1919 W 1st St Suite B, Sanford, FL 32771 | Mon- Fri 8 AM–4:30 PM
Your HVAC system isn’t just about comfort — it’s vital for driver alertness, cargo protection, and regulatory compliance in temperature-sensitive hauls. At On Time Truck Repair, we provide professional HVAC system repair services for diesel trucks and commercial vehicles. Whether your diesel truck is blowing warm air, producing odd smells, or failing to defrost, our certified technicians will diagnose and fix it fast.
We service all major diesel truck brands including Freightliner, Kenworth, Peterbilt, Mack, and Volvo. From air conditioning compressors to heater cores and blower motors, we keep your cab climate under control — in-shop or via our mobile truck repair service throughout Central Florida.

With over 60 years of combined experience, we’re experts at resolving both basic and complex HVAC issues. Our team is equipped with advanced diagnostic tools to identify leaks, electrical faults, and mechanical failures quickly. We use OEM-grade parts and EPA-compliant refrigerants to ensure performance and durability in all conditions.
1. What are signs my HVAC system needs repair?
Weak airflow, warm A/C, no heat, unpleasant odors, or persistent defrosting issues are signs of HVAC failure.
2. Do you service HVAC systems on all diesel truck brands?
Yes. We repair HVAC systems in all diesel truck makes and models, including newer electronically controlled systems.
3. Can you recharge my A/C on-site?
Yes. Our mobile truck repair units can perform A/C diagnostics, recharging, and minor repairs on location.
4. Is refrigerant recharge included in fleet maintenance?
Absolutely. We include seasonal checks and recharging in our fleet maintenance plans to prevent downtime during peak weather.
5. Do you use EPA-approved refrigerants?
Yes. All refrigerants and procedures comply with EPA standards for safety and environmental responsibility.
We proudly serve Sanford, FL and all surrounding areas including Lake Mary, Deltona, DeLand, Altamonte Springs, Orlando, Winter Springs, Apopka, Longwood, and more. Whether you need reliable diesel truck repair or fast RV repair near Sanford, FL, our team is ready to get you back on the road.
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