Zip-A-Duct installs in a fraction of the time as compared to sheet metal duct work. Save time and money on your next exposed duct job.
Commercial Package Units
2-25 Ton Commercial Units By Allied Air
A Division of Lennox International
New! Make Direct Requests with Your Phone
Save time with Capitol's Text-2-Counter
Quality Service, Quality Products
Serving HVAC contractors for more than 85 years
Sheet Metal Pipe, Duct, and Fittings
Largest selection of in-stock sheet metal fittings in the State
Custom Sheet Metal Fabrication
Let Capitol be the one-stop shop for your next job
The Right Equipment to Do the Job
Where you need it-when you need it, from Capitol


Who We Are

Capitol Supplies is a full service HVAC distributor serving Central Indiana.  We were founded in 1928 and are still owned and managed by the same family.  Our focus is local and our mission is to be your Preferred Supplier of HVAC supplies and equipment.

We Offer

  • Free Daily Delivery to the Trade
  • Large In-stock Inventory
  • In-house Custom Metal Fab Shop
  • Technical Support
  • “Best in Town” Customer Service
  • After-Hours Emergency Parts Service
  • Friendly, Fast & Helpful Service 

Markets We Serve

  • Residential Replacement
  • New Construction
  • Service and Maintenance
  • Sheet Metal Fab Shops
  • MultiFamily