Book a Free, In-Home Consultation

Book a Free, In-Home
Consultation and Quote

For Service please call 905-898-6707






We provide the best Heating and Air Conditioning Services
in Newmarket & Surrounding Area since 1981

GET A FREE IN-HOME QUOTE

S. R. Gillis & Sons Ltd. Heating and Air Conditioning

Serving Newmarket and the surrounding areas, S. R. Gillis & Sons Ltd. is a locally owned and operated heating and air conditioning business. We offer after-hour emergency service and free quotes on new equipment.  





A Reputation We’re Proud Of

At S. R. Gillis & Sons Ltd. Heating and Air Conditioning, we are proud of the reputation we’ve built in the community. From the office staff to our licensed technicians, we provide excellence in service and installations. If you are looking to replace your existing equipment, need service on any make and model or just want advice, please give us a call or stop by our office; our friendly office staff would gladly answer any of your questions.