The total cost of a conventional tank water heater installation in Ontario includes both the unit itself and professional installation. Here is what you can expect to pay in 2024–2025:

• Unit cost (equipment only): $500 – $1,400 depending on size, fuel type, and brand
• Professional installation: $200 – $550
• Total installed cost: $700 – $1,950 for most homes

Note: These are general estimates for Ontario. Your actual cost may vary based on your home's existing setup, local permit requirements, and the complexity of the installation. Contact Constant Home Comfort for a free, accurate quote specific to your home.

Use the table below to compare estimated costs based on tank size and fuel type:

All prices are in Canadian dollars and include estimated unit and installation costs. Prices reflect typical ranges in Ontario and may vary by location and home conditions.

Beyond the purchase price, the long-term operating cost is just as important when choosing between gas and electric. Here is how the two compare for Ontario homeowners:

Gas Conventional Tank Water Heaters

• Higher upfront unit cost than comparable electric models
• Lower monthly operating costs — natural gas is generally less expensive than electricity per unit of heat in Ontario
• Heats water faster, meaning the tank recovers more quickly after heavy use
• Requires proper venting and a gas connection — adds to installation cost if upgrades are needed
• Best for: Homes already on natural gas with higher daily hot water demand

Electric Conventional Tank Water Heaters

• Lower upfront unit cost and simpler installation (no venting required)
• Higher monthly operating costs due to electricity rates in Ontario
• Slower water heating recovery time compared to gas
• Ideal for homes without a gas line or properties where gas installation would be costly
• Best for: Smaller households, cottages, or homes on electric-only utility plans

In most Ontario homes with an existing gas connection, a gas tank water heater will offer better value over its lifetime — even if the initial purchase price is slightly higher. Over a 10–12 year lifespan, the monthly savings on your energy bill can more than offset the cost difference.

At Constant Home Comfort, we carry conventional tank water heaters from trusted brands that have proven themselves in Canadian homes. Here is how the models we supply compare:

Warranty terms and pricing are approximate and subject to change. Ask your Constant Home Comfort advisor for current model-specific details.

Several variables influence how much you will pay for your new unit and its installation:

Tank Size

Larger tanks cost more upfront. A 40-gallon unit is well suited for 1 to 3 people, while a 50 or 60-gallon tank is more appropriate for families of 4 or more. Choosing the right size matters — an undersized tank means you constantly run out of hot water, while an oversized tank wastes energy heating more water than you need.

Fuel Type

Gas units typically cost more than electric to purchase but less to operate. If your home does not currently have a gas hookup, the cost of adding a gas line must also be factored in. Your Constant Home Comfort advisor can assess whether switching fuel types makes financial sense for your situation.

Energy Efficiency Rating

High-efficiency conventional tanks (those with a higher Energy Factor or Uniform Energy Factor rating) cost more upfront but use less energy to heat and maintain water temperature, saving you money month after month. If you plan to stay in your home long-term, the investment in a more efficient model often pays for itself within a few years.

Installation Complexity

A straightforward swap of an existing tank for a same-size, same-fuel model is the most affordable installation scenario. Costs increase when the job requires upgrading venting, rerouting pipes, installing a new gas line, updating electrical wiring, or obtaining a building permit. Our technicians will identify all requirements upfront so there are no surprises.

Brand and Warranty

Premium brands with longer warranty coverage typically come at a higher price point. However, a 10-year warranty versus a 6-year warranty can mean thousands of dollars in protected coverage — making the premium often worth it for long-term peace of mind.

A common question we hear from Ontario homeowners is whether to stick with a conventional tank or upgrade to a tankless system. Here is a practical cost comparison:

• Conventional Tank — Total installed cost: $700 – $1,950. Lower upfront investment, simpler installation, and works well for households with steady, predictable hot water needs.
• Tankless Water Heater — Total installed cost: $2,500 – $5,000+. Higher upfront cost but significantly more energy-efficient, delivering hot water on demand and eliminating standby heat loss. Can reduce water heating costs by 20–35% annually.

For budget-conscious homeowners or those planning to sell in the near future, a conventional tank offers excellent value. For homeowners focused on long-term energy savings or households with high hot water demand, a tankless system may deliver a better return over time. Our team will help you evaluate both options during your free consultation.

At Constant Home Comfort, we believe the cost of a water heater should not stand between you and a comfortable home. That is why we offer flexible payment solutions and help you access every rebate you qualify for:

• 0% Interest Financing — Spread the cost of your new water heater with $0 down and 0% interest financing plans available O.A.C.
• Government Rebate Programs — Depending on the model and your home's eligibility, you may qualify for rebates through provincial and utility-backed programs in Ontario. We handle all the paperwork on your behalf.
• Rental Program — Not ready to purchase? Ask about our water heater rental program, which covers maintenance and offers a low monthly fee.

Constant Home Comfort supplies and installs conventional tank water heaters across Ontario, with certified technicians serving:

• Greater Toronto Area — Toronto, Markham, Richmond Hill, Vaughan, Mississauga, Scarborough, Newmarket, Etobicoke, and surrounding communities
• Hamilton and Burlington
• Ottawa and Kanata
• London and Waterloo
• Barrie and Durham Region

Call us anytime at 1-888-675-5907 for a free quote on the spot. We are available 24/7 for service and sales — and we will make sure you get the best price, the right unit, and a seamless installation.

How much does it cost to replace a water heater in Ontario?

For a conventional tank water heater, most Ontario homeowners pay between $700 and $1,950 fully installed, depending on tank size, fuel type, brand, and the complexity of the installation. Call us for a free, same-day quote.

Is a 40-gallon or 50-gallon water heater better for my family?

A 40-gallon tank is typically sufficient for 1 to 3 people. Families of 3 to 5 people are generally better served by a 50-gallon unit, which provides a larger hot water reserve and faster recovery. Our team will assess your household's usage and recommend the right size during your free consultation.

Do I need a permit to replace my water heater in Ontario?

In Ontario, replacing a water heater often requires a permit, particularly when there are changes to gas lines, venting, or electrical connections. Constant Home Comfort handles all necessary permits and ensures every installation meets Ontario Building Code requirements.

Can I get financing on a new conventional tank water heater?

Yes. Constant Home Comfort offers 0% interest financing plans with $0 down, available O.A.C. Ask your advisor about current financing promotions when you call for your free quote.

How long will my new conventional tank water heater last?

With proper installation and regular maintenance, a quality conventional tank water heater typically lasts 10 to 15 years. Enrolling in an annual maintenance plan with Constant Home Comfort helps extend its lifespan and keeps your warranty valid.