Advertising Disclosure

5 Best Electric Tankless Water Heaters of 2025

Last Updated - 2025/07/16

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 RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Rheem

CA$780.00

More Details
Main highlights
- Self-modulating power control
- On demand, consistent and continuous hot water
- ON/OFF Dial Control with adjustable digital temperature display
- Bottom 3/4" NPT water connections
- 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
CA$780.00
2

✖
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
3
Best Value
20% Off

✖
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
20% Off

Tankless Water Heater Electric 14kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Sink & Shower, 58A Gray

thermomate

CA$319.99

CA$399.99
(20% Off)

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 86°F to 131°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 60Amp Double-pole breaker
- [Installation] - 14 kilowatts at 240V draws max 58amp, 1/2” NPT male ports, 6AWG wire to 60AMP 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
- [Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
CA$319.99
CA$399.99 (20% Off)
4

✖
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

Ranein Electric Tankless Water Heater, 18kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving

Ranein

CA$419.00

More Details
Main highlights
- SIMPLE: The endless hot water heater electric features knob controls and an LED display. With an adjustment range from 86°F to 131°F in 1°F increments, just simply set the temperature and enjoy stable and ample hot water.
- SAVE: Compared to tank-type water heaters, electric tankless water heater don'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: The instant electric tankless water heater is applied with multiple protections, like leakage protection, overheating protection, and drop test, damp proof, every unit electric tankless water heater goes through strict tests to ensure 100% safety and it is listed by CSA.
- POWERFUL: This electric water heater's on-demand thermal efficiency reaches up to 99%. With a flow rate of up to 4.3GPM, it's suitable for 2-3 usage points throughout the house. No waiting for preheating. Provides endless ample hot water.
- NOTE: Make sure this water heater tankless is sized for your hot water needs: 18 kW; 240 volts; circuit breaker required 2 x bipolar 40 amps; unit dimensions 13.8" x 3.1" x 18.7"; water connection 3/4" NPT.
CA$419.00
5
18% Off

✖
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
18% Off

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$447.99

CA$549.99
(18% Off)

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$447.99
CA$549.99 (18% Off)

5 Best Electric Tankless Water Heaters of 2025

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

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

Tankless Water Heater Electric 14kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Sink & Shower, 58A Gray

Ranein Electric Tankless Water Heater, 18kW 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

You may also like...

GEESEN Tankless Water Heater Electric 27kW 240V, Instant On Demand Endless Hot Water Heater with Digital Temperature Display Point of Use for Residential Whole House Shower, ETL Certified

Rheem RETEX-06 6 kW 1.0 GPM Point-Of-Use Electric Tankless Water Heater

Rheem 11kW 240V Tankless Electric Water Heater

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, Gray

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

Tankless Water Heater Electric 110V, 3000W Instant Electric Water Heater, Under Sink Water Heater with Digital Display, On Demand Hot Water heater Electric for Kitchen Bathroom Washin

VEVOR Instant Water Heater, 8kw On Demand Electric Tankless Water Boiler, Digital Temperature Display & Easy Installation & 24-Hour Water Supply, for Kitchen Bathroom Shower Mall Salon ETL Listed

3000W Tankless Water Heater, Instant Electric Water Heater, On Demand Mini Water Heater, Stainless Steel Heating Elements, LCD Display, in-line Under Sink for Kitchen Bathroom, White

Electric Tankless Water Heater 6000W 220V Instant Hot Water Heater with Handheld Shower Head and Hose Set, LED Touch Screen Switch Adjustable Temperature Water Heater for Bathroom Kitchen

VINABUKS Electric on Demand 120V Water Heaters 1.5 KW Safty Plug Point of Use Boiler Wash Under Sink on with Digital Temperature Control Smart Control(10L)

Sign up and get exclusive special deals