Best HVAC Service in Waterloo, ON

Handpicked Top 3 HVAC Services in Waterloo. Our 50-Point Inspection includes everything from checking reputation, history, complaints, local reviews, satisfaction, trust and cost to the general excellence. You deserve only the best!


2-595 Colby Drive, Waterloo, ON N2V 1A1

Since 1950

Furnace Service and Repair, Air Conditioning Service and Repair, Air Conditioning Maintenance and Replacement, Geo-Thermal Systems, Residential Heating, Cooling and Natural Gas, Electrical and Plumbing, Residential Indoor Air Quality, Residential Geothermal and Commercial Applications, Duct Design and Air Balancing & Commercial Heating

Free in home consultations - Get $25 Off the price of a new A/C when you book online - Free Quote



Mon - Fri 8:30 am - 4:30 pm Sat & Sun Closed

Definitely recommend going with Delta Air Systems if you are in the market for a new furnace or A/C unit. Working with Spencer from their sales department has been nothing but top notch! Had a new furnace and A/C installed by Delta today and the installers were very professional with a high quality of workmanship very evident in their installation. All though there are companies out there that will offer you a cheeper price, you definitely get what you pay for if you choose to go with Delta.
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75 Rankin Street, Waterloo, ON N2V 1W2

Since 1973

Heating Sales and Service, Heating Repair and Maintenance, Heating Installation, Air Conditioning Sales and Service, Air Conditioning Repair and Maintenance, Air Conditioning Installation, Fireplaces Sales and Service, Fireplaces Repair and Maintenance, Indoor Air Quality, Filtration, Humidification & Cooling

Free in Home Estimate - Financing available on approved credit - Serves in Kitchener-Waterloo, Cambridge, Guelph, Fergus, Listowel & New Hamburg


Mon - Thu 8:00 am - 5:00 pm Fri 8:00 am - 4:30 pm Sat 10:00 am - 2:00 pm Sun Closed

The team from Dunn Heating ClimateCare have been outstanding. We are extremely happy with the service and the work completed was exceptional. Very professional and we recommend their services without hesitation!
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7-597 Colby Drive, Waterloo, ON N2V 1A1

Since 2013

Heating, Goodman Furnaces, Unit Heaters, Tube Heaters, Cooling, Goodman Air Conditioners, Fireplaces, Kingsman Fireplaces, Continental Fireplaces, Water Softeners, Indoor Air Quality, Humidifiers, Ventilators, Air Cleaners and Filters, Gas Lines, Maintenance & Protection Plans

24 Hour emergency services available - Free-standing gas stoves from both Kingsman and Continental Fireplaces



Mon - Fri 9:00 am - 5:00 pm Sat & Sun By Appointment Only

Steadfast was an excellent company to work with! They installed so much in our new home and everything is working perfectly (AC, appliances, water softener, etc.). They were very efficient and really well priced. When we had an issue with our dishwasher they responded immediately and knew exactly what needed fixing and they even followed up to make sure everything was working properly! I highly recommend Steadfast Gas Services, and I will use them again in the future for sure!
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