Marin and Sonoma County Heating and Air Conditioning services offered by Ongaro & Sons are extremely comprehensive. We offer repair and installation services for anything that has to do with heating, ventilation, and air conditioning (HVAC). We are Trane Comfort Specialists and specialize in new high-efficiency HVAC systems and indoor air quality. We work on any make or model of HVAC equipment and our trucks are fully stocked with repair parts. Listed below are our HVAC services.
What NATE certified HVAC technicians means to you
Learn moreForced Air Furnace and A/C repair and replacement
Learn moreDuct Cleaning, Testing, Repair and Replacement
Learn moreZoning
Learn moreIndoor Air Quality
Learn moreNeed Commercial Service? Learn More
Our Customers
I had a very inefficient furnace that kept going out intermittently-naturally when it was the coldest this winter. When I called Ongaro and Mike arrived, most times it ‘magically’ worked. Through this he was very understanding and patient. He could test the system trying to duplicate the fault. He explained what he was looking for and why he was doing certain tests. Eventually I ended up replacing the furnace with a quieter, more efficient furnace and thermostat. I love both! Thank you Mike for all your help and patience and to Dean for assisting at the end and walking me thru the thermostat set up. I love being able to adjust it remotely via my phone. My family used Ongaro for many years and I hope to continue the tradition!