Frequently asked questions

Newer west-end homes, around the Winston Road Neighbourhood and the GO Station area, mostly have condensing furnaces that draw air and exhaust through plastic pipes in the side wall. The lake softens winters on this shore, but cold snaps and drifting snow still come. Frost on the exhaust or snow over the intake makes the pressure switch sense restricted flow, and the control board stops the burner. A frozen condensate line can trip the same switch by backing water into the trap. Clear both pipes by hand, check the drain line for ice, then switch the furnace off and on. If it stops again, book furnace repair.

The part, the labour to reach it and whether the fault has damaged anything else. Cleaning a flame sensor or replacing a hot-surface igniter sits at the low end. An inducer motor or control board costs more. A heat exchanger is the most expensive repair on a furnace and often tips the decision toward replacement. Before writing a price, the technician reads the fault code, checks gas pressure, temperature rise and flame-sensor signal, and tests the pressure switch. You approve that written number before work begins. See furnace repair.

Sometimes, but rarely without work. Many cottages in Grimsby Beach and houses on Main Street were first heated by wood or coal and converted later. Modern gas equipment sends cooler flue gas up the chimney, which can condense inside an unlined masonry flue, damage mortar and spoil the draft, so a liner is often needed. A condensing furnace vents through the side wall instead and may leave the water heater alone in that chimney. Grimsby Beach's narrow cul-de-sacs also affect delivery. When booking, tell us which appliances share the chimney, and read about furnace installation and replacement.

Lakemount Terrace was built by hand after the war, and houses of that period usually started with oil or coal forced-air furnaces later converted to gas. The original ducts are often undersized and the return air is weak. A furnace cannot heat air it cannot pull back: a restricted return raises the temperature rise across the heat exchanger, trips the high limit and causes short cycling. The technician measures static pressure and temperature rise; adding a return can do more than a bigger furnace. Note which rooms stay cold and which registers blow weakly, then book furnace repair.

When the thermostat calls for heat, the furnace runs a fixed sequence: inducer motor starts, pressure switch closes, igniter heats, gas valve opens, flame sensor proves the flame. A fault at any step stops the burner, and the blower may keep running and push cold air. Common causes are a dirty flame sensor, a cracked igniter, a blocked condensate trap or a clogged filter tripping the high limit. Switching the furnace off and on clears a lockout once, but repeated resets hide the fault. See our guide on a furnace running but not heating.

Age alone does not decide it; the fault and the house do. A failed igniter or blower capacitor in an older furnace is a small repair. A cracked heat exchanger, the most expensive part on a furnace, usually means replacement, and it should not be left running because it can let combustion gases into the house. Parts availability, efficiency and whether the ductwork suits a new unit also matter. A replacement is sized from a load and duct assessment, not the old label. Read the repair or replace guide.

The fault found by measurement. A failed run capacitor or contactor is a modest repair. A refrigerant leak costs more, because the leak has to be located and fixed before the charge is restored; topping up without a repair only delays the next failure. A failed compressor is the costliest and often leads to a replacement discussion. The technician measures refrigerant pressures, superheat and subcooling, and the current each motor draws, before writing a price. Work is performed by 313A refrigeration and air conditioning mechanics. See air conditioner repair.

A proper tune-up is a set of measurements, not just a filter change. The technician checks gas pressure at the valve, temperature rise across the heat exchanger, flame-sensor signal and pressure-switch operation, inspects the heat exchanger and burners, and tests the safety limits. On condensing furnaces the condensate trap and drain line are cleaned and the side-wall vent terminations checked; in homes with heat-recovery ventilation the ventilator filters are checked too, since they are often neglected. See furnace and AC maintenance.

Ontario Regulation 212/01 (Gaseous Fuels) says gas appliances must be installed, serviced and repaired by a registered contractor whose gas technicians hold a G1, G2 or G3 certificate. The work follows the CSA B149.1 Natural Gas and Propane Installation Code, which Ontario adopts under the same regulation. Work is performed by TSSA-certified gas technicians. Air conditioning is a separate compulsory trade with its own certificate of qualification. Before anyone opens the gas line, ask to see the technician's certificate. Read more on furnace installation and replacement.

The Ontario Fire Code requires a working carbon monoxide alarm next to each sleeping area in a home with a fuel-burning appliance, a fireplace or an attached garage. A gas furnace, gas water heater or gas fireplace all count. The alarm warns you after carbon monoxide is already in the air. It does not find the cause, such as a cracked heat exchanger letting combustion gases into the air the blower circulates, or a blocked flue. Test each alarm, confirm one sits outside every bedroom area, and have the heat exchanger inspected through furnace and AC maintenance.

Enbridge Gas provides natural gas service for the Town of Grimsby. If your home is not connected, Enbridge Gas has a form you can fill out, and its team will confirm whether gas is available or planned for your area and explain the next steps. Until then, the choice is usually between keeping the current system and moving to an electric heat pump, which needs no gas line. Contact Enbridge Gas first so you know your options, then compare them on our heat pumps page.

Yes. Besides its designated heritage properties, the Town of Grimsby keeps a public register of properties with cultural heritage value or interest that are not designated. A condensing furnace vents through plastic pipes in an exterior wall, and CSA B149.1 sets how far those terminations must sit from windows, doors and air intakes, so the vent location is often fixed by the code rather than by looks. Owners of older homes on Main Street or in Grimsby Beach should check the register before planning exterior work, then read about furnace installation and replacement.

In Ontario homes, the usual three are a split system, a heat pump and a ductless mini-split. A split system pairs a forced-air furnace indoors with a central air conditioner outside, sharing the same ducts. A heat pump moves heat in both directions, cooling in summer and heating in winter; a hybrid setup pairs it with a gas furnace for the coldest days. A ductless mini-split puts wall-mounted heads in rooms where older houses have no space for ductwork. Compare them on our services page.

It depends on the gas and electricity rates you pay, how well the house holds heat and the efficiency of the equipment. A cold-climate heat pump is very efficient in mild weather, and a hybrid system lets a gas furnace take over when it gets colder, which suits a lake-moderated shoreline. Rebate and tax-credit programs for furnaces, heat pumps and air conditioners change often, and some require an assessment before installation. We check what is current at the time of the quote. Read our guide to heat pumps and rebates.