Green Mills (GM) HVAC Services Inc. opened its doors for business in 2005, with a mission of providing absolute 100 percent customer satisfaction for your home and business. 

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We pride ourselves for the most qualified technicians and installers to meet and exceed all of your heating and cooling needs on residential, commercial and construction basis. 

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We believe that to be truly successful in business, we must always be honest and loyal with our agents, employees and clients. Being honest and loyal will make the best relationships because it leads to trust and faith. That is what differentiates us from most other companies in the HVAC industry in the Greater Toronto Area.