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5 Best Tankless Electric Water Heater Canadas of 2025

Last Updated - 2025/07/22

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Rheem

Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey

Rheem

CA$650.00

More Details
Main highlights
- Threaded for easy replacement, simple installation, digital temperature display
- Simple installation – bottom 3/4 inch NPT water connections
- Most advanced self-modulation, adjust power to meet hot water demand
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
CA$650.00
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Stiebel Eltron

Stiebel Eltron Tankless Heater – Tempra 12 Plus – Electric, On Demand Hot Water, Eco, White

Stiebel Eltron

CA$645.21

More Details
Main highlights
- WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase
- TEMPRA 12 PLUS – This specific model is 12kW, 240V, requires a min recommended electric service of 100 A, and offers an output water temperature of 68° to 140°F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
- SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
- EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
- CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
CA$645.21
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

thermomate

thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise, Side Connections

thermomate

CA$349.99

More Details
Main highlights
- [Save Money and Space] - Self-modulating technology auto regulating the amount of energy required to heat water by continuously detecting water temperature and flow rate with 99% heating efficiency, saving up to 60% on water heating cost comparing to traditional tank water heater. Side water connection and wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces
- [Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
- [Leak Proof & Maintenance Free] - The first to use cast aluminum heating chamber, Heating element separated from water lines to prevent water leaking and scale & corrosion on heating element, ensuring high heating efficiency and extending usage life span
- [Instant Endless Hot Water] - Provide consistent hot water wherever and whenever you need it. 24 hours standby. 11kW powerful heating support up to 3 faucets and large 2.15GPM at 35°F temperature rise. Max temperture up to 131°F. Requires Double Pole 50Amp breaker
- [Installation] - 11 kilowatts at 240V draws max 46amp, 1/2” NPT male ports, 6AWG wire to 50AMP Double-pole breaker, ideal for providing hot water for a bathroom, small sink, office break room and other point-of-use or low-flow applications
CA$349.99
4
Best Value
39% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Ranein
39% Off

Electric Tankless Water Heater, 14kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

Ranein

CA$217.92

CA$359.00
(39% Off)

More Details
Main highlights
- 【Simple】It features knob controls and an LED display. With an adjustment range from 86°F to 131°F in 1°F increments, you simply set the temperature and enjoy stable and ample hot water
- 【Save】Compared to tank-type water heaters, it doesn't require preheating. There's no energy consumption when not in use. It saves 60% of heating costs. Additionally, it's more compact and can be installed anywhere
- 【Safe】Heating elements are separated from water to prevent scale buildup. It has features like leakage protection, overheat protection, and automatic shutdown to ensure safety during use
- 【Powerful】Its thermal efficiency reaches up to 99%. With a flow rate of up to 3.6GPM, it's suitable for 2-3 usage points throughout the entire house. No waiting for preheating. Provides endless ample hot water
- 【Note】Make sure this water heater is sized for your hot water needs: 14 kW; 240 volts, circuit breaker required 1 x 60 amps; unit dimensions 10.7" x 14.25" x 3.22"; water connection 1/2" NPT.
CA$217.92
CA$359.00 (39% Off)
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

thermomate

Tankless Water Heater Electric 18kW 208~240 Volt, ThermoMate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Whole House Shower, 76A Gray

thermomate

CA$559.99

More Details
Main highlights
- [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 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
- [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.
- [Instant Unlimited Hot Water] - 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. Requires 80Amp breaker (2 Sets of Double-pole 40AMP Breakers)
- [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 208 ~ 240V (adjustable) 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 3/4" NPT.
CA$559.99

5 Best Tankless Electric Water Heater Canadas of 2025

Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey

Stiebel Eltron Tankless Heater – Tempra 12 Plus – Electric, On Demand Hot Water, Eco, White

thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise, Side Connections

Electric Tankless Water Heater, 14kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

Tankless Water Heater Electric 18kW 208~240 Volt, ThermoMate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Whole House Shower, 76A Gray

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