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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. From gas and electric furnaces, air conditioners, and heat pumps to ductless splits, gas fireplaces, humidifiers and more, our range of products and quality installation services are unrivalled in the area. We offer after-hour emergency service and NO charge for a quote on new equipment installed!

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.


Now is a great time to think about replacing your inefficient heating or cooling equipment. Replace your existing equipment with an Energy Star qualified unit and, depending on which unit you choose and its efficiency rating, you can get a number of different rebates.

Call our office today to find out how much of a rebate you can get!

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