Welcome to TMi-ASG

TMi-ASG has proudly served the HVAC industry for 38 years. During this period, we have built ourselves around providing quality products at an affordable price. This has been facilitated by our associations as an Original Equipment Manufacturers Representative and Aftermarket Distributor also through our Spectrum Parts Program.  Our OEM representation includes: Daikin-Applied, Islandaire, LG, Bard, American Air Filter (Filtration & HVAC) and many others.
Our After Market program includes partnerships with several major manufacturers in the HVAC industry. Included in this program are:

  • Compressors – Bristol, Copeland, Panasonic, Tecumseh (Hermetic & Semi-Hermetic), Danfoss, LG Rotary
  • Daikin-Applied Premier Compressors – Remanufacturing compressors originally manufactured by: Carlyle, Copeland, Dunham-Bush, York, Worthington (Semi-Hermetic)
  • Equipment – McQuay, Islandaire, Gree, Amana, Cold Point, Adirondak Air
  • Pumps – Armstrong, Bell & Gossett, Taco
  • VFD – Yaskawa
  • Refrigerants – Daikin, Bluon, Summit all blends and virgin gases available

We have local availability, and fast courteous customer service representatives to assist you in fulfilling your product requests.

If you have an immediate need, please contact us at Chesterfield, MO (636) 777-7189 or at Lenexa (913) 224-1212 . We would welcome the opportunity to work with you.  You may also request information through our Linecards.


TMi-ASG is a regional independent representative sales agency for commercial HVAC equipment, serving the HVAC community since 1975.


The TMi-ASG team is dedicated to serving our HVAC customers with the highest professional relationship.


TMi-ASG is the leading distributor of the most reliable HVAC products and aftermarket products.  Our brands include American Air Filter and many more.

Our Promise

TMi-ASG is committed to sharing this knowledge base with Building owners, Mechanical Contractors, and Consulting Engineers. We offer a variety of programs to fit with our customers needs and are continually looking to our customers experience to gauge our success.