Business Directory Logo 1st Air Inc. Heating and Air Conditioning provides products, services and installations in all areas of Heating and Cooling including commercial and residential Furnace, Air Conditioning, Air Quality and other HVAC solutions in Greater Toronto area: Durham - City of Oshawa, City of Pickering, Municipality of Clarington, Town of Ajax, Town of Whitby, Township of Brock, Township of Scugog, Township of Uxbridge Halton - City of Burlington, Town of Halton Hills, Town of Milton, Town of Oakville Peel Visit site »