Gillanders
“A huge thank you to Gillanders for their quick service, their ability to see past the obvious "buy a new water heater" suggestions and their willingness to actually look to see what might be causing the issue.”
Best HVAC Contractors in Chatham, ON
11 companies listed · 7 in Chatham · 1 open 24/7 · 4 open weekends · 10 rated 4.5+
Data verified October 18, 2026
Postma Heating and Cooling
“We had a clogged drain this morning but Kyle G was able to fix it quickly with a smile!”
QPS
“He was very knowledgeable and I will recommend him highly to others.”
Gas Doctor Fireplace Service and Repairs
“In addition to his skills and professionalism, I completely trust him to complete proper repairs and also a huge factor, to be in my home without having to stress or worry about my contents or safety!”
Scott Mechanical
“Brandon and team did a great job on our heat pump installation.”
O'Phee Mechanical Ltd
“Had a plumbing issue and had Jesse from O'Phee come by to fix it.”
The 11 companies listed for Chatham, 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: Chatham, ON
7 of the 11 companies we list are based in Chatham; the other 4 serve Chatham from towns including Blenheim (6 km), Chatham-Kent (15 km) and Ridgetown (17 km). The companies on this page are rated from 3.9 to 5.0 across 5,099 reviews; 4 have 50 or more reviews and 10 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (89%), responsiveness (86%) and punctuality (82%). 1 is open around the clock and 4 are open on weekends. 2 show a licence on their websites. 6 have ten or more years of experience, the longest 26 years. 2 offer emergency call-outs; 6 offer financing or payment plans; 1 gives free estimates; 2 are family- or locally-owned and 2 list coupons or special offers. We have a website on file for all 11 of the companies on this page; 10 publish a contact page; 8 list a public email and 3 take bookings online. 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.
Do any heating firms listed for Chatham work on Saturdays or Sundays?
Saturday or Sunday hours show up for 4 of the 11 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.
Habib Mechanical
“The service was excellent from start to finish—he explained everything clearly, did clean and tidy work, and made sure everything was running perfectly before leaving”
GTR Mechanical Services Inc.
“Was near impossible to fix the same day but they went above and beyond in more ways then one to get us some sort of heat in the house knowing we were away on vacation the next day.”
Handy Bros. Home Comfort
“Cleans everything, tests everything, answers questions and makes sure everything is working well.”
McFadden Heating & Cooling
“When he finished, he gave me a lesson on how to operate it, cleaned up any mess he made, and left.”
R M Heating & Cooling
“Both times they were on time, very courteous and personable and finished ahead of schedule.”
Why these companies made our list
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