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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 again compliment one of your fine employees.  He comes two times a year and is always on time, I told him if he is early come anyway, so now he is a little early, great.  He is very efficient and I think does a good job,...

Dan V.

Just want you to know how very happy we are with the excellent job Mike did on all of our copper gutters/flashing and dormers.

John and Mary P.

Just sending a note of thanks for a job well done with the furnace and air conditioner replacement at my home.  I appreciate your efforts on the sales side of this project.  I also want to thank the men for the professional installation.  They were prompt, friendly, informed and answered all of...

Tom P.

I cannot remember the cost, but we got a new furnace and AC unit. They also installed a new thermostat that does wifi. I was pleased with their prompt, neat service.

Barbara U.

We have used Welsch for over 30 years and have never had any problems. I recommend them highly. Very fair, prompt, friendly people and competitively priced.

Bob H.

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

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