to use.

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