Niagara Region's Heating & Cooling Specialists
ThreeBest Rated Excellence & Trusted Pros Award Winner

CALL NOW FOR AN ESTIMATE: (289) 820-5665

FREE ESTIMATES FOR NEW EQUIPMENT!

YOUR SATISFACTION IS 100% GUARANTEED – 24/7 EMERGENCY SUPPORT

Serving all of the Niagara Region:
Welland, Niagara Falls, Port Colborne, St. Catharines, Fort Erie, Thorold, Lincoln, Pelham and more!

Furnace Repair & Installation

Repairs to all makes and models and replacement installations with American Standard.

Air Conditioning Repair & Installation

Repairs to all makes and models and replacement installations. We carry American Standard products.

Boiler Repair & Installation

Repairs to all makes and models and replacement installations. We carry Viessmann and IBC.

Water Heater Repair & Installation

Repairs to all makes and models and replacement installations for homes and pools.

Air Purification Systems

Repairs to all makes and models and replacement installations for your air purification system.

24/7 Emergency Support

Outside of normal business hours we offer emergency support to get your unit repaired quickly.

See 5-star Reviews From Customers Like You

My experience with Williams Kool Heat is what everyone should get. They came in assessed my air conditioning problem and fixed what was wrong no upselling. Would recommend them to anyone, plain and simple honest people.

David

Excellent service and very thorough. I was very thankful Dave was able to fix my AC on a Friday night of Canada Day weekend. I highly recommend and will call again for any future issues.

Ty

Fast efficient service. Very knowledgeable and honest as well as reasonable. Thank you for fixing my AC in 30 minutes especially when it’s 90 out there. THANK YOU FOR COMING WITHIN 20 minutes of my call. Best business I’ve dealt with. Very friendly and you didn’t try to steer me the wrong way with price THANK YOU THANK YOU AGAIN Dave Williams.

Diane

Professional. Honest. Responsive. Helpful. Great service. Absolutely the best! I found my new furnace and air repair/service company!

Nicky

I wanted to pass along a thank you note for the fine job you did this past week. You were very professional and patient with me and took the time to explain to me the problem. The work site was very clean after the work was done. I’m very satisfied and would highly recommend this outstanding company to friends and family.

Natalie

Very happy with my experience with Williams Kool Heat. Dave and his team are very knowledgeable and friendly. They were also very efficient and true to their word. I would highly recommend Williams Kool Heat to anyone.

Adam

Very satisfied with my service. My call was returned right away, and I had the option of him coming to fix it in the dark. I opted for early morning, and he fixed it quickly as well as telling me valuable info about my unit. Professional, efficient and friendly.

Miles

Amazing service. They came out within a few hours of me calling which is just outstanding. The technician that helped me out was excellent, figured out the issue and resolved it in no time. Very educational and showed me how the furnace works, what to look for, and how to avoid a repeat of the issues. Highly recommend! Could not be happier with the service.

Fil

Excellent service! Thanks Dave for your prompt and courteous service. The AC was up and running in less than 20 minutes. We would highly recommend Williams Kool Heat for anyone looking for quality service at a fair price.

Joan

Excellent company. Dave is a fantastic guy to deal with and super friendly. And they’re response time for me has always been great. I won’t be going to anyone else that’s for sure!

Kyle

Contact Niagara’s 5-Star Rated Heating & Cooling Company

Serving all of the Niagara Region:
Welland, Niagara Falls, Port Colborne, St. Catharines, Fort Erie, Thorold, Lincoln, Pelham and more!

CALL NOW: (866) 351-6948
Awards & Associations

30+ Years Experience

Williams Kool Heat Inc has over 30 years of experience and has serviced thousands of customers in Niagara.

Family Owned & Operated

As a family owned and operated HVAC company, Williams Kool Inc Heat provides a 100% satisfaction guarantee!

Award Winning Company

Chosen for the ThreeBest Excellence and Trusted Pros Top Rated Awards in Welland!

5-Star Rated HVAC Company – Over 30 Years Experience

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5-Star Customer Reviews
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Satisfied Customers

We understand that malfunctions in your heating and cooling systems can arise unexpectedly and leave you freezing or sweating. Whether you are in need of an emergency service or system maintenance, call Williams Kool Heat Inc for assistance with installation or preventative maintenance cleaning. Our experienced HVAC technicians can provide fast and friendly service, as well as, sales and installation of various types of HVAC equipment to meet your needs and budget.

Available 24/7 for Emergency Repairs

TSSA, HRAI, Welland Chamber of Commerce

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