Business ProfileVerifiedHVAC Companies in Vaughan, Ontario
ONAS Heating & Cooling Corp. O/A Ontario Air Services
ONAS Heating & Cooling Corp. O/A Ontario Air Services provides HVAC and electrical services in Vaughan and across the Greater Toronto Area. The company has served Ontario homes and businesses for over a decade.
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Business Highlights
- The company says it is licensed and insured.
- Ontario Air Services says TSSA- and ESA-licensed technicians are on every job.
- The company says its air-quality materials, work and craftsmanship are guaranteed for up to two years.
Service Area
Toronto, Vaughan, Markham, Richmond Hill, North York, Scarborough, Mississauga, Brampton, Newmarket, Aurora, Oakville and Burlington.
Public local listing. ONAS Heating & Cooling Corp. O/A Ontario Air Services is one of 12 HVAC companies ProsGrade lists in Vaughan, Ontario.
Listing details
12 services listed, including Furnace repair, Furnace installation and Heat pump installation. Open 24 hours, 7 days a week. 143 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How ONAS Heating & Cooling Corp. O/A Ontario Air Services compares with the other 11 HVAC companies on ProsGrade in Vaughan, using public Google ratings and review counts.
- Ranks in the top half of the 12 Vaughan HVAC companies on ProsGrade by Google rating and review volume.
Trust Signals
Open 24 hours as listed on Google; contact to confirm after-hours availability for urgent HVAC needs.
Services Covered
12 services- Furnace repairgas, electric and heat-pump furnaces
- Furnace installationgas, electric and high-efficiency two-stage models
- Heat pump installationair-source, ductless mini-split and hybrid systems
- Heat pump repaircold-climate, ductless and inverter systems
- Boiler installationcondensing boilers with up to 95%+ efficiency
- Furnace maintenancecombustion analysis, heat-exchanger inspection and safety checks
- AC servicesinstallation, repair and maintenance; ductless mini-splits
- Air qualityair purifiers, humidifiers, HRV/ERV systems and duct cleaning
- Hot water and hydronictank and tankless water heaters; hydronic heating and repairs
- Commercial HVACrooftop units, make-up air, service contracts and retrofits
- Electrical servicespanel upgrades, EV chargers, lighting, wiring and repairs
- HVAC rentals and financingfurnace and AC rentals; financing plans
Reviews
What customers say
Customers praise clear communication during installations, and one described the work as clean and well organized. One customer valued help choosing a four-zone, four-head Tosot heat pump; at a separate older-home job, a customer said ONAS returned to correct wiring issues and completed the work correctly.
Customer Reviews
Elizabeth Wilson
My heat pump replacement was smooth with Ontario Air Services. The crew worked efficiently communicated well and made me feel comfortable.
A. M.
ONAS Heating & Cooling Corp. exceeded my expectations. From start to finish, their team demonstrated a high level of professionalism and technical skill. The installation was not only flawless but also extremely clean and well-organized. It’s rare to find contractors who care this much about both quality and presentation. Highly recommend!
Sahar Hariri
I installed a four zone, four head Tosot heat pump for my old house in downtown. Amir and Arsalan were amazingly helpful in guiding me through my brand selection and size/qty decision. The installation team was also very communicative and checked in with me for all the setup and placement decisions. The system is working much better than I expected and I’m quite pleased with the process and the outcome. Highly recommend these folks.
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Frequently Asked Questions
How long does an ONAS furnace installation take?
Most standard furnace installations take one day; jobs involving venting changes or fuel conversions may take one to two days.
Does ONAS remove the old furnace during installation?
Yes. The company includes removal of the old equipment, installation, testing and setup.
Does ONAS help with Ontario furnace rebates?
The company says it helps customers access Ontario furnace rebates and government incentives.
What does an ONAS heat-pump installation include?
The process includes an assessment, system selection, installation, calibration and homeowner orientation.
Does ONAS provide emergency furnace repair around the clock?
Emergency furnace repair is available 24/7 across Ontario.