Home Operating System are Trusted by so many existence homeowners, businesses, and builders across Great Toronto Area to deliver year-round home comfort solutions and peace-of-mind, Home Operating System is one of toronto's reliable providers of Furnaces, Air Conditioners, Water Heaters, Plumbing, Water Softeners, Water Filtration and Protection Plans. We offer some of the best guarantees in the business and home comfort solutions for every home and budget. At Home Operating System, we're not comfortable until you are.