Drivers spend long hours in the cab, and Missouri weather can swing from humid summer heat to icy winter mornings. A failing A/C system wears drivers down in July, and a weak heater or defroster becomes a safety issue in January. Wetcreek Repair Solutions repairs heating and air conditioning systems on semis and commercial trucks throughout Joplin, MO, keeping cabs comfortable and windshields clear.
HVAC problems can start in the refrigerant system, the cooling system that feeds the heater, or the electrical controls that tie it all together. We test system pressures, check for refrigerant leaks, and inspect the condenser, compressor, and evaporator on the cooling side. On the heating side, we look at coolant flow, the heater core, water valves, and blend doors. Repairs are followed by performance testing to confirm proper cooling, heating, and airflow at every setting.
A/C Performance Testing
Refrigerant Leak Detection
A/C Compressor and Clutch Replacement
Condenser and Evaporator Replacement
Expansion Valve and Drier Service
Heater Core and Water Valve Repair
Blend Door Actuator Repair
Defrost and Cabin Filter Service


A comfortable driver is a more alert and productive driver, and good HVAC also helps with driver retention for fleets. Our truck service in Joplin, MO includes HVAC checks before summer and winter, so problems are fixed before the weather turns. You get a truck mechanic in Joplin, MO who finds the leak or failed part instead of simply topping off refrigerant. Some HVAC repairs, like blower motors, cabin filters, and condenser cleaning, can be handled through our mobile truck repair service.
Why is my truck's A/C blowing warm air?
Common causes include low refrigerant from a leak, a failed compressor clutch, a condenser clogged with debris, an engine fan that isn't engaging, or an electrical problem in the controls. Testing pressures and components finds the cause.
Why isn't my truck's heater getting hot?
Weak heat usually points to low coolant, a thermostat stuck open, a faulty heater water valve, a clogged heater core, or a blend door that isn't moving correctly.
Why does my A/C keep cycling on and off?
Rapid cycling often happens when the refrigerant charge is low or a pressure switch is faulty. The system shuts the compressor off to protect itself, then restarts, creating an on-and-off pattern.
Can I just recharge my truck's A/C?
Adding refrigerant may restore cooling temporarily, but if the system is low, there's a leak that will keep losing refrigerant. Finding and repairing the leak is the lasting fix, and refrigerant should be handled with proper equipment.
Why are my windows fogging up or my defroster weak?
A dirty cabin filter, recirculation stuck on, a heater problem, or a leaking heater core can all cause fogging. A sweet smell or greasy film on the inside of the windshield often points to a heater core leak.
Request Service for trusted diesel repair, roadside help, maintenance, and diagnostics for trucks, semis, and commercial diesel vehicles.
Whether you need roadside truck repair on the highway or a trusted truck repair shop for your fleet, Wetcreek Repair Solutions is ready. Call +1 417-605-7420 for 24/7 truck road service in Joplin, MO.
