Address: 3000 Old Houston Road, Huntsville, Texas 77340 | Phone: 936.291.7836ALL-TEMP Heating & Air Conditioning serves Huntsville, Texas and the Walker County area. We are licensed, insured, and bonded. We have been in business now for over 30 years. Folks in the Huntsville, Texas and Walker County area have long trusted us with their Air Conditioning and Heating needs, both residential and commercial. How may we serve you today?