Best HVAC Contractors near Waterdown, ON

2 of these companies are based in Waterdown; the others serve Waterdown from towns including Hamilton (9 km), Oakville (22 km) and Burlington (8 km).

12 open 24/7 · all 15 open weekends · all 15 rated 4.5+ · 4 show a licence

Data verified November 11, 2026

Airtemp Hvac Furnace and Air Conditioner

Airtemp Hvac Furnace and Air Conditioner

5.0 115 reviews
“I couldn't be happier with the service and would gladly recommend them to anyone looking for a new HVAC system.”
24/7 emergency serviceServes Burlington, Hamilton +7Free consultationLicensed
26 Niska Dr
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Family Hvac Inc

Family Hvac Inc

4.9 102 reviews
“Came to my house to replace my old furnace did in timely manners and very nice and clean job”
Free consultationOpen 24 hoursSince 2023
20 McMonies Dr
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Dynamic Heating & Cooling

Dynamic Heating & Cooling

5.0 143 reviews
“The team at Dynamic were very helpful, they offered several options for our HVAC replacement and detailed information.”
10-yr warranty24/7 emergency serviceFinancing availableFamily-ownedFree consultation
Hamilton, ON · 9 km from Waterdown
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Precision Hvac Mech Inc

Precision Hvac Mech Inc

4.9 125 reviews
“Very pleasant experience with Leaford technician, where he quickly identified the problem with our heat pump.”
Coupons & offersSince 2018Financing
Oakville, ON · 22 km from Waterdown
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Aire One West Heating & Cooling

Aire One West Heating & Cooling

4.8 139 reviews
“Very happy with this company and would use again and would recommend”
$50 off duct cleaningInsured & bonded24/7 emergency service100% satisfaction guarantee0% financingSince 1990
Hamilton, ON · 9 km from Waterdown
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Hamco Heating and Cooling Ltd.

Hamco Heating and Cooling Ltd.

4.8 144 reviews
“Many thanks to Derek of Hamco for his thorough work of servicing our 40 year old residential boiler..”
Free estimatesFinancing availableSince 1946Serves Hamilton, Burlington, OakvilleFamily-ownedMaintenance plans
Hamilton, ON · 9 km from Waterdown
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The 15 companies listed for Waterdown, 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: Waterdown, ON

The 15 companies on this page are rated from 4.7 to 5.0 across 40,582 reviews; all 15 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (90%), punctuality (80%) and quality (80%). The topics that come up most in reviews of the companies on this page are "efficient", "price" and "cleanliness". 12 are open around the clock; all 15 are open on Saturdays and 14 on Sundays. 4 show a licence on their websites. Domain records put 3 websites of the companies on this page at ten or more years old; the oldest dates from 2005. 14 offer emergency call-outs; 8 offer financing or payment plans; 10 give free estimates; 4 are family- or locally-owned and 9 list coupons or special offers. We have a website on file for all 15 of the companies on this page; 14 publish a contact page; 13 list a public email and 4 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.

Why do some of these firms show another city?

2 of the 15 companies have an address in Waterdown; the rest come from other towns within 25 km. Crews drive to the job, so the address matters less than whether they answer calls in your area in winter.

Appleby Systems Heating & Cooling

Appleby Systems Heating & Cooling

4.8 135 reviews
“He made everything easy and smooth, and I truly appreciate his outstanding customer service.”
Free estimatesLicensed24/7 emergency serviceFinancing availableSince 1967Family-owned
Oakville, ON · 22 km from Waterdown
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Shipton's Heating & Cooling Ltd

Shipton's Heating & Cooling Ltd

4.8 140 reviews
“We had our furnace have its Fall inspection by Shiptons and Stephen the Tech, was punctual and professional.”
Free service call offerLicensed24/7 emergency service100% satisfaction guaranteeFinancing availableSince 1924
Stoney Creek, ON · 18 km from Waterdown
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Book onlineBook
Spurr Heating & Air Conditioning

Spurr Heating & Air Conditioning

4.9 130 reviews
“We've used Spurr for any years for our furnace/AC maintenance and repairs.”
15+ yearsServes Hamilton, BurlingtonMaintenance plansLicensedOpen 24 hoursFinancing
Hamilton, ON · 9 km from Waterdown
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B & G Heating & Cooling

B & G Heating & Cooling

4.7 67 reviews
“We were provided very quickly with a new tank and the two technicians that installed the tank were on time, courteous, polite, and got the job done quickly.”
Coupons & offersOpen 24 hoursFamily-ownedFinancing
Hannon, ON · 20 km from Waterdown
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Smith Heating & Cooling

Smith Heating & Cooling

5.0 90 reviews
“The services (furnace maintenance and gas fireplace repair) were done very well and Nathan was very accommodating in scheduling them around my own schedule.”
Free consultationOpen 24 hours
Dundas, ON · 9 km from Waterdown
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Reliance Home Comfort

Reliance Home Comfort

4.8 87 reviews
“On time , very knowledgeable, courteous, professional and answered all questions and provided solutions.”
Coupons & offersOpen 24 hoursSince 2005
Burlington, ON · 8 km from Waterdown
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Danlex Gas

Danlex Gas

5.0 88 reviews
“He doesn't try to sell you anything other than what you called him for.”
Free estimates24/7 emergency serviceSince 2014
Oakville, ON · 22 km from Waterdown
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Nik Hvac Heating and Cooling

Nik Hvac Heating and Cooling

4.9 50 reviews
“I called Nik 10pm in a holiday weekend, He showed up in 30 min and had my my A/C fixed quickly .”
Free consultationEmergency service
Hamilton, ON · 9 km from Waterdown
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Abbey Air Home Services by Enercare

Abbey Air Home Services by Enercare

4.9 127 reviews
“Zowak Nizay and Raza Abid installed a tankless water heater in my home, they did a good job, although it took longer than what the sales team had mentioned”
Coupons & offersFree estimates1-yr warrantyServes OakvilleMaintenance plansLicensed
Burlington, ON · 8 km from Waterdown
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Why these companies made our list

What customers say about companies near Waterdown

  • “Would recommend using this company to anyone that needs furnace/thermostat repair.” — customer of Family Hvac Inc
  • “Technician ANDREW serviced my furnace today. Highly knowledgeable, honest, cheerful, professional and customer service oriented.” — customer of Appleby Systems Heating & Cooling
  • “The technician took the time to clearly explain every step of the furnace replacement, provided regular updates, and was very respectful of our home throughout the process.” — customer of Precision Hvac Mech Inc
  • “Allan did our furnace maintenance today. He was very professional and friendly.” — customer of Abbey Air Home Services by Enercare
  • “Nathan was very responsive to my inquiry re: humidifier for our furnace.” — customer of Smith Heating & Cooling

Excerpts from public reviews of the companies listed on this page.

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