Commercial HVAC Experts
Commercial truck AC systems use larger compressors, higher-capacity condensers, and multi-zone controls that require specialized knowledge. Simply recharging a leaking system wastes money — the leak must be found and repaired for lasting results.
CTR diagnoses the actual cause using professional AC gauges, electronic leak detection, and systematic testing before recommending repair. We service all refrigerant types (R-134a and R-1234yf) and all bunk heater brands (Webasto, Espar).
Located on Armentrout Drive directly off I-85 at Exit 58. All AC repairs backed by our 3-year, 36,000-mile warranty.
Complete AC Service
Compressor, condenser, evaporator, and refrigerant service.
Climate Controls
Blend door, actuator, sensor, and control module repair.
Bunk Heaters
Webasto, Espar fuel-fired heater diagnosis and repair.
3-Year Warranty
Industry-leading warranty on all HVAC repairs.
Complete AC & HVAC Services
Diagnosis to repair. Click any service for details.
Performance testing with professional AC gauges — vent temperatures, system pressures, compressor operation, electronic leak detection, and control system evaluation.
AC Warning Signs
Warm Air from AC Vents
Low refrigerant, compressor failure, or condenser restriction. Most common AC complaint.
No Airflow from Vents
Blower motor failure, resistor failure, or control circuit issue.
AC Cycles On/Off Rapidly
Low charge, pressure switch fault, or electrical problem causing short cycling.
Unusual Noise When AC Engages
Compressor bearing, clutch, or internal damage. May worsen quickly.
Temperature Won't Change
Blend door actuator failure — door stuck in one position regardless of control setting.
Bunk Heater Won't Ignite
Fuel supply, glow plug, or control issue. Safety concern for cold weather sleeper operation.
AC Repair Cost Guide
| Service | Cost Range |
|---|---|
| AC Diagnosis | $150–$300 |
| Refrigerant Recharge | $200–$400 |
| Compressor Replacement | $800–$2,000+ |
| Condenser Replacement | $400–$1,200 |
| Evaporator Replacement | $600–$2,000+ |
| Blower Motor/Resistor | $150–$500 |
| Bunk Heater Repair | $200–$1,500+ |
Written estimates before work begins. 3-year, 36,000-mile warranty.
HVAC System Components
Engine-driven compressor, condenser, evaporator, expansion device. Larger capacity than passenger vehicles.
Second evaporator or standalone electric unit for rest period climate control without idling.
Electronic blend door actuators, sensors, control modules. Multi-zone for cab vs. sleeper.
Webasto/Espar fuel-fired units with own fuel supply, combustion chamber, and controls.
Understanding Truck HVAC
Cab temperatures can exceed 130°F in summer. Heat exhaustion impairs cognitive function, reaction time, and alertness — all critical for safe commercial vehicle operation. Functional AC is a driver safety issue, not just comfort.
Diagnosis Before Recharge
Simply recharging a leaking system wastes money — the refrigerant leaks out again. We identify the leak source, repair it, then recharge for lasting results.
Compressor Failure Cascade
When a compressor fails internally, metal debris circulates through the system. Without proper flush, receiver/drier replacement, and expansion device inspection, debris destroys the new compressor.
NC Humidity Factor
North Carolina's humid climate accelerates evaporator corrosion and promotes bacterial growth on the evaporator (causing musty smells). Annual AC checks catch these issues early.
Driver Safety Requirement
FMCSA requires drivers to be alert and fit for duty. Excessive heat impairs fitness. Many fleets require functional AC as a dispatch condition.
Built for Heavy Duty
CTR's facility on Armentrout Drive has the professional AC equipment, refrigerant recovery systems, and bay space for complete HVAC diagnosis and repair on any commercial truck.
Fleet AC Programs
Pre-summer fleet AC inspections, priority scheduling, fleet pricing, and documentation. Keep your drivers comfortable and your fleet compliant.
(704) 786-0132
AC Repair Near You
CTR Heavy Duty — Concord
Directly off Interstate 85 at Exit 58. Easy truck access.
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