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Mason Air is your one-stop service provider for any HVAC installation needs you may have in Greencastle, PA and the surrounding areas. We are capable of handling both residential and light commercial jobs, so whether you need to simply install a new thermostat or totally overhaul your heating and air conditioning system, we've got the tools and experience required to handle the job.

We back all of our installation work with a full 2-year workmanship warranty. Just think of that as our quality service guarantee!


Our Installation Services Include:

  • Duct work
  • Equipment replacement
  • New thermostat installations
  • Copper line sets
  • Heat pump and furnace installations
  • Air conditioner installations
  • New construction work
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When it comes to HVAC maintenance, experience counts. Mason Air is a fully featured maintenance service for virtually any HVAC system you may be having trouble with. We are certified technicians for Trane and Goodman air conditioning and heating products, but our experienced employees can service all major brands. We are prepared to diagnose and resolve whatever ails your system; provide replacement parts and cleaning to help your home or business climate back to where you like it.


Our Maintenance Services Include:

  • Air conditioning maintenance
  • Heat pump maintenance
  • System cleaning
  • Compressor replacements