Best HVAC Contractors in Kitchener, ON

24 companies listed · all 24 in Kitchener · 15 open 24/7 · 18 open weekends · 21 rated 4.5+

Data verified October 21, 2026

Advance Heating & Cooling KW

Advance Heating & Cooling KW

5.0 136 reviews
“Vincent did a great job outlining all the options and we went ahead with confidence!!”
Coupons & offersOpen 24 hoursFinancing
44 Otonabee Dr
i
Unique Air

Unique Air

4.9 130 reviews
“Called and under two hours furnace was fixed up and running amazing service top notch”
Coupons & offersFree consultationOpen 24 hoursSince 2018
533 Queen St S
i
Able Air Conditioning & Heating

Able Air Conditioning & Heating

5.0 129 reviews
“Sam was excellent - the whole process from booking to service was seamless.”
Coupons & offers24/7 emergency service0% financing25+ yearsServes Kitchener, Waterloo +2Licensed
1501 Victoria St N
i
Total Aire Care Inc.

Total Aire Care Inc.

4.9 128 reviews
“They took the time to explain things to me and answered all of my questions thoroughly.”
24/7 emergency serviceServes Waterloo RegionMaintenance plans
299 Manitou Dr A
i
Arthur's Heating & Cooling

Arthur's Heating & Cooling

4.9 92 reviews
“We would like to thank Arthur for his assistance this AM, with our furnace blower.”
Emergency serviceSince 2009
49 Medford St
i
Air Comfort Mechanical Inc.

Air Comfort Mechanical Inc.

5.0 136 reviews
“Been using them for a decade now and I have never had any complains.”
Coupons & offersFree estimatesTSSA licence #0000284487Insured up to $2MServes Waterloo Region, Brant +3Open 24 hours
565 Trillium Dr Unit 6
i

The 24 companies listed for Kitchener, 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: Kitchener, ON

All 24 companies we list here are in Kitchener itself. We have 28 companies in Kitchener on file; this page shows the highest-rated 24. The companies on this page are rated from 3.7 to 5.0 across 15,469 reviews; 13 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 (81%), responsiveness (81%) and quality (68%). The topics that come up most in reviews of the companies on this page are "price", "estimates" and "efficient". 15 are open around the clock; 18 are open on Saturdays and 17 on Sundays. The services the companies on this page list most often on their websites are water heater (3), cooling (2) and furnace (2). 3 show a licence on their websites. Domain records put 2 websites of the companies on this page at ten or more years old; the oldest dates from 2009. 19 offer emergency call-outs; 5 offer financing or payment plans; 9 give free estimates; 4 are family- or locally-owned and 6 list coupons or special offers. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.

Do any heating firms listed for Kitchener work on Saturdays or Sundays?

Saturday or Sunday hours show up for 18 of the 24 companies on this page. Saturday is mostly repair work; installations land on weekdays, because supply houses and municipal inspectors keep weekday hours.

Infiniti Air Conditioning & Heating

Infiniti Air Conditioning & Heating

4.9 133 reviews
“They're on time, professional on the job they do and in the communication with the customer”
Licence #313A14,743 customers servedServes Kitchener–Waterloo, Waterloo Region +2Family-ownedSince 2011Financing
1268 Victoria St N
i
Air Expert Home Comfort Inc

Air Expert Home Comfort Inc

4.7 110 reviews
“We contacted them during a heat wave and they installed an AC unit for us within two days.”
Free estimatesFinancing availableServes KitchenerOpen 24 hours
#B, 334 Manitou Dr
i
Regional Air

Regional Air

4.9 110 reviews
“Our furnace was not working properly and the very next morning he installed a new furnace for us!”
Free estimates24/7 emergency service30+ yearsServes Kitchener, Waterloo +2Family-owned
675 Queen St S
i
Book onlineBook
Aire One Heating & Cooling KW

Aire One Heating & Cooling KW

4.8 124 reviews
“Excellent efficient service as always by Dave C a knowledgeable personable technician.”
$50 off diagnostic call couponFree estimates24/7 emergency serviceSince 1990Serves Kitchener, Waterloo +6Maintenance plans
1069 Victoria St N
i
BAU Mechanical Inc.

BAU Mechanical Inc.

4.9 51 reviews
“Brad & the team at BAU are highly skilled, professional & very personable.”
Free estimatesFinancing availableServes Kitchener, Waterloo +3Emergency service
150 Alpine Rd
i
Elevate AIR

Elevate AIR

5.0 52 reviews
“Jan is honest, fair, trust worthy, hard working and definitely the person I want on the job!”
Open 24 hours
425 Wilson Ave
i
365 Heating

365 Heating

4.7 119 reviews
“During our routine annual maintenance he made sure everything was running in top condition.”
Coupons & offersOpen 24 hoursSince 2023Financing
107 Manitou Dr #12
i
Air Pro Services

Air Pro Services

4.8 26 reviews
“Pavel and his team installed a cold climate heat pump for me today.”
Free consultationInsured24/7 emergency service1,000 homes served25+ yearsServes Kitchener, Waterloo +6
140 Country Clair St
i
Stemerdink Services Ltd

Stemerdink Services Ltd

4.4 36 reviews
“We are very pleased and would wholeheartedly recommend Stemerdink for your electrical and venting needs.”
Free estimatesTSSA licence #00766098091-yr warranty24/7 emergency serviceSince 1997Serves Kitchener, Waterloo +2
232 Madison Ave S
i
Moe Heating & Air Conditioning Systems

Moe Heating & Air Conditioning Systems

5.0 10 reviews
“He is licensed and very skilled with HVAC but can also do other handy work.”
Free consultationOpen 24 hours
600 Greenfield Ave #502
i
Apex Home Comfort

Apex Home Comfort

5.0 19 reviews
“I recommended them to my friend and they installed AC quickly too.”
Emergency service5+ years
481 Thomas Slee Dr
i
Adil Hvac Services

Adil Hvac Services

5.0 23 reviews
“It took him 11 pm night to finish our job, but he did it, didn't leave it in middle.”
Open 24 hours
5 Maurice St #2
i
Sierra Comfort Services

Sierra Comfort Services

5.0 12 reviews
“We had Sierra Comfort team Instal a furnace and air conditioning unit in our house.”
Free consultationFamily-owned
919 Strasburg Rd
i
Roberts Onsite

Roberts Onsite

5.0 3 reviews
“Anything you want, they can make it happen”
Licensed (TSSA)QPS-certifiedOpen 24 hours
209 Manitou Dr
i
Davis Mechanical Heating AND Cooling

Davis Mechanical Heating AND Cooling

4.3 6 reviews
“Reasonable price and didn't try to sell me something I didn't need.”
Open 24 hours
525 Highland Rd W
i
Golden Gate Spray Foam & Fire Proofing

Golden Gate Spray Foam & Fire Proofing

5.0 2 reviews
“They explained the whole process, finished on time, and the difference in our home's temperature was immediate”
Since 2020
35 Trillium Dr Unit 1
i
Energy Controls

Energy Controls

565 Trillium Dr #10
i
Touchstone Building Technologies Inc.

Touchstone Building Technologies Inc.

Emergency service
190 Washburn Dr Unit 1
i

Why these companies made our list

What customers say about companies in Kitchener

  • “They immediately sent Ronnie to our rescue! I was completely impressed with Ronnie's professionalism and customer service, he did an excellent job of diagnosing and repairing the problem with my air conditioner.” — customer of Aire One Heating & Cooling KW
  • “Professional, super friendly and was able to get my furnace up and running super quickly.” — customer of Air Expert Home Comfort Inc
  • “On the scheduled day for installation, Infiniti installers arrived promptly with all the necessary equipment and tools as expected and installed our new heat pump without issue.” — customer of Infiniti Air Conditioning & Heating

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

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