Marin and Sonoma County Heating and Air Conditioning services offered by Ongaro & Sons are extremely comprehensive heating and cooling services compared to other heating and cooling companies. We offer heating and cooling repair and installation services for anything that has to do with heating systems, ventilation, and air conditioning (HVAC). This includes mini split systems, heat pumps, duct cleaning, heating repair service, cooling system repair, air conditioning service and HVAC system cleaning and tune ups. We are Trane Comfort Specialists and specialize in new high-efficiency reliable HVAC systems and indoor air quality. As HVAC experts and a heating and air conditioning repair company, we work on any make or model of HVAC equipment and our trucks are fully stocked with repair parts for any heating and cooling service for any HVAC system, air conditioning system, and ventilation system. Listed below are our HVAC services.