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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

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.

air-conditioning

Air Conditioning & Cooling

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

furnance

Furnaces & Heating

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

air-cleaner

Air Cleaners

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

Humidifiers

Humidifiers

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

Thermostats

Thermostats

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

Reviews

We built our home 12 years ago so we have had a lot of experience with Welsch.  That experience has been especially good, but it became especially so yesterday.  Our upstairs thermostat required new batteries so I put in three new batteries.  I could not for the life of me...

Bob P.

Very fast installation Our gas furnace replacement was completed in less than 2 hours! Everything was cleaned up and working in about half the time I expected.

Very fast installation

Service of the highest quality and friendly service personal

James W.

Thanks so much for taking care of our urgent heating needs.

Meryl S.

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.

More Reviews

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

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