Top 10 Hvac Contractor in Ottawa, ON

Demand to see the contractor's active TSSA registration number and verify it directly on the TSSA registry before signing any HVAC installation agreement.

Insist on a written Manual J heat load calculation; avoid any contractor who estimates system size based solely on your home's square footage.

Verify that the technicians on-site hold valid G2 or G1 gas fitter licenses, as G3 apprentices cannot work unsupervised on residential gas lines.

Ask if the contractor is registered with the HRAI (Heating, Refrigeration and Air Conditioning Institute of Canada) to ensure adherence to national installation standards.