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Heating & Air Conditioning

Heating & Air Conditioning

We strive to be the best heating and air conditioning company in the St. Louis/St. Charles area with over 120 years of experience.

Residential HVAC Equipment

Residential Equipment

We furnish and install a complete line of heating, air conditioning, air cleaning and humidifying equipment

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rooftop-unit

Commercial Equipment

The Welsch Heating and Cooling Company offers an enormous array of commercial equipment and services to fit the needs of businesses both large and small.

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air-conditioning

Air Conditioning & Cooling

Efficiency-Your air conditioner can be the most expensive appliance to operate in your home.

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furnance

Furnaces & Heating

Whether you have gas heat, electric heat, boiler or have a heat pump, we have a solution for you.

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air-cleaner

Air Cleaners

Installing a humidifier to your heating system will provide moisture to your home all winter long.

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Humidifiers

Humidifiers

Controlling humidity can not only affect how comfortable you feel, it can actually save you money on your monthly energy bills.

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Thermostats

Thermostats

Thermostats help your heating and cooling equipment maintain the optimal temperature setting with the utmost energy efficiency.

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Reviews

I would like to compliment you on the quality of work and courtesy of the technicians who did the installation.  These employees are certainly an asset to your firm.

Dan J.

Thanks for your help today!  Our AC is back in working order.

Lisa D.

I have used them since 1997 and have never been disappointed! Once we had a horrible sickening smell in our house. The gas company couldn’t and told us to call the fire department who said maybe it was The furnace. It was 2 degrees F outside and we had to...

VC

We’ve been customers of Welsch Heating and Cooling for the past 40 years. There has never been one time when their service has not been exemplary!

Debbi H.

I felt the need to write and praise your company! I have used Welsch for almost 15 years for heating and a/c maintenance and service. I had a slight emergency today, called this morning and you had someone come this afternoon. Chris Sasse was the technician and could not have...

Paula J.

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

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