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Taking CallsVerifiedHVAC Companies in Waterloo, Ontario

Dunn Heating and Air Conditioning

Taking Calls in Waterloo Today 4.80 (1,000 reviews)(226) 770-5265

Dunn Heating and Air Conditioning provides HVAC and plumbing services from its Waterloo base. It has provided HVAC services throughout Waterloo Region since 1973 and offers 24/7 emergency HVAC service.

Business Highlights
  • Its technicians are licensed and trained to service major HVAC systems.
  • Its technicians complete training, certifications and background checks.
  • It is an authorized Lennox® dealer.
  • It lists TSSA licence FS R0038598001.

Service Area

Baden, Elora, Fergus, Guelph, Waterloo, Cambridge, Conestogo, Kitchener, Elmira, St. Jacobs, Linwood, New Hamburg, Heidelberg, Rosendale, Wallenstein, Bloomingdale, St. Clements, Winterbourne and West Montrose.

Taking calls through ProsGrade. Dunn Heating and Air Conditioning is one of 6 HVAC companies ProsGrade lists in Waterloo, Ontario.

Listing details

11 services listed, including Furnace installation, Furnace repair and Boiler services. Open 24 hours, 7 days a week. Rated 4.8 from 1,000 reviews.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How Dunn Heating and Air Conditioning compares with the other 5 HVAC companies on ProsGrade in Waterloo, using public Google ratings and review counts.

  • Has the most Google reviews (1,000) of the 6 Waterloo HVAC companies on ProsGrade.
  • One of 5 Waterloo HVAC companies on ProsGrade rated 4.7 or higher from at least 10 reviews.

Trust Signals

24/7 availability listed; call for current response times.

Services Covered

11 services
  • Furnace installationPrecise sizing and configuration of high-efficiency furnaces
  • Furnace repairAll makes and models; 24/7 urgent repairs
  • Boiler servicesSteam and hot-water systems; installation, servicing and emergency repair
  • Heat pump servicesYear-round installation and servicing for heating and cooling
  • AC installationSizing, placement and installation
  • AC inspectionInspections for potential issues before system failures
  • AC repairAll models; emergency repairs
  • UV air purifiersInstallation and care for HVAC-integrated systems
  • HumidifiersWhole-home setup and maintenance
  • Water heater installationOld-unit removal and setup of energy-efficient replacements
  • Water heater repairAll types and brands

Reviews

What customers say

Customers praise the crews' professional, courteous manner, and installation accounts mention old equipment removal and tidy cleanup. One customer reports that the heat stopped within an hour of a replacement thermostat; a technician restored the furnace that evening, but the customer was then told another visit was needed to move a safety switch, which they described as a fifth service call. Another customer says Dunn restored heating quickly after a furnace failure but was disappointed by how the finished venting looked at the front of the house.

Customer Reviews

Alison Dearlove

I was really excited to purchase a new heat pump and furnace and humidifier from Dunn Electrical. The day of install went well. The team arrived and worked hard until 8pm. They were kind and clean. My thermostat however was not connecting to the heat pump properly. I was told they would have to come back another day to connect it. Kind of annoying as I would need to be off work and available for them to attend my house again but these things happen. 3 days later they came back and installed a new thermostat. Everything seemed to be working properly so they left. Again they were very pleasant to deal with. Within an hour I noticed the heat wasn’t working. Only the fan was running. I tried some adjustments but nothing worked. Around 1pm I called Dunn and explained the situation. They told me that they could come the next day. I said no way. I had a working furnace until they came and now I had no heat and it was 11 degrees in my house. I’m a single mom with a child and pets and the need to have someone comeback and fix what they messed up. At 8pm someone came. He was able to fix the furnace so it was running again. The told me someone would have to come back the next day to fix something. I had to arrange someone to be at my home the next day for a technician to come again. That evening I received a call yah a technician would have to come to move a safety switch. Well now I was annoyed. I work Monday to Friday and was annoyed about a 5th service call. I set up the appointment for a week away when I could have someone at my house for me. 2 days later I luckily went to my basement and found water leaking near my water heater. Upon inspection I saw that it was coming from the tubing for my newly installed humidifier. I called Dunn yet again and they set up an appointment for the next day which I again had to arrange someone to be at my house for. I was able to put a bucket under the leak otherwise there would have been a huge amount of water. They came the next day to fix that leak. Again. The technician was very nice and helpful. Today they came to fix the switch I was told needed to be moved. The technician came and had no idea what needed to be done. The person from Dunn who called and told me this switch needed to be done had told me they would have all the information in the service ticket. Not the case since the technician that came didn’t know what was supposed to be done. So another day I had to arrange for someone to be at my house wasted. Also several days after the removal and install process a ton of screws and drill bits were found in my driveway where the Dunn truck had been parked. Fortunately I didn’t get any in my tire! Overall a very unpleasant experience with this company. I gave two stars only because everyone I have spoke to have been kind, and pleasant to deal with. There are so many HVAC companies. Find another one
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Dylan Groves

From top to bottom, the folks at Dunn did a magnificent job outfitting me with a new furnace. Henrik was able to revive my old one long enough to keep me from freezing (important!); Josh explained my options very clearly, giving me great advice about the best long-term solution for my home, and answering my questions with friendly enthusiasm; Tanner and Alai were willing to come to my place early on a Saturday, and thanks to their hard work the new furnace was up and running in less than 3 hours. The whole team was excellent--professional, courteous, skilled--and the price was very competitive. Dunn's the one!
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Myles MacInnes

Converted from a tank water heater to a tankless model. Dunn was easy to work with and the install went really well. The old tank was taken away and work site was neat and tidy. Thanks to Tanner and Alai for their work, and thanks to Darren for his quick response to my request for a quote. Dunn has an excellent team.
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Frequently Asked Questions

How quickly does Dunn Heating and Air Conditioning handle repairs and installations?

It offers same-day repairs and next-day installations.

What does Dunn Heating and Air Conditioning check when diagnosing an HVAC problem?

Its diagnostics check for refrigerant leaks, thermostat issues, airflow restrictions and electrical problems. The company says it explains the findings and provides upfront pricing; financing and payment plans are available.