- For Emergency Service Call: 905-428-8080 or 416-697-0822
Commercial HVAC/R Contractors & Energy Management Professionals
City Wide Service 24/7
We Are Just A Call Away
Heating • Ventilation
Air Conditioning • Refrigeration
Energy Management
Ontario Air Systems is a full service HVAC/R contractor (heating, ventilation, air-conditioning and refrigeration) serving the commercial, institutional, and industrial markets in Toronto and surrounding area since 1990. We provide:
- complete HVAC/R system design, repair, and installation,
- energy management & indoor air quality services,
- comprehensive preventative maintenance packages to keep your systems at peak performance and reliability, and
- on call emergency repair service and support 24/7, 365 days of the year.
PREVENTATIVE MAINTENANCE
We repair all types and brands of HVAC equipment but prefer to prevent breakdowns and equipment failures through preventative maintenance programs.
QUALIFIED TECHNICIANS
We use only experienced, licensed, and certified HVAC service technicians and we are a company you can rely on to maintain and service your HVAC/R and other systems with professionalism, integrity, and reliability.
ENERGY EFFICIENCY SAVINGS
We also offer a full range of energy management services. Let Ontario Air Systems help you increase your energy efficiency and control costs while keeping your staff comfortable all year round. Read more about our Energy Management and HVAC Audit below.
Free Consultation: Energy Management and HVAC Audit
We can recommend ways for you to maximize your energy efficiency and reduce your energy usage as well as show you the cost benefits of preventative maintenance. We can demonstrate your savings in consultation. Call us at 905-428-8080 to set up an appointment.
- Improve comfort and air quality
- Improve system reliability
- Improve work environment
- Reduce operating and energy costs
- Reduce equipment downtime
- Reduce total cost of ownership
CONTACT US TO BOOK YOUR FREE CONSULTATION 
UP-FRONT PRICING
We believe in treating customers like intelligent people. So there are no hidden costs. You will always receive a true estimate of the costs, a fair price, and the best possible job.
OUR SERVICE AREA
Ontario Air Systems provides full service to Southern Ontario, the Golden Horshoe. City Wide Service 24/7 whether you are in Toronto, Markham, Mississauga, Brampton, Oakville, Richmond Hill, Newmarket, Collingwood, Barrie, Muskoka, Pickering, Ajax, Whitby, Oshawa, Belleville, Coburg, Kingston, Hamilton, St. Catherines, Kitchener, or London. We Are Just a Call Away.