Welcome to Langendorf Supply Company

We are the leader of Commercial HVAC supply in Eastern Missouri, Greater Illinois Area and Indianapolis. We proudly represent the most outstanding products lines in HVAC.
Langendorf Supply has been in the family since 1975. See About Us for our full history.

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Indianapolis Open House!

Indianapolis Open House, 16 Manufacturers, Engineering PDH Session

Will we see you there (Indianapolis Edition)?

You have places to go and people to see. Keep your eyes and ears open for communications from me in 2024. #indianapolis #engineers #hvac...

Seek more in 2024!

We must be having some fun, because time is sure flying by at a record pace for me. How about you? 2024? Wow. What are your goals for...

We are a fully staffed and stocked Manufacturers Rep

Check out our Stock. We are Here to Help

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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.