Dynamic Heating & Cooling
“I would highly recommend Dynamic Heating and Cooling to anyone who's looking for a great product and exceptional service”
Best HVAC Contractors in Hamilton, ON
23 companies listed · all 23 in Hamilton · 11 open 24/7 · 19 open weekends · 21 rated 4.5+
Data verified October 21, 2026
Hamco Heating and Cooling Ltd.
“Tara helped direct me to the right person for ordering a hot water heater which was installed by Adam and Veronika.”
Shipton's Heating & Cooling Ltd
“Wes was my technician again and was amazing as usual thank u 😊 This recent visit I had Owen who was great at explaining everything and was very thorough …”
Book onlineBook
Spurr Heating & Air Conditioning
“The sales rep, Bob delivered exceptional customer service and the technician, Spencer did an above and beyond exceptional job with the install.”
Book onlineBook
Canadian Heating and Air Conditioning Inc.
“Right from the Ac replacement consultation up to install and clean up the whole organization was very professional and timely.”
Aire One Heating & Cooling
“Their price was very competitive and based on our past good relationship with them over the years, we selected them for our new system.”
The 23 companies listed for Hamilton, 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: Hamilton, ON
All 23 companies we list here are in Hamilton itself. We have 37 companies in Hamilton on file; this page shows the highest-rated 23. The companies on this page are rated from 4.4 to 5.0 across 8,088 reviews; 11 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (82%) and responsiveness (80%). The topics that come up most in reviews of the companies on this page are "efficient", "price" and "cleanliness". 11 are open around the clock; 19 are open on Saturdays and 15 on Sundays. 7 show a licence on their websites. 4 have ten or more years of experience, the longest 21 years. 14 offer emergency call-outs; 6 offer financing or payment plans; 9 give free estimates; 8 are family- or locally-owned and 7 list coupons or special offers. We have a website on file for all 23 of the companies on this page; 20 publish a contact page; 15 list a public email and 1 takes bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Which companies listed for Hamilton answer no-heat calls at night?
Round the clock cover is stated in 11 of the 23 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.
A Rescue Rooter
“We are a high volume food court in Burlington and the job was completed without interruption in business.”
Greener Home Services
“Harry at Greener Home Services was extremely helpful and knowledgeable, he got us set up the with additional attic insulation that we desperately needed.”
Lancaster Heating & Cooling
“While on hold I called Lancaster for an AC issue and they called me back in under 5 minutes and then Daniel (amazing) showed up within an hour.”
Complete Heating & GAS INC
“He installed a gas line for me, and it was well priced and professionally done within the timeframe offered.”
Boonstra Heating and Air Conditioning
“He was very kind to my sons and even let them look at his tools and involved my older son in what he was doing so he could learn.”
Gasfix Inc.
“Prompt and responsive along with informative just what you want in a contractor...”
D.a.d. Hvac
“2nd time using DAD HVAC - they helped fix an issue with my gas line that was a bit challenging to identify.”
Fox Refrigeration & Hvac
“I would definitely recommend Fox to any of my friends and family.”
Nik Heating N Cooling
“We call for emergency call Nik team is very quick And they fixed our equipment.”
Tabreed Thermal Control
“He could solve the problem we have in our kitchen very quicly and fixed our Fridge water dispenser very efficiently.”
One Key Property Management
“I find she always listens with an open ear and helps to problem solve any concerns I have.”
Wireology Inc.
“He took as much time as was needed to address my issues and advise on the best possible solutions which is very much appreciated for someone like myself having limited knowledge and understanding of the process.”
All Mechanical Hvac/r
“He squeezed me in and in 2 days: he went to the house, inspected and the next day, he had his team in the house installing the AC.”
MY Hvac Guy
“Matt was quick to respond to my email, professional, knowledgeable, answered all of my questions, new AC unit installed quickly.”
Dr. Furnace Heating & Cooling
“Furnace, who comes over (same night), has a look and confirms that that the actual issue is something completely different (part replacement required still) and the cost would be about a quarter of what the last guy said...”
Advanced Mechanical
“Super responsive , showed up as expected and was able to fix the problem effectively and quickly.”
Beyond the Site
“Paul has been very knowledgable, efficient and went the extra for the renovation I had to do.”
Why these companies made our list
What customers say about companies in Hamilton
- “Dan was a fountain of knowledge and got our furnace into good working order in a timely and professional manner.” — customer of D.a.d. Hvac
- “Installation team showed up on time and were very professional and respectful of the house.” — customer of Lancaster Heating & Cooling
- “Steve made solid recommendations and his team was punctual, friendly, skilled and safe.” — customer of Dr. Furnace Heating & Cooling
- “Great team and extremely knowledgeable. Guided us on our heat pump purchase.” — customer of Hamco Heating and Cooling Ltd.
- “Zac’s team did a great job installing our furnace and air conditioner today, everything looks great and he ran me through everything when they were finished and answered all my questions.” — customer of Dynamic Heating & Cooling
Excerpts from public reviews of the companies listed on this page.
Is this page useful? Yes
No
Is there anything wrong with this page?
HVAC Contractors near Hamilton
Popular in Hamilton
, ONGuides: HVAC Contractors
Ontario CO Alarm Rules 2026: How Many You Need and Where
Central AC Replacement Cost in Canada: What You'll Pay
Furnace Replacement Cost in Canada: What You'll Pay
Furnace Smells Like Burning? What's Normal, What Isn't
Heat Pump Cost in Canada: Prices, Sizing and Rebates
How to Get Out of a Water Heater Rental in Canada