Since then, Free Air Mechanical has been providing high quality, innovative, and leading comprehensive HVAC services in Escondido and surrounding areas including Poway, Rancho Bernardo, Rancho Penasquitos, Mira Mesa, Chula Vista, El Cajon and Lakeside for both residential and commercial areas. 2001. Our experienced specialists are extremely competent, reliable, and punctual. We have decades of experience servicing all types of equipment and ensuring that they function properly for as long as possible. We have successfully served hundreds of HVAC customers in Escondido and the surrounding areas.