# Professional HVAC Service in Dundas

> Lancaster Heating and Cooling installs, services and repairs furnaces, boilers, air conditioners, heat pumps and water heaters in Dundas. About 67% of Dundas homes were built before 1981, so we often help with older boilers, limited ductwork and ductless upgrades. Call 905-388-3333 for 24/7 service.

Source: https://lancasterheatingandcooling.ca/service-areas/dundas/
Last updated: 2026-10-31

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](https://lancasterheatingandcooling.ca/heating/boilers/), including high-efficiency condensing and combi boilers.
- **Homes without central air:** [ductless heat pumps](https://lancasterheatingandcooling.ca/heat-pumps/ductless/) 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](https://lancasterheatingandcooling.ca/heating/furnace-replacement/).
- **Undersized ductwork:** we design and fabricate [custom ductwork](https://lancasterheatingandcooling.ca/ductwork/fabrication/) for renovations and additions.

## 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](https://www.hamilton.ca/build-invest-grow/construction-renovation/residential-building-renovation/building-permit).

## Customer reviews

> "The team at Lancaster took care of our new furnace, and the service was outstanding. Great job!" — Hannele Lavemaa, Google, 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, April 2025

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**Lancaster Heating and Cooling** — HVAC contractor serving Hamilton, Niagara and surrounding areas since 1955.
Phone (24/7 emergency): 905-388-3333 · Email: info@lancasterhvac.ca
Address: 1250 Stone Church Rd. E, Hamilton, ON L8W 2C8, Canada · Hours: Monday – Friday: 8:00AM – 4:30PM
Request a quote: https://lancasterheatingandcooling.ca/quote/