• Casto TechWe Make Buildings Work... Better.
  • Commercial HVACService, Sales & Maintenance...
  • Complex Projects?We can manage them from start to finish. Ask Ruby Memorial Hospital.
  • Nathan CastoFor nearly half a century the Casto name has lead the way in innovative HVAC Solutions
  • Using State of the Art TechnologyWe can assist you in every aspect of climate controls and building automation.
  • Casto Technical Services
  • Casto TechWe Make Buildings Work... Better.
  • Casto TechWe Make Buildings Work... Better.
  • Casto TechWe Make Buildings Work... Better.
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Casto Technical Services knows that a building's systems are vital to the comfort, productivity and performance of its inhabitants. Since 1965 Casto Technical Services has been setting the standard for providing commercial customers with quality service and installation.

Whether you need a new or upgraded HVAC system, regular or routine maintenance or emergency repairs, Casto Technical Services will provide you with the best service in the region.

We make buildings work...Better!

Casto Technical Services - Charleston, WV
Commercial HVAC

About Casto Tech

Building Automation


If you are looking for a system for new construction or it is time to upgrade your building's HVAC, our experienced sales team is here to help.
As the region's longest standing HVAC Contractor, we deliver the best equipment available. Our team has in-depth knowledge ...
Whether your building needs precise temperature control or your goal is energy efficiency and conservation, Casto Technical Services can provide you with....
People make the difference in a job well done. At Casto Technical Services, our people are the reason we continue to grow and keep...
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We Make Buildings Work... Better!   800-232-2221