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Heating & Air Conditioning

Residential Equipment

We furnish and install a complete line of heating, air conditioning, air cleaning and humidifying equipment from the following manufacturers:

Manufacturers

Each Manufacturer provides us with all available efficiencies of both furnaces and air conditioning units. For detailed information please contact us at 314-872-8070 and speak with one of our Sales Engineers.

For more information about all of our products, including air conditioning, furnaces, humidifiers, thermostats, and air filtration systems, please see our FAQ page.

Reviews

Enclosed is payment for my new A/C and furnace. Your workmen were exceptional. Ilene O.

Ilene O.

We got four estimates and two of them were pretty high and two were very close, Welsch being one of those. But at the end of the day I was very happy with Welsch and the amount of time they took to figure out the right size AC and Furnace...

Dan P.

They did a great job on installation of new duct work & installing furnace with new outdoor unit.

RHK

Purchased a new air conditioner and furnace and was impressed from the initial sales contact, to verifying what we needed, installation and clean up. Everyone we dealt with did a great job and we love our new system.

Kara L.

I have always received good service from Welsch. Today Brian C. came for my annual furnace service. He was very professional, yet friendly. He happened to arrive at a moment of crisis, as the float broke off of my sump pump just a few minutes before. He was extra patient,...

Helen P.

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Service & Emergencies: (314) 567-6347 Call Today!

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