Short answer: for most Peel Region homes already connected to natural gas, a gas water heater is the cheapest to run and recovers fastest for busy families. Electric models cost less to install and suit condos, smaller homes, and houses without a gas line. Solar systems have the lowest operating cost but the highest upfront price, and in Ontario they work best as a pre heat system paired with a gas or electric backup.
1. Electric water heaters: pros, cons, and real costs
2. Gas water heaters: tanks and tankless
3. Solar water heaters: the honest Ontario picture
4. Side by side cost comparison for 2026
Choosing a water heater used to mean one decision: big tank or bigger tank. Today, Peel Region homeowners are choosing between three genuinely different systems, and the right answer depends less on the sticker price and more on how your household actually uses hot water. A family of five running back to back showers before school lives a very different hot water life than a couple in a Square One condo.
This guide compares electric, gas, and solar water heaters with the numbers that matter in Ontario: installed cost, monthly operating cost, recovery speed, and lifespan. All pricing reflects what we see on real installations across Mississauga, Brampton, and Caledon in 2026.
Electric Water Heaters: Simple, Safe, and Cheapest to Install
An electric water heater is the simplest system of the three. There is no burner, no gas line, no venting, and no combustion. Two heating elements inside the tank warm the water, and that is the whole story. That simplicity is exactly why electric models remain the default choice for condos, townhomes without gas service, and homeowners who want the lowest upfront cost.
Where electric wins
Installation is the cheapest of any water heater type, typically 1,400 to 2,600 dollars installed for a standard 40 to 60 gallon tank in Peel Region. Because there is no venting requirement, an electric tank can go almost anywhere: a closet, a corner of a condo utility room, a tight basement. With no combustion, there is no carbon monoxide risk and no annual burner maintenance. Newer heat pump water heaters push electric efficiency even further, cutting electricity use by half or more compared to a standard element tank.
Where electric falls short
Ontario electricity costs significantly more per unit of heat than natural gas, so a standard electric tank usually costs 45 to 75 dollars per month to run for a typical family, roughly double a gas tank. Recovery is also slower. After the tank empties, an electric model can take 60 to 90 minutes to fully reheat, which is where large families feel the pinch on busy mornings.
Best fit
Condos and smaller homes, households of one to three people, homes without a natural gas line, and anyone prioritizing low upfront cost and simple maintenance.
Gas Water Heaters: Fast Recovery and the Lowest Operating Cost in Ontario
Most detached homes in Mississauga and Brampton already have natural gas service, and that single fact makes gas the practical winner for the majority of our customers. Natural gas in Ontario delivers heat at a fraction of the cost of electricity, and a gas burner reheats a tank two to three times faster than electric elements.
Gas tank models
A conventional gas tank runs 1,800 to 3,200 dollars installed, and typical operating costs land between 20 and 40 dollars per month. Recovery after a full drain is usually 30 to 45 minutes. For a family of four or five with overlapping showers, laundry, and a dishwasher, that recovery speed is the difference between a comfortable morning and a cold one.
Gas tankless models
A tankless unit like the Navien shown above heats water only when a tap opens, so there is no tank of hot water sitting around losing heat all day. Endless hot water, a wall mounted footprint about the size of a carry on suitcase, and a lifespan of 20 years or more make tankless the premium pick. Expect 3,500 to 5,500 dollars installed in Peel Region, with monthly operating costs often 10 to 20 percent below a comparable gas tank. Tankless units are ENERGY STAR rated and free up real floor space in the mechanical room.
Where gas falls short
Higher upfront cost than electric, and installation requires a gas line, proper venting, and a TSSA licensed technician. Homes without existing gas service face a meaningful cost to bring a line in, which usually erases the operating savings for years.
Best fit
Larger families, homes already connected to natural gas, and anyone who wants fast recovery, low monthly bills, or the endless hot water of a tankless system.
Solar Water Heaters: Lowest Running Cost, Longest Payback
A solar thermal system uses roof mounted collectors to capture heat from sunlight and transfer it to your water. On a sunny July day in Peel Region, a well sized system can cover most of a household's hot water demand at essentially zero fuel cost.
Here is the honest Ontario picture, though, because this is where a lot of online guides oversell. Our winters are cold and our December days are short, so a solar system in the GTA is a pre heat system, not a standalone one. Every solar installation here needs a gas or electric backup for cloudy stretches and winter demand. Realistically, solar covers 40 to 60 percent of annual water heating in southern Ontario, not 100 percent.
The numbers
Installed cost typically runs 6,000 to 10,000 dollars including the backup integration. Against a gas baseline of 25 to 40 dollars per month, the payback period commonly stretches past 15 years. Against an electric baseline the math improves considerably, which is why solar makes the most sense for rural properties without gas service. Collectors themselves often last 20 to 25 years with minimal maintenance.
Best fit
Long term homeowners with a south facing, unshaded roof, households currently heating water with electricity, and eco focused families who value the carbon reduction as part of the return, not just the dollars. Rebate programs for renewables change frequently, so ask us what is currently available before you budget.
For federal efficiency ratings and rebate details, see the ENERGY STAR Canada water heater guidance.
Electric vs Gas vs Solar: 2026 Cost Comparison
Here is how the three systems compare on the numbers Peel Region homeowners ask us about most. Figures reflect typical residential installations; your quote depends on tank size, venting, and site conditions.
| Factor | Electric Tank | Gas Tank / Tankless | Solar + Backup |
|---|---|---|---|
| Installed cost | $1,400 to $2,600 | $1,800 to $3,200 tank $3,500 to $5,500 tankless | $6,000 to $10,000+ |
| Monthly operating cost | $45 to $75 | $20 to $40 | $10 to $25 (backup fuel) |
| Recovery speed | Slow (60 to 90 min) | Fast (30 to 45 min) or endless (tankless) | Depends on backup |
| Typical lifespan | 10 to 15 years | 8 to 12 years tank 20+ years tankless | 20 to 25 years (collectors) |
| Needs gas line | No | Yes | Only if gas backup |
| Best for | Condos, small homes, no gas service | Families, gas connected homes | Long term owners, electric baseline homes |
How to Choose: Three Questions That Decide It
1. Do you already have natural gas?
If yes, gas is almost always the lowest total cost of ownership in Ontario. If no, compare an electric or heat pump water heater against the cost of bringing a gas line in before assuming gas wins.
2. How does your household use hot water?
Back to back showers, teenagers, and daily laundry point to gas, and especially tankless. Predictable, lighter usage in a smaller home is exactly what electric handles well.
3. How long will you stay in this home?
Solar and tankless both reward the long game. If you plan to move within five years, a straightforward tank replacement usually makes more financial sense than a premium system you will not stay to enjoy.
Still weighing it? Our team walks through your gas service, your household size, your utility bills, and your space before recommending anything. Browse our water heater options or call us and we will run the numbers for your specific home.
Frequently Asked Questions
Which water heater is cheapest to run in Ontario?
Natural gas. Ontario gas rates deliver heat at roughly a third of the cost of standard electric resistance heating, so a gas tank typically costs 20 to 40 dollars per month versus 45 to 75 dollars for a comparable electric tank. A heat pump water heater narrows that gap for homes without gas.
Is a solar water heater worth it in Mississauga?
It depends on your baseline. Against natural gas, payback commonly exceeds 15 years. Against electric water heating, or for homes without gas service, the math is much stronger. Every solar system in Ontario needs a backup heater for winter and cloudy weather.
How long does each type of water heater last?
Standard tanks, whether gas or electric, last roughly 8 to 15 years depending on water quality and maintenance. Gas tankless units routinely exceed 20 years, and solar collectors often reach 20 to 25 years. Annual maintenance extends all of them.
Can I switch from electric to gas water heating?
Yes, if your home has gas service or can economically add it. The conversion involves running a gas line to the heater location, adding proper venting, and a TSSA licensed installation. Many Peel homeowners make the switch during a planned replacement, when the labour overlaps anyway.
Should I choose a tank or tankless gas water heater?
Tankless costs more upfront but delivers endless hot water, lasts about twice as long, and trims monthly bills by 10 to 20 percent. A conventional tank remains the value pick for smaller households or shorter ownership horizons. We install and service both.
We will check your gas service, household demand, and space, then quote the option that actually saves you money. Serving Mississauga, Brampton, and all of Peel Region since 1990.
I have spent more than 26 years helping Ontario families choose heating and cooling systems that fit how they actually live. My team has installed every type of water heater covered in this guide across Mississauga, Brampton, and Caledon, and the advice above comes straight from those job sites. If you want a recommendation based on your home rather than a brochure, call us at 905-564-8545.