A/C Service, Repair and Installation in Niagara
Get a Quote, or call (866) 351-6948 book an appointment. 24/7 Emergency Support Available!
Central Air & Air Conditioning Repairs To All Makes and Models
Williams Kool Heat Inc provides reliable central air and air conditioner repairs, designed to last and provide quality operation. Our licensed technicians have years of experience with working on AC units, so you get quality service with quality results. We only use genuine manufacturer parts to guarantee proper operation and long-term reliability.
Whenever you have a problem with your AC unit, we will take care of you as quickly and efficiently as possible. Get affordable prices and genuine manufacturer parts to ensure your AC keeps on working at optimal condition, while also getting licensed, experienced technicians that deliver fast, reliable results no matter what problems you have.
Central Air & Air Conditioning Replacement Installations
We provide high quality central air and air conditioning replacement installations. All of our technicians have worked with hundreds of central air and air conditioning units for many years and have the knowledge and skills to install your new system quickly and properly.

Lease-To-Own and Rental Options Available for Most Products We Install!
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.
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.
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.
Professional. Honest. Responsive. Helpful. Great service. Absolutely the best! I found my new furnace and air repair/service company!
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.
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.
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.
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.
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!
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.