Established in 1976, Hess Air is a full-service HVAC company comprising 42 employees, a 2,500 square foot main office in Alamo, Texas, a satellite office, and two warehouses -all which provide residential and commercial services, air conditioning/heating contractor. Service, service contracts, new systems designed/installed, duct cleaning, air filtering for all types of residential or commercial. We also provide an array of products throughout Hidalgo and Cameron counties as well as Monterrey, Mexico.