Electric vs Gas Water Heater Montreal: Which Saves More in Quebec?
Short Answer
For most Montreal homeowners, electric is the clear winner. Quebec’s Hydro-Québec electricity rates are the lowest in North America at approximately 7.8¢/kWh, making an electric water heater 40 – 60% cheaper to operate annually than gas. An electric tank costs $300 – $700 (unit) with $300 – $800 for water heater installation. A gas unit costs $700 – $1,500 with higher installation fees. Gas only makes sense in specific situations: very high hot water demand, homes already on the Énergir network, or dual-energy (Rate DT) setups.
Water heating accounts for roughly 20% of your home energy bill. Choosing the right fuel type in Quebec saves hundreds per year.
If you are shopping for a water heater Montreal replacement, the electric versus gas question is the first decision to make — and in Quebec, it is a very different calculation than anywhere else in Canada. While homeowners in Ontario, Alberta, and BC often lean toward gas for lower operating costs, Quebec’s unique energy landscape flips the equation completely. Hydro-Québec provides some of the cheapest electricity on the continent, while natural gas (supplied by Énergir) carries additional delivery, supply, and carbon charges.
This guide compares every factor: purchase price, water heater installation cost, annual operating cost, efficiency, lifespan, maintenance, environmental impact, and the specific scenarios where one beats the other. Whether you need a simple tank replacement or a full upgrade, this is the information you need before calling for water heater service.
Head-to-Head: Electric vs Gas Water Heater Comparison
Why Quebec Is Different: The Hydro-Québec Advantage
The electric vs gas debate works differently here than anywhere else in Canada. Here is why:
~7.8¢/kWh
Quebec Electricity Rate
Hydro-Québec Rate D is the lowest residential electricity rate in North America. The first 40 kWh per day is billed at the lower tier. Over 99% of Quebec’s electricity is from renewable hydroelectric sources.
~17-18¢/kWh
Ontario Electricity Rate
More than double Quebec’s rate. This is why Ontario homeowners often choose gas — the math is completely different. Quebec’s advantage makes electric water heating the most affordable option by far.
Variable
Énergir Gas Rate
Natural gas rates in Quebec fluctuate monthly and include supply, distribution, transportation, and RNG socialisation charges. For most households, the all-in cost makes gas water heating more expensive than electric in Quebec.
The Quebec math: A standard 60-gallon electric water heater uses roughly 4,000 – 4,500 kWh per year. At Quebec’s average rate of ~7.8¢/kWh, that is approximately $310 – $350 per year. An equivalent gas water heater with 60 – 70% efficiency costs approximately $450 – $700 per year in natural gas. The electric advantage grows if you factor in the gas connection monthly fixed charge from Énergir (~$16 – $20/month just to be connected). If your water heater is the only gas appliance in the home, switching to electric eliminates that fixed charge entirely.
Water Heater Installation Costs in Montreal (2026)
Here is what Montreal homeowners pay for water heater installation in 2026, broken down by type:
Why gas installation costs more: Gas water heater installation requires connecting to the Énergir gas line (or running a new line), installing proper venting (exhaust flue through the roof or direct-vent through the wall), and ensuring combustion air supply. Electric installation only requires a 240V dedicated circuit and plumbing connections — no venting, no gas line, no combustion concerns.
Gas to electric conversion: If you are switching from gas to electric, additional costs include installing a new 240V 30-amp circuit from your electrical panel to the water heater location ($300 – $800), capping the gas line, and removing the existing venting. Many Montreal homeowners make this switch when their gas water heater fails, especially if it was their only gas appliance. Eliminating the Énergir fixed monthly charge saves an additional $190 – $240 per year. Contact a water heater Montreal specialist for a conversion quote.
10-Year Total Cost of Ownership: The Real Comparison
Purchase price alone does not tell the full story. Here is the true 10-year cost when you factor in purchase, water heater installation, and annual energy costs for a typical Montreal family of four:
Electric Tank (60 gal)
Unit + install: $1,000 (avg)
Annual energy: $325
10 yrs energy: $3,250
Maintenance: ~$200 (anode rod 1×)
10-Year Total: ~$4,450
Gas Tank (60 gal)
Unit + install: $2,000 (avg)
Annual energy: $550
10 yrs energy: $5,500
Maintenance: ~$500 (annual inspection + anode)
10-Year Total: ~$8,000
The electric water heater saves approximately $3,550 over 10 years compared to gas in Quebec — and that gap widens if natural gas prices rise. Electric also has a longer average lifespan (10 – 15 years vs 8 – 12 for gas), potentially stretching the savings even further. For homeowners considering a tankless water heater, the savings math shifts further toward electric in Quebec because tankless units amplify the per-unit energy cost difference.
When Gas Still Makes Sense in Montreal
Despite electric’s overwhelming cost advantage, there are specific situations where a gas water heater is the better choice:
Very high hot water demand: Large families (5+ people), homes with multiple bathrooms in simultaneous use, or households with high-demand appliances (soaker tub, rain shower, multiple showers running at once). Gas water heaters recover 35 – 45 gallons per hour compared to 20 – 25 for electric. If you regularly run out of hot water, a gas unit or tankless system delivers faster recovery.
Dual-energy system (Rate DT): If your home uses Hydro-Québec’s Rate DT (dual-energy with gas heating during cold spells), you are already paying the Énergir fixed charge. Adding gas water heating to an existing gas furnace setup adds minimal incremental cost and lets you take advantage of gas’s faster recovery rate.
Electrical panel limitations: Older Montreal homes (pre-1970) sometimes have 100-amp electrical panels that cannot support a large electric water heater plus existing loads without an expensive panel upgrade ($1,500 – $3,000+). If you already have a gas line, keeping gas avoids this cost. A whole-home electric tankless unit requires 100 – 200 amps on its own, making it impractical without a major panel upgrade.
Power outage resilience: Gas water heaters with a standing pilot or battery-powered ignition continue heating water during power outages. In Montreal’s winter ice storms, hot water without electricity is a genuine comfort advantage. Electric water heaters stop completely during outages.
Rental replacement: If you are renting a gas water heater (common in Quebec at $10 – $25/month), replacing with the same type avoids conversion costs. However, when the rental contract expires, switching to a purchased electric unit almost always saves money long-term.
Need Help Choosing? We Install Both.
CMMTQ-licensed plumbers. Electric and gas water heater installation. Free assessment.
Tankless vs Tank: A Quick Note for Quebec
The electric vs gas question also applies to tankless (on-demand) water heaters. In Quebec, an electric tankless unit is cheaper to operate than a gas tankless, but there is a significant caveat: whole-home electric tankless systems require enormous electrical capacity (often 100+ amps on a dedicated circuit). Most Montreal homes need an electrical panel upgrade to accommodate this, which adds $1,500 – $3,000 to the project.
For homes with adequate electrical panels (200-amp service), an electric tankless unit paired with Quebec’s low electricity rates provides the lowest possible long-term operating cost. For homes on a gas line with limited electrical capacity, a gas condensing tankless (80 – 96% efficiency) delivers endless hot water with fast recovery while avoiding the panel upgrade cost.
The best approach: have your plumber assess both your electrical panel capacity and gas availability during the water heater service consultation. The right answer depends on your specific home infrastructure, not general rules.
Environmental Factor: Quebec’s Green Grid
Quebec’s electrical grid is over 99% renewable hydroelectric power. An electric water heater running on Hydro-Québec electricity produces virtually zero greenhouse gas emissions. A gas water heater burning natural gas produces approximately 2 tonnes of CO₂ per year.
Quebec has also begun restricting new gas installations in new residential construction as part of the province’s energy transition. While existing gas systems can be maintained and replaced, the regulatory trend strongly favours electrification. Choosing electric for your water heater installation aligns with both Quebec’s energy direction and your carbon footprint goals.
Énergir is responding by increasing its renewable natural gas (RNG) content (5% in 2025 – 2026, rising to 10% by 2030 – 2031), but even with this mix, a gas appliance still produces significantly more emissions than electric in Quebec. Homeowners who prioritise sustainability should choose electric or consider a heat pump water heater, which uses 60 – 70% less electricity than a standard electric tank.
5 Things to Discuss With Your Plumber Before Installation
Household size and demand: A 40-gallon tank suits 1 – 2 people, 60-gallon for 3 – 4, and 80-gallon or tankless for 5+. Undersizing means cold showers; oversizing wastes energy heating water you do not use.
Electrical panel capacity: Check if your panel can support a 30-amp 240V circuit (standard electric tank) or 100+ amps (electric tankless). Your plumber or electrician can verify this during the assessment.
Existing fuel type: Replacing with the same fuel type (electric to electric, gas to gas) is cheapest. Switching from gas to electric is a worthwhile investment if it eliminates your only gas appliance. Switching electric to gas rarely makes financial sense in Quebec.
Location and space: Electric tanks can go anywhere with a circuit and drain pan. Gas tanks need proximity to venting (exterior wall or chimney). Tankless units mount on walls and free up floor space — excellent for small Montreal condos and triplexes.
Montreal hard water: Montreal’s water has moderate hardness (~116 PPM). Both electric and gas tanks accumulate sediment that reduces efficiency and shortens lifespan. Annual flushing is essential. Regular plumbing maintenance includes water heater flushing. A leaking water heater often means corrosion from years of unflushed sediment.
Electric vs Gas Water Heater Montreal FAQ
How much does water heater installation cost in Montreal?
An electric tank water heater costs $600 – $1,500 fully installed. A gas tank water heater costs $1,200 – $3,000 installed. Tankless units range from $1,600 – $6,500 installed depending on fuel type and capacity. Labour typically runs $300 – $800 for electric and $500 – $1,500 for gas due to venting requirements.
Is electric or gas cheaper to operate in Quebec?
Electric is significantly cheaper — typically $200 – $350 per year compared to $400 – $700 for gas. Quebec has the lowest electricity rates in North America thanks to Hydro-Québec’s hydroelectric grid. This is the opposite of most other provinces where gas is often cheaper to run.
Should I switch from gas to electric in Montreal?
If your water heater is the only gas appliance in your home, switching to electric when it fails is an excellent investment. The conversion costs $1,100 – $2,700 (including new 240V circuit), but you eliminate the Énergir fixed monthly charge ($190 – $240/year) plus save on the energy cost difference. Most homeowners recoup the conversion cost within 3 – 4 years.
How long does a water heater last?
Electric tank water heaters last 10 – 15 years on average. Gas tanks last 8 – 12 years (the burner and venting components wear faster). Tankless units (both types) can last 15 – 20 years with proper maintenance. Signs of failure include rusty water, rumbling noises, leaking from the base, inconsistent temperature, and water that takes longer to heat than usual.
What size water heater do I need?
For a Montreal household: 1 – 2 people need 30 – 40 gallons, 3 – 4 people need 40 – 60 gallons, and 5+ people need 60 – 80 gallons or a tankless system. Consider your peak hour demand — the number of showers, dishwasher loads, and laundry cycles happening simultaneously in the morning or evening.
Is renting a water heater worth it in Quebec?
Renting costs $10 – $25/month ($120 – $300/year) and includes maintenance. Over 10 years, you pay $1,200 – $3,000 in rent alone. Purchasing an electric tank ($600 – $1,500 installed) with annual maintenance ($50 – $100) costs far less long-term. Renting only makes sense if you cannot pay the upfront purchase cost or plan to sell the property within 2 – 3 years.
Do I need a permit for water heater installation in Montreal?
In Quebec, water heater installation must be done by a CMMTQ-licensed plumber. Gas installations additionally require compliance with the RBQ gas code. A municipal permit is generally not required for a like-for-like replacement but may be needed for new gas venting or major electrical work. Your plumber handles all code compliance.
What is a heat pump water heater and is it worth it?
A heat pump water heater extracts heat from surrounding air to heat water, using 60 – 70% less electricity than a standard electric tank. They cost $2,000 – $4,500 installed but offer the lowest operating cost of any option (roughly $100 – $150/year in Quebec). Best for homes with a warm, unfinished basement or utility room with adequate airflow. Not ideal for cold, confined spaces.
Can I install a water heater myself?
No. In Quebec, water heater installation must be done by a licensed professional. DIY installation voids the manufacturer warranty, may not meet building code, and creates serious safety risks (electrical shock for electric, carbon monoxide for gas). Insurance claims may be denied if the installation was not performed by a licensed plumber. The cost of professional water heater service is well worth the safety and compliance it provides.
Where can I find water heater installation near me in Montreal?
Plumbing Montreal provides water heater installation, repair, and maintenance across all boroughs including Downtown, West Island, East End, Laval, and South Shore. Our CMMTQ-licensed plumbers install electric, gas, and tankless water heaters and can advise on the best option for your home and budget. Call (514) 316-9154 to schedule your assessment.
Ready for Hot Water That Costs Less?
Licensed CMMTQ plumbers – Electric, gas, and tankless options – Free assessment
Serving all Montreal boroughs – Downtown, West Island, East End, Laval, South Shore
Related Water Heater Services:
Water Heater Services |
Electric Water Heater |
Gas Water Heater |
Tankless Water Heater |
Plumbing Maintenance |
Leaking Pipe Repair |
Emergency Plumber