
Heating and cooling in Dundas
Furnace and air conditioning service in Dundas
Smithville Heating Cooling works on furnaces, central air and heat pumps in Dundas. Tell us what your system is doing and what kind of house it heats, and you will get a straight diagnosis and a written price before any part is fitted.
What Dundas houses tend to need
We come out to Dundas from Smithville for furnace repair and replacement, air conditioning, heat pumps and pre-season tune-ups. If your house has an older furnace venting into a chimney, or a newer one venting through the wall, we check the venting along with everything else, and the price is written down before work starts.
Dundas is part of the area we cover from Smithville, and the jobs there run the full range, from an older furnace that needs a careful look to a newer system that needs nothing more than a seasonal check.
A tune-up before the furnace is needed
The best time to find a worn part is before the first cold week. A maintenance visit covers the burners, the blower, the filter, the flame sensor and the safety controls. On an older furnace that means a close look at the heat exchanger. On a high-efficiency one it includes the condensate drain and the plastic vent pipes outside.
When the heat stops
If the furnace goes quiet, check that the switch beside it is on and the filter is not packed with dust, then tell us what happened. A technician tests the system, explains the fault in plain terms and gives you the repair price in writing. If a repair is not worth the money on an old unit, you hear that too. See furnace repair.
Older chimneys and replacement furnaces
If an older furnace shares a masonry chimney with a gas water heater, replacing the furnace with a side-wall vented model can leave the water heater alone in a flue that is now too big for it. A liner usually fixes that, and it belongs in the plan from the start. Gas appliances in Ontario are installed to the CSA B149.1 Natural Gas and Propane Installation Code, which sets out how venting is done. Read more on furnace replacement.
Arranging the visit
Reach us through the contact page, or ask for a written quote if you are planning a replacement.
Communities we serve
- Cootes Paradise
- West Hamilton
- Pleasant Valley
- Westdale
Services in Dundas

Furnace repair in Smithville
Furnace repair in Dundas
Furnace repair for homes in Dundas, from older converted houses to newer high-efficiency builds.
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From Griffin Street to Spring Creek Rd.
Furnace installation and replacement in Dundas
Smithville Heating Cooling installs and replaces high-efficiency furnaces in Dundas, sized to each house with the chimney, ducts and venting checked first.
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From Griffin Street to Spring Creek Rd.
Air conditioner repair in Dundas
We repair central air conditioners in Dundas as well as around Smithville, from older split systems in established subdivisions to the units on newer builds.
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From Griffin Street to Spring Creek Rd.
Air conditioning installation in Dundas
Smithville Heating Cooling installs central air and ductless systems in Dundas, sized to the house and its ductwork.
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Heat pumps in Smithville and West Lincoln
Heat pumps in Dundas
We install and repair cold-climate and hybrid heat pumps for homes in Dundas, working alongside the gas furnace already in the basement.
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From Griffin Street to Spring Creek Rd.
Furnace and AC maintenance in Dundas
Seasonal furnace and air-conditioner tune-ups for homes in Dundas, booked ahead of the cold and the first humid stretch.
Learn moreQuestions from Dundas homeowners
My Dundas house has an old chimney. Does that change a furnace replacement?
It can. A high-efficiency furnace vents through plastic pipe in the side wall, so it no longer uses the chimney. If a gas water heater still vents there, the flue may now be too large for it to draft well, and a liner is often needed. We look at the chimney during the quote and include any relining in the written price. See furnace installation and replacement.
Who is allowed to work on a gas furnace in Ontario?
Under Ontario Regulation 212/01, gas appliances must be installed, serviced and repaired by a registered gas contractor using G1, G2 or G3 gas technicians. The work must meet the CSA B149.1 Natural Gas and Propane Installation Code. At Smithville Heating Cooling, work is performed by TSSA-certified gas technicians. Doing it this way also helps keep the manufacturer's warranty valid. Before anyone opens the cabinet, ask to see their gas certificate. Read more on furnace installation and replacement.
Where do carbon monoxide alarms have to go?
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. That takes in a lot of Smithville, from gas-heated houses on Canborough Street to the new streets south of town. In early November the normal low is 0°C, so furnaces are running steadily by then. Test your alarms before the cold settles in, and replace them by the date on the back. Our guide on side-wall vents, snow and carbon monoxide covers the rest.
Nearby areas
From our home base in Smithville we also work in Beamsville, Grimsby and Stoney Creek, as well as Dundas. See the full list on the [areas page](/areas).
- Heating and cooling in Beamsville
- Heating and cooling in Grimsby
- Heating and cooling in Stoney Creek
- Heating and cooling in Binbrook
- Heating and cooling in Hamilton
- Heating and cooling in Caledonia
- Heating and cooling in Burlington
- Heating and cooling in Waterdown
- Heating and cooling in Ancaster
- Heating and cooling in Oakville
- Heating and cooling in Flamborough
Need heat or cooling in Dundas?
Tell us what your system is doing and what kind of house it is in. You will have a written price before any work starts.