Trusted HVAC & mechanical experts
Comfort
builds
communities.
From your family’s furnace to complex commercial and industrial systems, count on local expertise that keeps people comfortable.
Local
& established
Since 1988
Experienced
& trusted
Across every scale
Service &
maintenance
Keeping systems running
HVAC & refrigeration services
Heating. Cooling.
Mechanical.
A new installation, an equipment breakdown or a maintenance plan: our Cambridge team handles heating, cooling, refrigeration and ventilation for homes and businesses.
Residential
Furnaces & air conditioning
Heat pumps
Boilers & hot water systems
Ventilation
Maintenance & service
Industrial
Industrial HVAC
Refrigeration
Make-up air & exhaust systems
Equipment-room cooling
Indoor pool dehumidification
Based in Cambridge, serving Kitchener–Waterloo and Southwestern Ontario. Our residential and condominium services also cover Guelph–Wellington, Brantford and Paris.
Heating, cooling & ventilation
See the systems we service.
From the furnace in your home to the rooftop equipment at your business, see how the systems connect—and where Denaeyer can help. Choose a building below.
Home
Comfort, room to room.
From a furnace repair to a planned heat-pump upgrade, we install, repair and maintain the heating, cooling and hot-water equipment your home relies on.
Condominium
Every suite. The whole building.
Individual suite systems and shared building equipment need different care. We support owners, property managers and condominium corporations with heating, cooling and ventilation.
Commercial & industrial
Built around the way you work.
From office climate control to industrial air heaters and exhaust systems, we install, repair and maintain the equipment that supports your building’s daily operation.
A local company with deep roots
Built here.
Trusted here.
Since 1988, our family-run business has helped homeowners, businesses and communities across Waterloo Region and Southwestern Ontario feel comfortable. We believe in doing quality work, building lasting relationships and showing up when it matters.
1988
Established locally
CARE
Service & maintenance
ONE
Experienced team
STRONGER
Communities
A look at our work
Real work. Lasting impact.
The Denaeyer difference
Good people.
Work that lasts.
“Local” means more than a place on the map. It means people you can reach, experience you can rely on, and care that continues long after the installation.
Family-run since 1988. Fully licensed and insured.
Google reviews
Real experiences. In their words.
A few words from people who have worked with Denaeyer.
4.6 out of 5 From 34 Google reviews
Denaeyer Mechanical has provided excellent, timely and affordable service each and every time we have needed it. We have needed service on our furnace on two occasions. We have been extremely pleased with their immediate response and their respectful and courteous service. I would recommend Denaeyer…
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Denaeyer Mechanical has provided excellent, timely and affordable service each and every time we have needed it. We have needed service on our furnace on two occasions. We have been extremely pleased with their immediate response and their respectful and courteous service. I would recommend Denaeyer to anyone!!!!
BEST service! Our heating stopped working (on a very cold day) and they fixed it quickly. They went out of their way to make sure they could get the proper parts and were highly knowledgeable. Price was great and more than worth it too! HIGHLY RECOMMEND!
We used Denaeyer to supply and maintain two furnaces in our condo for 10 years. One of the best HVAC companies we have dealt with in all our time in Waterloo Region! We had a last minute furnace repair on the closing date of our condo…
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We used Denaeyer to supply and maintain two furnaces in our condo for 10 years. One of the best HVAC companies we have dealt with in all our time in Waterloo Region! We had a last minute furnace repair on the closing date of our condo sale which was a bit stress-inducing, but Luke, Kim, Tyler were fabulous! Luke and his team truly live and breathe a ‘customer first’ philosophy!
Denaeyer came recommended to us from a property manager. They replaced a residential air conditioner and also installed a heat pump for climate control in a finished loft in our home. They have since attended for an unrelated furnace service call – they found and repaired…
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Denaeyer came recommended to us from a property manager. They replaced a residential air conditioner and also installed a heat pump for climate control in a finished loft in our home. They have since attended for an unrelated furnace service call – they found and repaired the problem efficiently. All the staff that have been in our home for the various projects were professional, knowledgeable, mindful of cleanliness and pleasant to deal with. I've used other mechanical contractors prior to working with Danaeyer but have found they have superior service yet are competitively priced. Highly recommend.
We went with Denaeyer Mechanical for a couple jobs at a home we just purchased. We had them install a water softener and assess our furnace for a leak we noticed. The water softener was great – they came in, did the work, gave us some…
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We went with Denaeyer Mechanical for a couple jobs at a home we just purchased. We had them install a water softener and assess our furnace for a leak we noticed. The water softener was great – they came in, did the work, gave us some bags of salt to get started, and everything was very smooth. We actually had an issue with the water softener only a couple months later (at no fault of theirs). Within a days notice, they came back and replaced the whole unit at no additional cost – we were very impressed how quick they handled the situation. We've had no issues since. The leak we noticed with the furnace was addressed. They cleaned up some areas and diagnosed the source of the leak, which part needed to be replaced, and corrected it. I have found everyone I've worked with to be very friendly, knowledgeable and professional. Would highly recommend to friends and family!
Your experience matters
Good work starts with
listening.
Worked with Denaeyer? We’d love to hear about your experience. Your feedback helps our team and helps others find the right support for their home or business.
An honest review makes a difference. Thank you for sharing yours.
Ready to get started?
Let’s talk about your project.
Get in touch for a consultation and a detailed quote. We’re here to help you find the right solution — big or small.
Talk to our team
Proud suppliers of
Quality brands.
Lasting solutions.