HVAC Systems Repair Services in Ronkonkoma, NY

HVAC Systems Repair

No airflow, weak A/C, or heat that never kicks in? That's going to make every haul an absolute misery. Our heavy-duty and medium-duty HVAC repair helps you bring back reliable cabin comfort, reduce driver fatigue, and keep your fleet moving in any season.

Truck Air Conditioning Repair in Ronkonkoma, NY

Your HVAC system plays a key role in driver comfort and overall vehicle safety. Whether you're dealing with a failed compressor, a heater that won't warm, or vents blowing warm air on the coldest day, these problems affect more than just comfort. Fogged windshields, stale air, increased driver fatigue, or total climate failure can risk your route and safety.

Our team at K&M Truck Repair provides complete truck air conditioning repair and HVAC diagnostics. We service all components of your system—mechanical or electronic—and ensure reliable performance in every season.

Our services include:

  • Full air conditioning service and recharging
  • HVAC system inspections and diagnostics
  • Heating system repair and component replacement
  • Blower motor, fan, and actuator replacements
  • AC system replacement and refrigerant leak testing
  • Control panel and thermostat troubleshooting

Experience the K&M Difference!

A failed HVAC system shouldn’t stop your schedule—or your drivers. At K&M Truck Repair, we treat comfort systems with the same urgency as driveline or engine issues. Here’s what makes us different:

Dealer-Quality Repairs: Expect OEM-quality results without the long lead times or inflated costs.

Relentless Diagnostics: Our techs isolate the root causes of HVAC problems so you’re not guessing or replacing parts you don’t need.

Outstanding Customer Service: Clear timelines, constant updates, and service aligned with your route schedule.

Contact Us About Truck AC Repair Now: Call 631-331-0066!

Don’t sweat through summer or freeze through winter. Call 631-331-0066 now to schedule your truck AC repair service.
In a rush? Text our team at 833-267-3752, and we’ll get back to you as quickly as we can!

FAQs

What areas do you serve for heavy-duty and medium-duty HVAC repair?

We are located at 3045 Veterans Memorial Highway, Ronkonkoma, NY 11779, and proudly serve all of Suffolk County and parts of Nassau County.

Why is my truck's AC blowing hot air?

Your heavy-duty or medium-duty diesel truck’s AC may blow hot air due to low refrigerant levels, a faulty compressor, a clogged condenser, electrical issues, or a malfunctioning blend door. Leaks in the system or a failing pressure switch can also prevent proper cooling. A full AC inspection is recommended.

How do I know if my truck’s HVAC system needs repair?

Signs your heavy-duty or medium-duty diesel truck’s HVAC system needs repair include weak airflow, unusual smells, inconsistent temperatures, strange noises, or failure to heat or cool. Faulty blower motors, clogged filters, low refrigerant, or electrical issues are common causes. Regular HVAC checks help prevent major problems.

How can I get heavy-duty or medium-duty HVAC repair?

If your HVAC system isn’t working as it should, don’t wait. Call 631-331-0066 or text 833-267-3752 to book your heavy-duty or medium-duty HVAC repair today. We’ll make sure your cab is climate-controlled and comfortable, no matter the weather.

Repairs

Medium & Heavy-Duty Diesel Repairs

At K&M Truck Repair, we take on diesel and automotive repairs with precision and pride. From brake and suspension issues to electrical problems, drivetrain faults, and cooling system failures, our experienced mechanics get to the root of the issue fast. We don’t guess; we diagnose, repair, and stand by the quality of our work. Whether it’s a one-time fix or a recurring problem that’s been missed elsewhere, we’ve got the tools and the team to get it done right!

Reviews

Customer Testimonials

"Was looking for a new shop to work on my truck and these guys were phenomenal. Took me right in, kept me informed throughout the process and expeditiously had me back up and running. Their knowledge and workmanship is incredible. If you're looking for a great shop to bring your truck to, look no further because these are your guys,"
- Daniel

"Thank you Angel, Rich, and the crew for always doing the right thing and being there when needed.  @MorelandHose appreciates dealing with local, family-owned small businesses like yourself."

David

"My truck lights were out and Peter and Ray saved the day. Peter showed me exactly what the issue was and had me going in no time. Real honest service!!!!  I will definitely go back."

3 Brothers Family Moving

"The truck repair shop is a lifesaver for truck owners. They provide swift and skilled service, ensuring your vehicle gets back on the road in no time. A dependable choice for truck maintenance and repairs."

Kenneth

"I Highly recommend this place and people. One of the most friendly and attentive shop I’ve ever work with. Thank you Alvin for your assistance, professionalism and kindness. Thank you Peter for your skills, time, knowledge and honesty fixing my truck. You have a customer for life."

Dariusz

"This place is awesome! They got me in right away and fixed the tires on my kayak trailer. The entire staff was kind and courteous. I would highly recommend!!!"

Karen

"This company is extremely reliable! Hard workers and they go the extra mile for you. I am completely satisfied and in awe of how fast they got to me and to work. 100% recommend."

Jonathan

"Professional, friendly, and knowledgeable.  These people go above and beyond to help you fix the problem.  We had several issues with our truck (electrical, brakes, airleak).  The owner, Peter, checked out the truck and fixed it quickly!  He and his staff are extremely helpful and friendly.   These people treat you right and know their stuff!"

Lady Trucker

"Air compressor went out on my 2007 Peterbilt. Peter showed up within an hour and had me rolling again by noon next day good, honest mechanic is priceless these days I highly recommend."

Stephen

Contact & Location

Billing

Here at K&M TRUCK REPAIR, we know that any product or service that streamlines your fleet repairs saves you time and money, so we now have cbCharge available. It is a simple and free charge account that consolidates your billing through a secure online portal and provides 30-day payment terms with no interest or late fees. Your fleets repairs and maintenance are completed and billed and emailed from K&M TRUCK REPAIR. Then you get one monthly invoice from cbCharge, similar to a credit card bill.

Apply Here
Speak to a Service Advisor Now!