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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.

We have used Welsch before. This was part of an annual heating and  annual air conditioning  tune up. We have two air conditioners and furnaces so the price, in my mind was reasonable. ($290 combined for the two inspections and tune ups.) They checked and cleaned the system and checked...

John M.

Welsch Heating & Cooling were professional from the first steps to the completion of my project. They replaced two furnaces in my house. The sales rep was trustworthy with the units he recommended. He also pointed out existing ventilation problems that could be a safety concern. The installation crew were...

Marcus P.

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.

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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