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Monday – Friday: 8:00AM – 4:30PM · 24 Hour Emergency Service

A Lancaster technician servicing a furnace

HVAC Service · Hamilton

Professional HVAC Service in Dundas

Look no further than Lancaster Heating and Cooling for prompt, reliable, professional, and trustworthy HVAC service in Dundas. Whether you live in Highland Park, Pleasant Valley, Governor’s Estates, University Gardens, or the central Dundas core, we provide a full range of HVAC services to residential and commercial clients.

Heating and cooling in Dundas homes

Dundas, the “Valley Town”, has one of the oldest housing stocks in the area. According to the 2021 Census, about 34% of Dundas homes were built before 1961 and 67% before 1981. Older homes come with their own comfort challenges, and we know them well.

  • Hot-water boilers and radiators: we service, repair and replace boilers, including high-efficiency condensing and combi boilers.
  • Homes without central air: ductless heat pumps add efficient cooling and heating without tearing open plaster walls.
  • Old chimney-vented equipment: upgrading to a high-efficiency furnace or water heater usually means new PVC venting, and sometimes lining or abandoning the chimney.
  • Undersized ductwork: we design and fabricate custom ductwork for renovations and additions.

Local service

HVAC service across Dundas

HVAC services in Dundas

Postal codes
L9H
Electricity
Alectra Utilities
Natural gas
Enbridge Gas
From our office
About 21 km

What we see in Dundas homes

  • About 67% of Dundas homes were built before 1981, and 34% before 1961, one of the oldest housing stocks we serve. (source)
  • Dundas sits in the valley at the foot of the Niagara Escarpment, and the protected Dundas Valley has kept most homes in established, older neighbourhoods. (source)

Electricity is supplied by Alectra Utilities and natural gas by Enbridge Gas.

Thinking about a heat pump? See current heat pump rebates for Dundas homeowners.

Call 905-388-3333 Book service in Dundas

Products we install

Compare all furnaces
  • Trane Premier 96 M – 96 Modulating Variable Speed Gas Furnace Premium
    Trane

    Furnace

    Trane Premier 96M Modulating Gas Furnace

    Model TUHMB060 / TUHMB080 +6

    AFUE rating of up to 97.3%. Fully modulating gas heat with variable-speed blower for consistent, precise warmth. Formerly the Trane XC95m.

    AFUE
    97.3%
    Stages
    Modulating
    Blower
    Variable
    View details
  • Goodman GRVM97 Modulating Gas Furnace Premium
    Goodman

    Furnace

    Goodman GRVM97 Modulating Gas Furnace

    Model GRVM97 / GDVM97

    Self-calibrating modulating gas valve. Integrated communicating ComfortBridge™ Technology.

    AFUE
    97%
    Stages
    Modulating
    Blower
    Variable
    View details
  • Trane Premier 97 – 97 Two-Stage Variable Speed Gas Furnace Premium
    Trane

    Furnace

    Trane Premier 97 Two-Stage Variable-Speed Gas Furnace

    Model S9V2B040D3VSB* / S9V2B040U3VSB* +9

    97% AFUE. Two-stage gas valve runs on 'low' as often as possible for quieter, more even heat. Formerly the Trane S9V2-VS.

    AFUE
    97%
    Stages
    Two-stage
    Blower
    Variable
    View details

Dundas heating and cooling questions

Can you install central air in an older Dundas home without ductwork?

Yes. Ductless mini-split heat pumps need only a small opening for the refrigerant line, so they're ideal for older homes heated by boilers or baseboards. High-velocity and custom duct systems are other options.

Do I need a permit to replace my furnace in Dundas?

Dundas is part of the City of Hamilton, which lists replacing a furnace as work that doesn't need a building permit; new or replacement ductwork does. See the City of Hamilton permit page.

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What Our Customers Say

The team at Lancaster took care of our new furnace, and the service was outstanding. Great job!

Hannele Lavemaa Google review · June 2025

Lancaster Heating & Cooling never disappoints! Our family has been dealing with them for a number of years and every experience is a WOW moment! My AC stopped working last night and of course I called Lancaster. Today it is working again – thanks to Rob, who has done an excellent job every time when I need something, whether it is diagnosing, fixing or installing a new AC or furnace. This is THE COMPANY you can trust for all your heating and cooling needs! Thank you again Lancaster for your great service and customer experience!

Bryan Google review · April 2025
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