The First Choice of Houston Residents For HVAC Services Finding a trustworthy HVAC company had always been a challenge to Houston natives. But, ever since the commencement of 75 DegreeAC, they can confidently name one reliable and honest Heating, AC, and HVAC contractor in the Houston area. At 75 DegreeAC, we take pride in being a locally-owned and operated HVAC company in Houston. Our mission is to provide next-level AC, Heating, and HVAC services to Houston natives about which they can speak with poise and refer to their friends, family, and neighbors without being even a bit hesitant. HVAC Companies