At CSNA we have dedicated ourselves to serving you, our customer. Headquartered in Houston, Texas we provide regional services throughout Texas, Arkansas, Louisiana, New Mexico, Mississippi, and Oklahoma.  Our 24/7 support staff are here to assure you that each job is completed on time and held to our standard of customer service regardless of scope or size. From preventative maintenance to facility emergencies, our team of licensed technicians are self-performing and certified for all your HVAC, Refrigeration, Electrical and Plumbing trades. We are very proud of the fact that our customers have come to rely on us for custom solutions to their complex problems. Our Team. Your Solution.