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24/7 home HVAC service in Guelph.

24/7 service for home heating, cooling, air quality & plumbing across the city of Guelph.

Settled in Ontario’s Wellington County and establishing itself as a hotbed of manufacturing and industry in the 1800s, Guelph has slowly & steadily grown into a comfortable place for students and families alike to call home.

And we want to help keep it that way: the home HVAC pros at Dunn Heating & Air are committed to your comfort, with 60 years of experience in providing home furnace, air conditioning, air quality & plumbing solutions.

Those include HVAC replacement & installation, 24 hour repairs (with NO EXTRA charge for after-hours or emergencies), and protection plans for longer-lasting systems and to help save money on your monthly bills.

Our techs take the time to ensure you don’t have to lift a finger to make the most of your home comfort. We handle everything from replacing your old system & installing your new one to ensuring you’re set up with everything you need for aftercare support.

When you need home heating, cooling, air quality or plumbing service in Guelph, there’s only one name to trust: the pros at Dunn Heating & Air.

Save up to $3,000 on a new home furnace in Guelph.

Upgrade your home heating and save up to $3,000 on your new system – plus, no payments and no interest financing available.

We make cost savings on home comfort easy.

No extra service fees or charges for home HVAC repair in Guelph.


Book a furnace or air conditioner repair any time of day, any day of the year, and get fast service with no extra fees or charges for after-hours, all-night, holiday and emergency service.

We never charge extra for repairs.

Midday, midnight or the middle of a holiday, our fees stay the same, no matter when you need our help.

Book a Home Heating Service With the Pros at Dunn Heating

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What Homeowners Say About Us

“After a weekend away we arrived home Sunday night with no AC. I called Dunn first thing Monday morning and had a technician here within the hour! He explained that the unit could either be repaired or replaced and gave us a quote. We decided to replace the unit and that same morning they had a crew here installing it! The installers were friendly, neat, professional and skilled.
Very happy with Dunn and would recommend.

Dunn Heating