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Don’t sweat in the summer or freeze in the winter. H&H Diesel Service in Seguin, TX offers expert HVAC repairs for diesel trucks and equipment to keep your cabin climate-controlled and driver-ready.
Heavy-Duty HVAC Repair in Seguin, TX
AC blowing hot air? Heater not working in the morning? Your HVAC system isn’t just about comfort—it’s a safety essential in long-haul driving. At H&H Diesel Service, we provide full-service heavy-duty HVAC repair to keep your climate control running strong, no matter the season.
We diagnose and repair all HVAC issues, including:
- AC system diagnostics and recharge
- Compressor and condenser replacement
- Blower motor repairs
- Heater core replacement
- Refrigerant leak testing and repair
- Blend door and actuator replacement
- Electrical controls and sensor diagnostics
- Full HVAC system inspection and maintenance
If your truck's air system won’t cool, heat, or defrost properly, we’ll find the issue fast. We service all makes and models, from semis and buses to RVs and construction equipment.
Experience the H&H Difference
Certified HVAC Diagnostics: Our techs are trained to repair diesel HVAC systems with precision—from wiring issues to compressor failures.
Quick Turnarounds Without Cutting Corners: With 6 bays and 8 expert techs, we get your truck or equipment climate-ready without long waits.
Mobile Repairs: Can’t make it to the shop? We offer dependable roadside assistance and scheduled mobile repairs to a 25-mile radius of Seguin, TX.
Straightforward Communication: You’ll always know what’s wrong, what’s getting fixed, and what it will cost—no pressure, no upselling.
Work You Can Count On: We back every HVAC repair with a 30-day warranty on workmanship and honor all manufacturer part warranties.
Contact Us About HVAC Repair Now: Call 210-332-5821!
If your truck’s AC or heater isn’t working right, don’t sweat it—call 210-332-5821 for professional truck AC repair at H&H Diesel Service. We’ll get your HVAC system working the way it should—fast.
FAQs
What Areas Do You Serve For Heavy-Duty HVAC Repair?
We’re located at 7310 I-H 10 West, Seguin, TX 78155, near the I-10 intersection. We also proudly serve San Antonio, TX; Lockhart, TX; Luling, TX; New Braunfels, TX; San Marcos, TX; Cibolo, TX; Schertz, TX; Marion, TX; McQueeney, TX; Geronimo, TX; New Berlin, TX; Santa Clara, TX; and Lake Dunlap, TX.
Why Is My Truck AC Blowing Warm Air?
Your AC could be blowing warm air due to low refrigerant, a failing compressor, or a clogged condenser. It may also be an electrical or sensor issue. A full inspection will identify the cause quickly.
Can a Truck AC Compressor Be Repaired?
Yes, depending on the failure. Some compressors can be rebuilt, but many require replacement. We’ll inspect the system and advise on the most cost-effective and reliable solution.
How Can I Get Heavy-Duty HVAC Repair?
Just call 210-332-5821 to schedule an appointment at H&H Diesel Service. Our experienced team will diagnose your HVAC system, make the necessary repairs, and keep your cab comfortable year-round.
Diesel Repairs That Last
We service a wide range of diesel-powered vehicles and equipment—including heavy-duty trucks, medium-duty box trucks, buses, RVs, heavy equipment, and commercial fleets. Whether it’s a Class 8 semi-truck or a bulldozer, we’ve got the tools and expertise to get it done. Our team knows diesel systems inside and out and delivers quality repairs that last.
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Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner
