HVAC Contractors in Cornwall, — 18 Local Contractors

There are 18 hvac contractors in Cornwall, . The average rating is 4.7 out of 5 stars across 16 rated businesses. The highest rated is Walker Home Services (formerly Walker ClimateCare (4.8 stars). The most reviewed is Walker Home Services (formerly Walker ClimateCare with 1556 reviews.

Finding a reliable hvac contractor in Cornwall starts with knowing what to look for. Local contractors in this area handle furnace installation, air conditioning repair, heat pump setup, duct cleaning, and ventilation upgrades. When comparing options, verify HVAC certification, gas fitting license where applicable, and insurance coverage. Schedule maintenance before peak heating and cooling seasons for better availability. Ontario's variable four-season climate mean that experienced local contractors will plan accordingly. Check the ratings and reviews below to find a hvac contractor that fits your project and budget.

Behemoth Heating and Cooling HVAC Systems

1646 Birmingham St, Cornwall, ON K6H 3N2

★★★☆☆ 3.3 (4 reviews)
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Frequently Asked Questions

How many hvac contractors are in Cornwall?
There are 18 hvac contractors listed in Cornwall, as of 2026.
What is the average rating?
The average Google rating for hvac contractors in Cornwall is 4.7 out of 5 stars.
How do I choose a hvac in Cornwall?
Compare ratings and review counts, verify their credentials and insurance, and get at least three quotes before hiring.