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Mobile Diesel USA
Services
Phoenix dispatch, 7 AM to 7 PM Arizona time

A/C and cooling systems

Air conditioning and cooling system repair for diesel trucks — dispatched to your location. Stay comfortable and stay running.

Get help nowCall (602) 456-9071

How it works

Describe the problemTell us what's happening — overheating, no A/C, coolant leak, or temperature warning. Include your truck make and model.
Mechanic dispatchedWe send a cooling/A/C specialist with recovery equipment, refrigerant, and common cooling system parts.
Diagnose and quoteYour mechanic pressure tests the system, identifies the failure, and quotes the repair before starting work.
Cool and runningSystem is repaired, filled, and temperature-tested to verify proper operation before you roll out.

Overheating shuts down engines. We prevent that.

A failing cooling system doesn't just make you uncomfortable — it can kill an engine. From radiator leaks to A/C compressor failures, our mobile mechanics diagnose and repair cooling and climate systems on-site, preventing costly overheats and keeping drivers comfortable.

  • A/C diagnostics and recharge

    Refrigerant recovery, leak testing, compressor diagnostics, and full A/C system recharge to restore cold air to the cab.

  • Compressor and clutch service

    A/C compressor replacement, clutch repair, and drive belt service for all major cab climate systems.

  • Radiator service

    Radiator leak repair, hose replacement, fan clutch service, and coolant flush to prevent engine overheating.

  • Water pump replacement

    Water pump diagnosis and replacement including thermostat, gaskets, and coolant refill for proper engine cooling.

  • Charge air cooler (CAC)

    Intercooler/charge air cooler leak testing, boot replacement, and piping repair to maintain turbo boost and engine performance.

  • Heater and defroster

    Heater core service, blend door repair, defroster troubleshooting, and bunk heater service for cold-weather comfort.

Questions

No estimates. The mechanic diagnoses, quotes, and you approve before any work.

Yes, with portable recovery and recharge equipment. The mechanic can evacuate, leak test and recharge the cab A/C at your location.

Yes — continued driving while overheating can cause catastrophic engine damage. Pull over safely, shut down the engine, and request service. If anyone is in danger, call 911.

Yes. We service both the main cab A/C system (belt-driven compressor) and auxiliary sleeper/bunk A/C units including electric APU-style systems.

In most cases, yes. Radiator replacement can be completed in the field for most truck platforms. For trucks with extremely tight engine compartments, some disassembly may add time but is typically still doable on-site.

In the app or on your secure status page, by card, after you approve the price. Nobody should ask you for cash at the truck.

The Phoenix, Arizona metro, 7 AM to 7 PM Arizona time, every day. Chicago and Detroit are launching next and are not available yet. If anyone is in danger, call 911.

Need this fixed in Phoenix?

Tell dispatch where the truck is and what it's doing. If anyone is in danger, call 911.

Get help nowCall (602) 456-9071