Who looks after furnaces and air conditioning in Waterdown?

Once a year is the usual advice, ideally in early fall before the heating season starts. Central air is best checked in spring. Keeping the dated record of each visit matters, because many manufacturers ask for proof of regular maintenance if a warranty claim comes up. Between visits, change or clean the filter every few months. You can book through furnace and AC maintenance.

In the newer houses of Fruitland and Winona, the furnace is usually a high-efficiency condensing model that breathes through two plastic pipes in an outside wall. Drifting snow over those pipes, or a condensate drain that has frozen or clogged, will make it shut down to protect itself. It is safe to brush the snow away from the pipes by hand and check that the small drain line is not kinked or frozen. Do not open the burner compartment. If it still will not start, book a furnace repair visit.

A gas appliance is not a do-it-yourself job in Ontario. Ontario Regulation 212/01 requires gas appliances to be installed, serviced and repaired by a registered contractor using G1, G2 or G3 gas technicians. The work follows the CSA B149.1 Natural Gas and Propane Installation Code, which covers propane as well. Work is performed by TSSA-certified gas technicians. Changing the filter is fine for you to do; anything touching the gas line, burners or venting is not. Before you hire anyone, ask which code their work follows, and read about furnace installation and replacement.