Top 6 Best Electric Tankless Water Heater Whole House
of December 2024
1
Best Choice
AIRTHEREAL
AIRTHEREAL
Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series
10
Exceptional
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2
Best Value
EcoSmart
EcoSmart
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
9.9
Exceptional
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3
Rheem
Rheem
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
9.8
Exceptional
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4
EcoSmart
EcoSmart
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
9.7
Exceptional
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5
Rheem
Rheem
Rheem 18kW 240V Tankless Electric Water Heater
9.6
Exceptional
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6
Stiebel Eltron
Stiebel Eltron
Stiebel Eltron Tankless Heater Tempra 36 Plus Electric, On Demand Hot Water, Eco, White
9.5
Excellent
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7
thermomate
thermomate
Tankless Water Heater Electric 18kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Whole House Shower, 76A GRAY
9.4
Excellent
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8
Rheem
Rheem
Rheem 240V 3 Heating Chambers RTEX-27 Residential Tankless Water Heater, Gray
9.3
Excellent
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9
EcoSmart
EcoSmart
EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
9.2
Excellent
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10
ECOTOUCH
ECOTOUCH
Electric Tankless Water Heater, ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House ECO180B Black
9.1
Excellent
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About Electric Tankless Water Heater Whole House
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Airthereal Electric Tankless Water Heater 18kW, 240Volts - Endless On-Demand Hot Water - Self Modulates to Save Energy Use - Small Enough to Install Anywhere - for 2 Showers, Evening Tide series
Endless Hot Water Imagine you are the last one in your family to take a shower before heading out for the day. You turn on the faucet and the water is freezing cold. Too bad you dont have an Airthereal Electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank.. Save Space That water heater in the basement or utility closet takes up a ton of space. This wall-mounted water heater uses 90 less space than a traditional hot water heater with a tank.. Save Energy Water is only heated when you need it, not stored in a hot water tank. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50 on water heating costs compared to a typical tank water heater.. Important Note In order to install 18kW Electric Tankless Water Heater it requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x 8AWG2 wires. Please check to confirm that your breaker panel meet these specifications.. Safe To Use With high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water to use on your schedule. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion..
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
Endless on-Demand Hot Water Consistent hot water when you need it that never runs out Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature. Save Space EcoSmart tankless electric water heaters are 90 smaller than traditional tank heaters may be installed on wall or at point of use Dimensions 17 x 17 x 3.75 inches . Save Energy EcoSmart tankless electric water heaters are 99 thermal energy efficient Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50 in water heating costs according to the Department of Energy. EcoSmart ECO 27 Sizing Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature refer to the sizing guide to select the proper solution. Warranty and Certifications Limited Lifetime Warranty on electronics, exchanger and element UL-499 certified ETL Listed. Required Breaker Quantity Three 40 Amp Double Pole. Recommended Electrical Panel 200 Amps. NEVER run out of hot water with an ECOSMART tankless water heater.. Save up to 12 cubic feet of storage space.. Digital temperature control in 1-degree increments gives users complete control of hot water.
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
ONOFF Dial Control with adjustable digital temperature display. Self-modulating power control. 24kW Model Flow Rate up to 5.9 GPM for RTEX-24. Bottom 34 NPT water connections. On demand, consistent and continuous hot water.
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
Lifetime warranty. Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater. Never run out of hot water with an ECOSMART tankless water heater. Patented Self Modulating Technology and design.Activation flow 0.3 GPM. ECOSMART tankless water heaters are 99.8-percent energy efficient. 100 A.
Rheem 18kW 240V Tankless Electric Water Heater
External digital thermostatic control with LED display 1 degree accuracy. Most advanced self-modulation, adjust power to meet hot water demand. Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM. Simple installation bottom 34 inch NPT water connections. Threaded for easy replacement, simple installation, digital temperature display.
Stiebel Eltron Tankless Heater Tempra 36 Plus Electric, On Demand Hot Water, Eco, White
On-demand, continuous and unlimited supply of hot water. Sleek design saves space and no venting required. Electronic switch activated for virtually silent operation. Phase- single 60 Hz. Voltage- 208 V. Wattage- 27 kW. Copper sheathed heating element housed in copper cylinder. 7 Years leakage and 3 years parts complete warranty.
Tankless Water Heater Electric 18kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Whole House Shower, 76A GRAY
Instant Unlimited Hot Water - REQUIRE 2 x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Save Money and Space - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8 efficient, saving up to 60 on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.. Smart Operation - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1 increment from 80F to 140F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.. Easy Installation Safety Protection - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection. NOTE - Make sure this water heater is the correct size for your hot water need 18kW at 240V draw max 76amp Required breaker 2 x Double-POLE 40AMP Wire gauge 2 x 8AWG Unit size 17.12 x 13.12 x 3.12 Water connection 34 NPT. 2-year limite warranty and 247 customer support services..
Rheem 240V 3 Heating Chambers RTEX-27 Residential Tankless Water Heater, Gray
External digital thermostatic control with LED display 1 degree accuracy. Most advanced self-modulation, adjust power to meet hot water demand. Durable Copper immersion three heating elements, field Serviceable. Simple installation bottom 34 inch NPT water connections. Threaded for easy replacement, simple installation, digital temperature display.
EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology
The product is highly durable. The product is easy to use. Manufactured in China. Amperage amps 75. Activation flow 0. 3 GPM. Flow Rate 35 F Rise gallonsmin 3. 51 gal USmin. The product works and is compatible with 2 X 40 AMP DP breakers and 2 X 8 AWG wire. Lifetime warranty for residential use. Save up to 60 on your water heating costs with the most advanced, self modulating technology available. Never run out of hot water with an ECOSMART tankless water heater.. Save up to 12 cubic feet of storage space.. Digital temperature control in 1-degree increments gives users complete control of hot water.
Electric Tankless Water Heater, ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House ECO180B Black
INSTANT SUFFICIENT HOT WATER With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120 or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.. SELF MODULATION INSTANT WATER HEATERThe electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98 saves considerable electric charge for you.. CONVENIENT USEThe electric tankless water heater 18kW comes with digital display touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you neednt go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.. SAFE and DURABLENewly updated and applied with multiple protections, such as leakage protection, over heating protection and auto stop. Every piece electric tankless water heater ECO180B goes through strict tests to ensure 100 safety and it is listed by ETL and qualifies for UL. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.. POINT of USE WATER HEATERThe sleek tankless water heater ECO180B is compact as shoes box, making it possible to install anywhere point of use to avoid waste, ideal for shower, kitchen, bar, school and hair salon. Please verify it is the right size for you 18kW at 240Vonly dimensions 12.22 W x 17.25 H x 4.02 D plumbing connections 34 NPT. In order to install 18kW Tankless Water Heater it would requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG2 wires with Grounding..