Heating, Air Conditioning & Refrigeration Supplies Since 1935
Residential, Commercial or Industrial
Thompson Supply provides equipment, parts and supplies for your heating, ventilation, air-conditioning and refrigeration needs whether residential, commercial or industrial.
Wide Inventory in Stock
Serving the greater St. Louis area since 1935, Thompson Supply, as a third generation family-owned and operated business, continues to provide our customer with solutions that are timely and economical. We maintain a wide inventory in stock with the flexibility to rapidly source other products as needed.
Original and Aftermarket Parts
Extensive knowledge of our industry allows us to offer both original equipment manufacturers and aftermarket parts along with a broad variety of maintenance and repair supplies.
Hard to Find is Our Specialty
“Hard to find is our specialty” is more than a slogan; it’s a way of life. Not limited by a catalog or a corporate office, we live it every day to source service parts for our customers to meet their needs and support their business.
We can help with:
| A/C Whips | Air Purifying | Chimney Liner Kits | Condenser Pads | Duct Booster |
| AC | Aluminized Tape | Circuit Boards | Controls | Duct Tape |
| Accumulators | Bearings | Circuit Breakers | Copper Fittings & Tubing | Electrical |
| Acetylene | Belts | Cleaning Chemicals | Cutting Tools | Electronic Air Cleaner |
| Adhesive | Black Iron Fittings & Pipe | CO2 | Defrost Time Clocks | Expansion Valves |
| Aftermarket | Blower Motors | Combustion Analyzers | Digital Multimeter | Factory Parts |
| Air Bear Filters | Blower Wheels | Compression Fittings | Direct Drive Motors | Fan & Limit Controls |
| Air Conditioner Parts | Boiler Controls | Compressors | Direct Spark | Fan Blades |
| Air Conditioners | Brazing Alloy | Condensate Pumps | Driers | Flare Fittings |
| Air Handlers | Charging Scales | Condenser Fan Motors | Duct & Fittings | Flashlights |
| . | . | . | . | |
| Flex Duct | Fuses | Hydronic Heating Valves | One Shot | PVC Fittings & Pipe |
| Flue Brushes | Gas Valves | IAQ | Oxygen | R22 |
| Flush Kits | Gauges | Leak Detector Bubbles | Phase Monitors | R404A |
| Flux | Glycol | Leak Detectors | Piercing Valves | R410A |
| Foaminator | Hard Start Kits | Mineral Oil | Pilot Assemblies | R422A |
| Freon | Hot Shot | Motors | Pipe Insulation | R422B |
| Furnace Motherboard | Hot Surface Igniters | MRO | Pleated Filters | Recovery Machine |
| Furnace Parts | Hot Water Vents | Nitrogen | POE Oil | Recovery Tank |
| Furnace Pipe | Humidifier Pads | OEM Parts | Pressure Controls | Refrigerant Parts |
| Furnaces | Humidity Testers | Oils | Property MGT Supplies | Refrigerants |
| . | . | . | . | |
| Refrigeration | Shafts | Solenoid Valves | Thermostats | Ventilation Eliminators |
| Refrigeration Oil | Sheet Metal | Steam Vents | Transformers | Water Panels |
| Registers | Sheet Metal Screws | Suva | TXV Valves | Whips |
| Regulators | Sheet Metal Tools | Temperature Controls | Vacuum Pump Oil | Wire Nuts |
| Return Air Grills | Sight Glasses | Terminal Wires | Vacuum Pumps | Wire Ties |
| Sequencers | Solder | Thermocouples | Ventilation | And More … |
Service Area
