Heating
Stay warm all winter — every winter.
Ontario winters punish weak heating systems. Our team installs and services high-efficiency furnaces, condensing boilers, and cold-climate heat pumps that hold their output below -20°C without failing or eating gas. We provide professional heating in Toronto and across the Greater Toronto Area, including Vaughan, Markham, Richmond Hill, North York, Scarborough, Mississauga, Brampton, and surrounding cities.
- ENERGY STAR furnaces up to 98% AFUE
- Cold-climate heat pumps that work to -25°C
- Boiler retrofits & radiant heating
- 24/7 emergency repair across Ontario
Heating services
Pick the heating service you need
Each service below has its own page with what's included, common signs, pricing notes, and FAQs.
Furnace Repair
Same-day diagnostics and repairs on every major brand.
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Furnace Installation
High-efficiency furnaces sized properly for your home.
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Heater Installation & Repair
Electric, gas, and combination systems — installed right.
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Heat Pump Repair
Cold-climate heat pump diagnostics and fast repairs.
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Boiler Installation
Modern condensing boilers with up to 95%+ efficiency.
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Furnace Maintenance
Annual tune-ups that protect your warranty and lower bills.
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What's included
Our heating services
Furnace installation & replacement
Two-stage and modulating furnaces sized to your heat-loss calculation, with a proper venting and gas-line review on every install.
Boiler service & retrofits
From cast-iron rad replacements to combi-boiler upgrades that handle both heat and domestic hot water from one unit.
Heat pumps
Cold-climate inverter heat pumps that heat efficiently into deep winter and double as your AC in summer — often with rebates that cover thousands.
Annual maintenance
Combustion analysis, heat-exchanger inspection, and safety checks that protect your warranty and catch problems before they become emergencies.
Our team regularly installs and services HVAC and electrical systems in cities like Newmarket, Aurora, Oakville, and Burlington, ensuring reliable performance across all regions.
FAQ
Common questions
Heat pump or furnace?
Most Ontario homes are best served by a hybrid: heat pump for mild weather, gas furnace for the deepest cold. We'll model the savings before recommending.
How long should a furnace last?
15–20 years with annual maintenance. Past 15, replacement usually pays back faster than repeated repairs.
Get started
Request heating service
Tell us a bit about your project. We'll follow up within one business day.
Service Areas
Ontario Air Services provides heating services across Toronto and the GTA, including Vaughan, Markham, Richmond Hill, North York, Scarborough, Etobicoke, Mississauga, Brampton, Newmarket, Aurora, Oakville, and Burlington. No matter where you are located, our experienced technicians are ready to help.
- Toronto
- Vaughan
- Markham
- Richmond Hill
- North York
- Scarborough
- Etobicoke
- Mississauga
- Brampton
- Newmarket
- Aurora
- Oakville
- Burlington