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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We are a fully staffed and stocked Manufacturers Rep

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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.

Engineering

On staff engineers

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

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Hours of Operation

Warehouse hours are 7 am - 3:30 pm

Office Hours
Mon: 8am - 5pm
Tue: 8am - 5pm
Wed: 8am - 5pm
Thu: 8am - 5pm
Fri: 8am - 5pm

TQS Iso
TDC Bottom
TMS Bottom Iso
TMR 36 Bottom
TDC Bottom ISO
PAS Bottom ISO
TBD-80 Bottom iso
PAR Iso Bottom
Omni iso
300RS Iso 3
50F iso
50FF Iso Open
350RL
ace
gemini 100