Heating & Air Conditioning by City
192 heating & air conditioning businesses in 4 cities. Each city page lists businesses with an address in that city and service-area businesses that travel there. Top-rated: Creature Comforts HVAC (★5.0), Dynamic Heating & Cooling (★5.0) and Flashe Gas (★5.0).
Use this page to find a heating and air conditioning contractor by city in Ontario. Each city page lists HVAC contractors with an address in that city plus service-area contractors that travel there, with their Google rating, hours and contact details, so you can compare a few before you call.
⭐ Top Rated Heating & Air Conditioning Businesses in Ontario
1373 Harmsworth Square, Oakville, ON L6H 3E7
655 ON-8, Hamilton, ON L8E 5J7
3185 Dundas St W, Oakville, ON L6M 4J4
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Ontario
Common HVAC services
- Air conditioner repair and installation
- Heat pump installation and repair
- Furnace repair and replacement
- Ductwork repair and duct cleaning
- Thermostat installation
- Air cleaners and humidifiers
- Maintenance plans
Emergency or can it wait?
If you smell gas or a carbon monoxide alarm goes off, leave the home right away and call emergency services or your gas utility from outside. No heat in cold weather or no cooling in extreme heat can be urgent, especially for young children, older adults or anyone with health concerns. Weak airflow, reduced cooling or a new noise can usually be scheduled. Each city page shows how many local HVAC contractors list 24-hour availability.
Questions to ask before you hire
- What qualifications apply to gas and refrigerant work in my area? Check the city page for local requirements.
- Will you do a load calculation to size new equipment?
- What are the model and efficiency rating of the equipment you are quoting?
- Does the quote include any permit and removal of the old equipment?
- What manufacturer and labour warranties come with the system?
How service areas work
Many HVAC contractors do not have a storefront and travel to customers across several cities. On BookHomeServices.ca, these service-area businesses appear on every city page they serve, so the same contractor can show up in more than one city. Businesses with a shop address are listed in their own city and may also serve nearby ones — check the city page for who covers your area.