ABOUT PAUL MASSONE Paul Massone operates out of Concord, CA and holds Warm Air Heating, Ventilating And Air Conditioning licenses according to the California contractors license board. Mechpros Heating and Air Conditioning has over 12 years of industry experience, in residential and commercial systems. We are dedicated to providing our clients with the very best in installation, service and repair. Since we are an A+ Lenox dealer, let our direct pricing save you money when you need to replace