24/7 HVAC Installation, Repair & Maintenance Services in the GTA. GTA Heating & A/C Inc. is locally-owned family business offering full- service, factory-authorized HVAC services. We perform sales, repair, and installations for all heating type such as Furnace, Radiant Floor, Hydronic heating, Ductless System, Duct work, Fireplace, Indoor Air Quality, High Velocity System, Unit heaters, Rooftop, Water Heater, and Air Conditioners. Serving at GTA: Toronto, Vaughan, Woodbridge, Richmond Hill, Markham, Thornhill, Brampton, Scarborough, North York and Oakville, Milton, Malton, Mississauga, Etobicoke. GTA Heating & A/C Inc. is committed to providing high quality services whenever you need. We install and repair all HVAC Systems and Brands. All installers and Service Technicians are highly-trained professionals experienced in keeping your system running smoothly. We highly recommend you to talk about Maintenance plan to our representative to make it easy for you and you will never have worry about your HVAC systems.