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16-1211 Gorham St, Newmarket, ON L3Y 8Y3
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Methods of Payment:

  • Visa
  • Mastercard
  • Cash
  • Interac
  • Cheque
Gillis S.R. & Sons Ltd. Heating and Air Conditioning is a family owned and operated heating and air conditioning business that started in 1981. We became a Carrier dealer in 1983 and celebrated our 25th anniversary with Carrier in 2008. We install gas and electric furnaces, air conditioners, heat pumps, ductless splits, gas fireplaces, humidifiers, air cleaners, air purifiers, whole house standby generators, ductwork and gas lines for stoves and barbecues and we fix any type of furnace! We are fully insured and Workplace Safety and Insurance Board compliant. If you are looking to replace your existing equipment, need service or just want advice, please give Gillis S.R. & Sons Ltd. Heating and Air Conditioning a call or stop by our office on Gorham Street in Newmarket. Our friendly office staff would gladly answer any of your questions. more...

Opening Hours


Products and Services

  • Heating & Air Conditioning,

Brands Carried

  • Mitsubishi Electric,
  • Carrier,

Languages Spoken

  • English,

Ratings & Reviews - S.R. Gillis & Sons Ltd

How would you rate this business?
    Donna H

    We have lived in Newmarket for over 25 years (in the same house as well) S R. Gillis has installed and serviced our air conditioning and furnace when we need anything to be done. Our furnace was over 30 years old and finally had to be replaced. Stan and his employees were so helpful during this time. The temperature was -17c and Stan was quick to drop off some extra heaters to help us through the cold couple of days while they were working to get everything up and running even with the limited working space in our 1886 cellar! I will definitely be spreading the word about how efficient this company is for any of there services! Thank you Stan and your team! Donna H.

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