Infiniti Home Comfort
“From my many calls with Chris the Sales Manager to Janine the behind the scenes magician who helped get the installation set up quickly, right down to the three fabulous fellows who did the install for my elderly mom.”
Best HVAC Contractors in Whitby, ON
15 companies listed · 10 in Whitby · 7 open 24/7 · 11 open weekends · all 15 rated 4.5+
Data verified October 21, 2026
Plumbing & Heating Heroes
“He was friendly, professional and fixed our problem despite the fact the faucet had snapped apart within the fixture.”
Limcan Certified Heating and Air Conditioning
“I can truly say this company is quite reputable and they do take their business serious which I truly appreciate.”
Taunton Trades Ltd
“Efficient responses, thorough clarification on the issues and the HVAC requirements needed to solve the problem and a pleasant and respectful manner when working in our home.”
Aire One East
“He and the installers were on time and Tony even stopped by for an inspection of the job once it was complete.”
Propel Heating and Cooling
“The team offered us great suggestions and options to make our home's HVAC system worked more efficiently, and we will certainly share this company with our friends to use when needed.”
The 15 companies listed for Whitby, ON handle furnaces and heat pumps in winter and the cooling side in summer. Profiles repeat what each firm publishes about hours, licensing and brands, with ratings and review quotes gathered from public reviews.
Area overview: Whitby, ON
10 of the 15 companies we list are based in Whitby; the other 5 serve Whitby from Oshawa (8 km) and Ajax (8 km). The companies on this page are rated from 4.5 to 5.0 across 5,596 reviews; 12 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (93%), responsiveness (82%) and quality (79%). The topics that come up most in reviews of the companies on this page are "price", "efficient" and "estimates". 7 are open around the clock; 10 are open on Saturdays and 10 on Sundays. The services the companies on this page list most often on their websites are air conditioners (2), duct cleaning (2), furnaces (2), heat pumps (2) and water heaters (2). 4 show a licence on their websites. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 8 offer emergency call-outs; 4 offer financing or payment plans; 7 give free estimates; 2 are family- or locally-owned and 4 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Which companies listed for Whitby answer no-heat calls at night?
Round the clock cover is stated in 7 of the 15 listings here. On a winter night that call is worth making early, because a house left without heat can freeze pipes before morning. Expect a temporary fix and a return visit once parts are available.
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Lazzaro Gas Hvac
“I highly recommend Lazzaro Gas and will definitely be utilizing their services again for all our heating and cooling needs.”
Doug Scott Heating and Cooling
“It took him less than an hour to work out the issue, order the part and returned the next day to fix it”
South Service Heating & Air Conditioning Inc.
“Trustworthy, professional, honest Mike & Abdul installed my new Heat Pump with a "Sensi Touch 2 Smart Thermostat".”
WHC Heating and Cooling
“Over the years I have used Erik and his team for issues relating to my furnace, A/C unit and pool heater.”
Rodman's Heating & Air Conditioning
“As you know, we have been with Rodman's for many years and I would not hesitate to recommend you, as always”
Active Climate Mechanical
“In addition to providing impeccable service, Logan went the extra mile by thoroughly explaining every aspect of the installation process and ensuring that all systems operated seamlessly.”
LFZ Heating & Cooling
“Laiq made a quick job out of diagnosing and fixing our Freon deficiency.”
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Air Pro Heating and Air Conditioning Services
“We highly recommend this company and we will call on them again in the future.”
Max Comfort Heating & Cooling
“We ended up having a new furnace installed at a fair price and the work was done quickly and professionally.”
Why these companies made our list
What customers say about companies in Whitby
- “Fred answered all my questions, provided prompt accurate quotes and was at my door the next day with a new furnace.” — customer of Infiniti Home Comfort
- “Great communication, on time, professional and knowledgeable. He also gave me the part number for my difficult to find furnace filter.” — customer of Taunton Trades Ltd
- “Doug was honest and very personable! He was able to make it on relatively short notice and fixed the issue with my furnace.” — customer of Doug Scott Heating and Cooling
Excerpts from public reviews of the companies listed on this page.
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