David has been in the HVAC industry for more than 40 years, first starting in the US Air Force as an air conditioning and refrigeration specialist. Since then, he has held multiple positions for different HVAC companies across the US, including working as a service manager for Trane Heating and Air Conditioning for 11 years. In 2006, he started his own company, Aircon, Inc. He is experienced with service and sales engineering, has a vast knowledge of any HVAC system, and is certified in handling propane, natural gas, and EPA Refrigeration. Most recently, David taught HVAC/R courses at the Northeast Technical Institute.