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 Equipment
We furnish and install a complete line of heating, air conditioning, air cleaning and humidifying equipment
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 & Cooling
Efficiency-Your air conditioner can be the most expensive appliance to operate in your home.
Furnaces & Heating
Whether you have gas heat, electric heat, boiler or have a heat pump, we have a solution for you.
Air Cleaners
Installing a humidifier to your heating system will provide moisture to your home all winter long.
Humidifiers
Controlling humidity can not only affect how comfortable you feel, it can actually save you money on your monthly energy bills.
Thermostats
Thermostats help your heating and cooling equipment maintain the optimal temperature setting with the utmost energy efficiency.
