Welcome to Langendorf Supply Company

We are the leader of Commercial HVAC supply in the St Louis Missouri and Greater Illinois Area. We proudly represent the most outstanding products lines in HVAC.
Langendorf Supply has been in the family for 35 years. See About Us for our full history.

We are a fully staffed and stocked Manufacturers Rep

Check out our Stock. We are Here to Help

Estimating

Estimating Mechanical and Architectural Projects

We have a full team of estimators to provide accurate and concise bids to our contractors on or before project Bid Date

Sales

Excellence in Customer Service

Our Team of Sales Member and Support Staff are dedicated to working with Project mangers and field staff to complete projects the right way and on time.

Engineering

On staff engineers

In any job, the design phase is crucial and we are available for design and product implementation support