708-500-5281 
A dependable HVAC system keeps drivers comfortable, alert, and focused in every season. West 66 provides truck HVAC diagnostics and repair for heating and A/C issues that affect comfort, visibility, and day-to-day performance. We identify the problem quickly and repair it correctly to help keep your truck working year-round.
HVAC Systems
Complete Truck HVAC Services
We service all components of your truck’s heating and cooling system.
AC System Services
- AC Recharge
- AC leak detection & repair
- AC compressor replacement
- AC condenser & evaporator replacement
- AC lines & fittings
- Cabin air filter replacement
Heating System Services
- Heater core replacement
- Blower motor repair
- Blend door & actuator issues
- Coolant flow problems
Get Back on the Road Faster
Dependable HVAC repairs and heavy-duty service that help keep you comfortable, focused, and moving.
Signs Your Truck’s HVAC System Needs Service
Your HVAC system may need attention if you notice:
- AC blowing warm air
- AC only working at highway speeds
- Cab temperature changing without warning
- Moisture or fog building up inside the cab
- Heater producing little heat
- Freon leaking under the truck
- Burning, musty, or moldy odors
Catching HVAC problems early can help you avoid larger repairs, added downtime, and costly failures like a damaged compressor.
How the Process Works
From the first system check to the final test, we follow a clear process built to limit downtime and get your truck back in service as quickly as possible.
Process steps
- Initial HVAC inspection and diagnosis
- Clear findings and repair approval
- Professional service and repair
- Final performance and system check
- Ready for pickup and back on the road
Why choose West 66
Certified heavy-duty diesel technicians
Advanced A/C machine for proper system servicing
We find leaks—not just recharge and go
Reliable repairs that hold up in real conditions
Frequently asked questions
A working HVAC system helps with more than comfort. It supports visibility, controls interior moisture, improves defrost performance, and helps drivers stay focused in extreme weather. When the system is not working properly, it can affect both daily comfort and safe operation.
Warm air can be caused by refrigerant loss, leaks, compressor trouble, electrical faults, or pressure-related issues inside the system. The symptom may look simple, but the real cause can vary, which is why proper diagnostics matter before replacing parts.
If the AC cools better at highway speeds than at idle, the system may have airflow issues, weak fan performance, pressure problems, or a component beginning to fail. That usually means the system is losing efficiency and needs inspection.
Weak heat, inconsistent temperature, poor airflow, fogging inside the cab, or unusual smells can all point to heater system issues. If the cab does not heat properly, the problem can affect driver comfort, windshield clarity, and cold-weather performance.
Yes. Minor HVAC problems can get worse over time and place more strain on major components. Addressing weak cooling, poor airflow, or leaks early can help prevent larger failures, longer downtime, and more expensive repairs such as compressor or system replacement.
Testimonials What Our Customers Say
Contact Us
Have a question or need a quick quote? Send your truck or trailer make, model, year, and a description of the issue, and we’ll get back to you as soon as possible.
Contact Information:
Phone:
708-500-5281
Email:
[email protected]
Location:
Address
198 W Laraway Rd, Joliet, IL 60436, United States
Opening Hours:
Mon – Fri:
7:00 AM – 5:00 PM
Saturday:
7:00 AM – 12:00 PM
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