EMERGENCIES: 800-600-9292




Business Moves Fast. Good Thing We Do, Too.

We were very fortunate to have had the opportunity to donate labor and material to the Farmington Children’s Home, The Lothrop Cottage. The Farmington Children’s Home does wonderful work and has offered a variety of services to the children of the community for over 100 years. They have touched so many lives throughout the years. Because of that, we wanted to make sure their indoor air comfort is satisfactory for them.

Commercial Services

Time is money. A down system or delayed install can result in big losses. We get that.


That’s why businesses from all around depend on our responsive expertise for their commercial and light industrial heating and cooling.


We service, install, and repair commercial HVAC and furnace equipment of all types and brands for the smallest businesses to the largest enterprises in the Festus and Crystal City area.


Rooftop HVAC & Furnace Units
Split Systems
VAV Systems
VRF/VRV Systems
Exhaust and Supply Fans
Make-up Air Units
Server Rooms
Kitchen Hoods & Exhaust
Kitchen Gas Piping

And, when it comes to new commercial and retail construction, we live on the fast track. Plan and spec HVAC and furnaces. Design build. Complete custom sheet metal duct systems. Energy efficient design. We deliver quality workmanship you can count on.


Ask about our commercial maintenance plans that save businesses money, time, and worry over unexpected breakdowns.


From St. Louis City and County to St. Charles, St. Francois to Ste. Genevieve, Jefferson County,  to Crystal City, Festus and beyond, we can help. Just call us. We can come to you.

Our Projects

Frequently Asked Questions

Normal office hours are from 7:30am to 5:00pm, Monday through Friday at the Crystal City location, and 7:00am to 3:00pm, Monday through Friday in Farmington.

For emergency, after-hours service, please call 800-600-9292.

Although our trucks are everywhere, we have offices in Crystal City and Farmington.

All our technicians are certified by the North American Technician Excellence (NATE) organization to ensure superior, real world, working knowledge of HVAC systems and designated areas of expertise.

Your comfort is important to us in every way. That’s why we conduct background checks on all of our technicians so you can be comfortable they’re as pleasant to have in your home as they are skilled.

Crystal Heating & Cooling is a member of ACCA, the Indoor Environment & Energy Efficiency Association, dedicated to promoting professional standards in contracting, energy efficiency, and healthy, indoor environments.