About Dunn Heating and Air Conditioning
Reliable Heating, Cooling & Plumbing Services Since 1973
At Dunn Heating and Air Conditioning, we’ve been delivering dependable HVAC and plumbing solutions across Waterloo and the surrounding region for over five decades. Since the beginning, our goal has been quick response times, effective problem-solving, and quality workmanship that keeps your household systems operating smoothly.
Whether you’re facing a heating issue, cooling breakdown, or a plumbing concern, our team is available day or night to step in. We offer same-day service, work on all brands, and focus on delivering fast, efficient service with minimal disruption.
Modern Solutions Backed by Decades of Experience
From the days of coal and oil to today’s high-efficiency and smart home systems, Dunn Heating and Air Conditioning has grown alongside the industry. Our certified HVAC specialists and plumbers stay up to date with the latest technologies so we can provide up-to-date advice that works for both your comfort and your budget.
Whether you’re installing a heat pump, repairing a furnace, or clearing a clogged drain, you’ll get a team that comes prepared, experienced, and ready to get things running again.
Locally Based. Professionally Driven.
We’re not just another home service provider—we’re part of the community. With our headquarters in Waterloo and service extended throughout the region, including Kitchener, Cambridge, and beyond, our skilled team takes pride in delivering reliable service from the first call to the final result.
With Dunn Heating and Air Conditioning, you’re working with experienced pros who value your time, care about your home, and take pride in every job they do.
What Sets Dunn Heating and Air Conditioning Apart
Same-day repairs and next-day installations
24/7 emergency service available
Licensed, experienced technicians and plumbers
Clear communication and upfront pricing
Personalized solutions based on your home and comfort goals
Complete services in heating, cooling, plumbing & more
Serving Waterloo Region with dedication since 1973
What Homeowners Are Saying
See what customers across the Waterloo Region have to say about working with Dunn Heating and Air Conditioning. From urgent furnace issues to routine AC maintenance and plumbing help, we’re proud to deliver fast, knowledgeable service that gets things back to normal with ease.
He quickly found the issue and repaired it.
Thank you!
Today (June 25, 2026) we had Cory come to do maintenance on our air conditioning. He was exceptional! Wonderfully explained each step as he went along. Great customer service and very thoughtful to put the boot coverings on each time he entered the step. It was such a pleasure to meet him. Thank you Cory for all your hard work today!
Even just dropping the cheque off and the friendly conversation with the folks in the office made the experience great. We did the heat pump, furnace and tank less water.
Corey was very polite He knew his stuff
Very polite answer my questions
I would recommend
Thankyou
Areas We Serve
Dunn Heating and Air Conditioning offers heating, cooling, plumbing, and air quality services throughout the Waterloo Region, with responsive support in:
- Baden
- Elora
- Fergus
- Guelph
- Waterloo
- Cambridge
- Conestogo
- Kitchener
- Elmira
- St. Jacobs
- Linwood
- New Hamburg
- Heidelberg
- Rosendale
- Wallenstein
- Bloomingdale
- St. Clements
- Winterbourne
- West Monrose
Let’s Get Your Home Back on Track
When your home’s systems need quick, reliable attention, Dunn Heating and Air Conditioning is here. We’re available 24/7, offering flexible appointments and fast, effective solutions—because your comfort matters.
Call us at (226) 887-3052 or book your service online today.
