Whether you’re in Toronto, Vancouver, Halifax, or anywhere in between, having a reliable hot water system is essential—especially when Canadian winters can bring frigid incoming water temperatures. For many homeowners, a tankless electric water heater is the ideal choice. These systems provide endless hot water on demand, save space, and can help reduce your energy bills.
In this guide, we’ll explore the best tankless electric water heaters available in Canada for 2025, what makes them stand out, and how to choose the right one for your home. We’ll also share installation and maintenance tips and discuss an often-overlooked part of your plumbing system that could save you thousands in repair costs down the road.
Why Choose an Electric Tankless Water Heater in Canada?
Electric tankless water heaters are especially appealing for Canadian households without access to natural gas or propane. Here’s why:
- Lower installation costs: No need for venting or gas lines.
- Compact size: Wall-mounted units free up valuable space.
- Energy efficiency: No standby heat loss—water is heated only when needed.
- Precise temperature control: Great for comfort and safety.
- Eco-friendly: When paired with renewable electricity, these units have a very low carbon footprint.
Best Overall: Stiebel Eltron Tempra 24 Plus
The Stiebel Eltron Tempra 24 Plus is a German-engineered electric tankless water heater known for reliability, efficiency, and advanced temperature control. It’s well-suited to Canadian homes, particularly in regions where incoming water temperatures are moderate.
- Flow rate: Up to 4.5 GPM depending on inlet water temperature.
- Advanced Flow Control technology prevents temperature fluctuations.
- Digital temperature display for precise adjustments.
- Quiet, maintenance-friendly design.
Other Top Tankless Electric Water Heaters in Canada
EcoSmart ECO 27
This budget-friendly option offers strong performance, especially in areas with milder winters. It’s compact and has digital temperature controls.
Rheem RTEX-27
Known for easy installation and reliable operation, the RTEX-27 can handle multiple fixtures in warmer provinces and works well as a point-of-use heater in colder regions.
Bosch Tronic 6000C WH27
Offers robust performance with a compact design, making it great for smaller Canadian homes or condos.
Eemax EEM24027
Well-suited for medium-demand households, this model delivers consistent hot water and has a durable build for long-term reliability.
How to Choose the Right Tankless Electric Water Heater in Canada
Canadian homeowners need to consider several factors before purchasing:
- Incoming water temperature: In colder provinces, you’ll need a higher-powered unit to raise the water to a comfortable temperature.
- Flow rate (GPM): Estimate peak household demand—running a shower and dishwasher simultaneously requires more GPM.
- Electrical capacity: Many whole-home units require multiple dedicated breakers and high amperage.
- Usage type: Whole-home vs. point-of-use installations may require different capacities.
Pro Tip: In very cold climates, some homeowners use electric tankless units for point-of-use applications (e.g., a single bathroom) while relying on gas or hybrid systems for whole-home heating.
Installation Considerations
Professional installation is recommended for most Canadian households, as upgrading your electrical panel may be necessary. Important considerations include:
- Correct wire gauge and breaker size per manufacturer requirements.
- Proximity to major water fixtures to reduce heat loss.
- Proper mounting to allow easy access for maintenance.
Maintenance Tips
Electric tankless water heaters generally require less maintenance than gas models, but you should still:
- Flush the unit annually in areas with hard water to prevent scale buildup.
- Check and clean inlet filters periodically.
- Inspect electrical connections annually for safety.
The Overlooked Side of Your Plumbing System
Even the best water heater won’t help if your home’s wastewater system isn’t in good shape. If you have a septic tank, increased hot water use from a tankless system can stress a poorly maintained system, leading to backups, odors, and costly repairs.
Most homeowners don’t think about septic care until a problem arises—but preventative maintenance is far cheaper than emergency fixes.
SEPTIFIX – Protect Your Septic System
SEPTIFIX is the #1 septic tank treatment in Canada and the US. These flushable tablets release oxygen and beneficial bacteria to break down waste, sludge, and grease, while neutralizing foul odors.
Benefits include:
- Removes odors within days.
- Prevents costly backups and pump-outs.
- Safe for all septic systems and eco-friendly.
- Easy to use—just flush one tablet per month.
Pairing your electric tankless water heater with regular SEPTIFIX use ensures your home’s plumbing runs smoothly year-round.
Final Thoughts
For Canadian households in 2025, the Stiebel Eltron Tempra 24 Plus stands out as the best overall tankless electric water heater, offering efficiency, precision, and reliability. The EcoSmart ECO 27, Rheem RTEX-27, Bosch Tronic 6000C WH27, and Eemax EEM24027 are also excellent choices depending on your budget, climate, and hot water needs.
And remember—endless hot water is only part of the comfort equation. Keeping your septic system healthy with SEPTIFIX ensures your plumbing works flawlessly for years to come.
Order SEPTIFIX Today – Keep Your Septic Tank Healthy and Odor-Free
Hot water you can count on, plus a trouble-free septic system—that’s peace of mind for Canadian homeowners.