Quality Mechanical Services

Connelly Mechanical Inc. was formed in 1997 to provide a single source for builders and homeowners needing mechanical construction of all types, whether it be industrial mechanical services, commercial  mechanical services or residential mechanical services. Over the years CMI has become one of the largest heating, air conditioning, sheet metal fabrication and service contractors in the Springfield area.

24/7 Mechanical Service

Our factory trained service technicians 
are on call
24 hours a day
7 days a week.

Authorized Dealer for HVAC

We are an authorized dealer for the best names in the HVAC business, to include: TRANE, Carrier and York equipment lines. By offering a wide variety of HVAC equipment, we have the flexibility to provide our customers with the right product to maximize efficiency, comfort and compatibility.