Casto Technical Services, Inc. (CTS) has been a locally owned and operated HVAC company in Charleston, WV since 1965. Casto has been known as the region's most trusted HVAC provider to hospitals; schools; law offices; government facilities; military institutions; data centers; correctional centers; retail businesses; industrial facilities; large corporate buildings; and more. Our technicians are certified to service all makes and models of equipment. We have customers throughout the entire state of WV and sections of OH, KY, MD, VA, and PA.

Founded in 1965, by Harry Casto, Casto Technical Services, Inc., ("Casto") is a commercial heating and cooling business in Charleston, West Virginia. For more than 50 years, Casto has provided state of the art HVAC services for buildings such as schools, large corporate buildings, and hospitals within the state of West Virginia, Ohio, Kentucky, Maryland, Virginia, and Pennsylvania. Casto has built its reputation of being a family owned business that treats its employees well and provides honest reliable advice, dependable service to its customers while using the industry's best equipment and controls.

Investing in an HVAC preventative maintenance program will help your business maintain occupant comfort, minimize repairs, save energy, and increase the life and efficiency of your equipment. Casto Technical Services understands that each customer is different. Therefore, no preventative maintenance plan is the same. Casto offers scheduled maintenance agreements (annual, bi-annual, quarterly, etc.) as a proactive strategy to eliminate repairs and prolong the life of the equipment. Casto also offers full maintenance agreements that covers repairs (exclusions apply) on the covered pieces of equipment.

Backflow is the undesirable reversal of the flow of water from its intended direction in any pipeline or plumbing system. Backflow is dangerous because it can allow drinking water in plumbing systems to become contaminated and unusable. The West Virginia Bureau of Public Health Title 64 Legislative Rule Series 15 requires all water customers that are open to the public to have an approved backflow device installed and tested on an annual basis. A tester certified by the West Virginia Bureau for Public Health must test backflow devices.

What's new?

Casto’s retrofit and installation team installed two new Lochinvar water heaters with all new piping for a medical facility in Grantsville, WV.

Posted on Mar 08, 2021  •  Facebook

We're looking for an experienced Administrative Assistant!!! Excellent benefits! Our Casto Technical Services Administrative Assistant is the first contact for all of our customers on the telephone and in person, and represents our company in a professional, courteous, and friendly manner. The...

Posted on Mar 04, 2021  •  Facebook

When inspecting equipment, it is critical to be thorough. From most angles, the condition of the heat exchanger on the left looks to be in working condition. However, upon closer inspection (picture on the right), there was a hole found that would have allowed deadly carbon monoxide to be released into the air.

Posted on Mar 02, 2021  •  Facebook

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