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Find the 311 Best HVAC Contractors in Ontario, ON

Browse 311 HVAC businesses serving Ontario, ON, including Mississauga, Brampton and Etobicoke, for residential and commercial projects. Review heating, cooling and ventilation services, read customer feedback and contact local contractors for installation, repair or maintenance estimates.
Ajax (1)
Alliston (1)
Amherstburg (1)
Ancaster (3)
Ariss (1)
Arnprior (1)
Aurora (2)
Ayr (1)
Bancroft (1)
Barrie (3)
Beamsville (1)
Belle River (1)
Belleville (1)
Bolton (1)
Brampton (11)
Brantford (4)
Burlington (5)
Caledon (1)
Caledonia (1)
Cambridge (5)
Carp (1)
Cavan (1)
Chatham (1)
Claremont (1)
Clarington (1)
Concord (6)
Coniston (1)
Cornwall (1)
Courtice (2)
Courtland (1)
Dunrobin (1)
East Garafraxa (2)
East York (1)
Elmira (1)
Elmvale (1)
Embrun (1)
Essex (1)
Etobicoke (10)
Fenelon Falls (1)
Fenwick (1)
Fergus (1)
Fraserville (1)
Georgetown (1)
Gloucester (1)
Goderich (1)
Gormley (1)
Grand Bend (1)
Granton (1)
Gravenhurst (1)
Greater Sudbury (1)
Grimsby (1)
Guelph (2)
Haileybury (1)
Haliburton (1)
Hamilton (7)
Harrow (1)
Hartington (1)
Hawkesbury (1)
Hearst (1)
Hensall (1)
Huntsville (2)
Ingersoll (1)
Innisfil (2)
Kanata (1)
Kemptville (1)
Kingston (2)
Kitchener (3)
Kleinburg (2)
Lansdowne (1)
Leamington (1)
Lindsay (2)
Lively (1)
London (6)
Markham (6)
Maryhill (2)
Midland (1)
Milton (1)
Mississauga (16)
Moose Creek (1)
Mount Hope (1)
Navan (1)
Nepean (3)
Newmarket (1)
Niagara Falls (2)
Niagara On The Lake (1)
North Bay (1)
North York (6)
Oakville (6)
Oldcastle (1)
Orillia (3)
Orleans (1)
Oshawa (2)
Ottawa (7)
Owen Sound (1)
Palmerston (1)
Parry Sound (1)
Pefferlaw (1)
Pelham (1)
Pembroke (1)
Penetanguishene (1)
Peterborough (3)
Pickering (2)
Picton (1)
Port Elgin (1)
Port Hope (1)
Port Perry (1)
Priceville (1)
Red Lake (1)
Renfrew (1)
Richmond (2)
Richmond Hill (3)
Saint Catharines (7)
Saint Isidore (1)
Saint Thomas (2)
Sault Sainte Marie (2)
Scarborough (8)
Scotland (1)
Selwyn (1)
Severn (1)
Simcoe (1)
South Mountain (1)
Southampton (1)
Stevensville (1)
Stittsville (1)
Stoney Creek (2)
Stouffville (1)
Stratford (1)
Strathroy (1)
Sudbury (2)
Sydenham (1)
Thessalon (1)
Thornhill (1)
Thorold (2)
Thunder Bay (3)
Tillsonburg (1)
Timmins (1)
Toronto (8)
Trent Lakes (1)
Trenton (2)
Tweed (1)
Uxbridge (1)
Vaughan (2)
Wainfleet (1)
Wallaceburg (1)
Wasaga Beach (1)
Waterloo (4)
Welland (3)
Whitby (1)
Whitchurch Stouffville (1)
Williamsburg (1)
Windsor (10)
Woodbridge (3)
Woodstock (1)
Wyoming (1)
Yarker (1)
Zurich (1)
HVAC MARKET CORP.
Verified
Emergency
5 reviews
HVAC MARKET CORP.
Emergency
5 reviews
We offer 24/7 emergency HVAC services for urgent needs.
Trusted HVAC services in Toronto. Residential & commercial furnace, AC, and water heater installation, repair, and maintenance. Competitive pricing, 24/7 emergency support, and 1-year warranty.
Furnace Installation Air Conditioner Repair Water Heater Replacement
Website (437) 223-9253 Call Profile
Hvac-group
Verified
Emergency
19 reviews
Hvac-group
Emergency
19 reviews
Licensed technicians with TSSA certification
Trusted HVAC services in Toronto for installation, repair, and maintenance. Reliable 24/7 emergency support. Get a free quote today!
Furnace Repair AC Installation Heat Pump Repair
Website (416) 807-2752 Call Profile
The Heatman Heating and Cooling
Verified
26 Years
Emergency
Open 24/7
12 reviews
The Heatman Heating and Cooling
26 Years
Emergency
Open 24/7
12 reviews
We offer 24/7 emergency HVAC services for urgent repairs.
Trusted HVAC services in Mississauga since 2000. Expert furnace, air conditioning, and water heater installation, repair, and maintenance. 24/7 emergency service, certified technicians, and financing options available.
Furnace Installation Air Conditioning Repair Water Heater Services
Website (647) 892-7396 Call Profile
1 review
Mr. Heat Furnace Orillia
Emergency
Open 24/7
1 review
Professional furnace installation services
Trusted HVAC services in Orillia, including furnace repair, installation, and maintenance. Contact Mr. Heat Furnace Orillia for reliable heating and cooling solutions tailored to Ontario's climate.
Furnace Repair HVAC Installation Water Heater Repair
(705) 413-2057 Call Profile
4 reviews
Avis Heating & Air Conditioning
Emergency
Open 24/7
4 reviews
15 years of experience in HVAC services across Ontario
Trusted HVAC services in Mississauga, ON, offering installation, maintenance, and 24/7 emergency repairs for residential and commercial clients.
Heating Services Cooling Services Water Heater Installation
(416) 655-2220 Call Profile
2 reviews
Best Cooling Systems
Emergency
2 reviews
30+ years of specialized refrigeration experience
Expert HVAC and refrigeration installation, maintenance, and 24/7 emergency services in Grand Bend, ON. Serving Southwestern Ontario since 1971 with energy-efficient cooling solutions.
Ice Cube Machines Walk-in Coolers Grocery Display Coolers
(519) 238-6196 Call Profile
Pro Reefer
28 Years
Emergency
7 reviews
Pro Reefer
28 Years
Emergency
7 reviews
We offer 25+ years of expertise in mobile fleet maintenance across Canada.
Pro Reefer offers 24/7 mobile fleet maintenance and repair services across Canada, specializing in reefers, heaters, and trucks with real-time data tracking via our cloud portal.
Reefer Services Heater Services Re-Fuelling Services
(416) 705-3144 Call Profile
6 reviews
Husky Heating & Air Conditioning
50+ Years
Emergency
6 reviews
40+ years of HVAC expertise serving the Greater Toronto Area
Trusted HVAC services in Vaughan since 1974. Expert furnace, air conditioning, and water heater installation, repair, and maintenance with 24/7 emergency service across Toronto.
Furnace Repair Air Conditioning Installation Heat Pump Services
(905) 761-9485 Call Profile
Not rated yet
Acrolab
50+ Years
Not rated yet
We offer over 70 years of expertise in thermal engineering solutions.
Acrolab Ltd. provides advanced thermal engineering solutions, including heat pipes, thermocouples, and custom control panels for industrial applications worldwide.
Isobar Heat Pipes Custom Isobars Isomandrel Heating Elements
(519) 944-5900 Call Profile
Not rated yet
Accutron Instruments
33 Years
Not rated yet
ISO 9001 certified manufacturing processes
ISO 9001 certified provider of ultrasonic airflow monitors and environmental sensors for mining applications. Serving 35+ countries with real-time ventilation monitoring solutions since 1993.
Ultrasonic Airflow Monitoring Gas and Particulate Detection Heat Stress Monitoring
(705) 682-0814 Call Profile