Recover and identify
We confirm the refrigerant type and recover refrigerant when required before opening the Thermo King APU recharge process.
TriPac freon recharge and leak diagnosis
Thermo King APU Recharge
A Thermo King APU recharge should restore cooling and reveal why refrigerant was low. We test the circuit, pull vacuum, recharge accurately, and confirm vent performance before the truck leaves the stop.
- Refrigerants
- R-134a, R-404A, custom applications
- Brands
- Thermo King, Carrier, RigMaster, Dynasys
- Service
- Recharge, repair, leak checks, diagnostics
Recharge service
Thermo King APU recharge
Thermo King TriPac cooling faults can come from low charge, blocked coils, weak condenser fans, compressor issues, control faults, or restrictions. We look for the cause instead of selling the same recharge twice.
Leak and vacuum check
Vacuum testing helps remove air and moisture while exposing leaks that would waste the new charge.
Recharge by target
Service can include R-134a and application-specific refrigerants. The tech charges according to the equipment data and verified operating behavior.
Verify cold air
Final checks include vent temperature, compressor cycling, fan operation, pressure behavior, and customer notes.
Better method
Why not just top it off?
A quick top-off may get cold air for a moment, but it can miss the leak, overcharge the system, or leave moisture inside. A professional recharge protects the compressor and gives dispatch better repair data.
- Check for oil and dye clues Oily fittings, service ports, condenser rub points, or repaired hoses can reveal where the charge escaped.
- Watch high-side behavior High pressure can point toward condenser airflow, overcharge, restriction, or fan operation problems.
- Watch low-side behavior Low suction can point toward charge level, restriction, metering, evaporator airflow, or freeze conditions.
- Document next steps If a leak or failed part is found, the driver gets a practical repair path instead of another short-lived recharge.
FAQ
Questions drivers ask before dispatch
Straight answers help avoid the wrong truck, wrong refrigerant, or wrong tool showing up.
Is Thermo King APU recharge mobile?
Yes, where dispatch coverage is available. Share your truck stop, terminal, or yard location when you call.
Can you check for leaks on a TriPac?
Yes. We inspect fittings, hoses, service ports, condenser, and evaporator behavior before and after recharge.
What if my Thermo King APU needs repair after the recharge check?
The tech can document the fault and, when parts and access allow, complete the repair or schedule the next step.