
Heating and cooling in Dundas
Furnaces, air conditioners and heat pumps in Dundas
Grimsby Heating and Cooling repairs, replaces and maintains heating and cooling equipment in Dundas. The technician traces each fault to a specific part, takes the readings that confirm it and writes down the price before any work starts.
How the houses in Dundas shape the work
Grimsby Heating and Cooling works in Dundas from its base in Grimsby, on furnaces, air conditioners and heat pumps. Many Dundas questions are about whether a cold-climate or hybrid heat pump suits the house. The answer comes from a room-by-room heat loss calculation, the duct sizes and the electrical panel, with rebate eligibility checked at the time of the quote.
Heat pumps, furnaces and air conditioning in Dundas
From its base in Grimsby, Grimsby Heating and Cooling serves Dundas homeowners who want to understand their heating and cooling before deciding what to repair or buy. Many of the questions we hear are about heat pumps, so this page starts there.
Cold-climate and hybrid heat pumps
A cold-climate heat pump is built to keep producing heat at outdoor temperatures where older models stopped being useful. A hybrid system pairs a heat pump with a gas furnace, and a control hands the load to the furnace below a set outdoor temperature. Which one suits a house depends on:
- the heat loss of the house, worked out room by room
- whether the existing ducts can carry the higher airflow a heat pump usually needs
- spare capacity in the electrical panel for the outdoor unit
- whether the current furnace is young enough to keep as backup
Rebate programs change, so eligibility is checked when the quote is written rather than promised in advance. The heat pumps page and the guide on heat pumps, rebates and heating costs go into more detail.
Work is performed by 313A refrigeration and air conditioning mechanics.
Repairs come before upgrades
If your furnace or air conditioner has failed, the technician diagnoses that fault before any talk of new equipment. See furnace repair and air conditioner repair.
Arranging a visit
Send the details through the contact page, or request a written price for a heat pump on the quote page.
Communities we serve
- Cootes Paradise
- West Hamilton
- Pleasant Valley
- Westdale
Heating and cooling services in Dundas

Furnace repair in Grimsby
Furnace repair in Dundas
Furnace repair in Dundas, with each fault measured and traced to the part before a written price is given.
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Grimsby furnace installation
Furnace installation and replacement in Dundas
Grimsby Heating and Cooling sizes and installs high-efficiency furnaces for homes in Dundas, with the ducts, venting and chimney checked before any price is written.
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Central air repair in Grimsby
Air conditioner repair in Dundas
Central air repair in Dundas, with every fault traced to a measured cause and priced in writing before work begins.
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Central air and ductless in Grimsby
Air conditioning installation in Dundas
Grimsby Heating and Cooling installs central air and ductless systems in Dundas, sized from a measured load and duct assessment of each house.
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Cold-climate and hybrid systems
Heat pumps in Dundas
Grimsby Heating and Cooling installs and repairs cold-climate, ductless and hybrid heat pumps in Dundas, sized from the house and its ducts.
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Seasonal tune-ups in Grimsby
Furnace and AC maintenance in Dundas
Grimsby Heating and Cooling tunes up furnaces, air conditioners and heat pumps in Dundas, with vent, drain and chimney checks matched to the age of the house.
Learn moreQuestions from homeowners in Dundas
Can a heat pump heat a Dundas home on its own?
It depends on the house rather than the postcode. The technician calculates the heat loss room by room and compares it with the heat pump's output at low outdoor temperatures. If the unit can cover the load and the ducts can carry the airflow, it can work alone with electric backup. If not, a hybrid system that keeps a gas furnace for the coldest days is usually the better choice. See heat pumps.
My high-efficiency furnace shut down during a cold snap. What should I check?
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.
Who is allowed to install or repair a gas furnace in Ontario?
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.
Nearby communities
Besides Dundas, our technicians also work in Beamsville, Smithville and Stoney Creek.
- Heating and cooling in Beamsville
- Heating and cooling in Smithville
- Heating and cooling in Stoney Creek
- Heating and cooling in Binbrook
- Heating and cooling in Hamilton
- Heating and cooling in Burlington
- Heating and cooling in Waterdown
- Heating and cooling in Oakville
- Heating and cooling in Caledonia
- Heating and cooling in Ancaster
- Heating and cooling in Flamborough
- Heating and cooling in Milton
Tell us what your system in Dundas is doing
Tell us what your furnace, air conditioner or heat pump is doing. The technician measures, explains the cause and writes down the price before any work begins.