When your Thermo King reefer unit throws an alarm and your load is on the clock, you need someone who shows up. Northeast Refrigeration Services is an independent mobile TRU repair operation based in Bradford, Vermont, servicing Thermo King trailer and truck refrigeration units across Vermont, New Hampshire, Maine, New York, Massachusetts, and Connecticut. We come to your yard, your dock, or the shoulder of the road — 24 hours a day, 7 days a week.
We work on the refrigeration system and the unit's diesel engine. We do not do tractor mechanical work, and we will be straight with you about that up front. What we do is get the box holding temp again so your freight arrives in spec.
Thermo King Units We Service
Thermo King runs a wide lineup across trailer and truck applications, and we service the common platforms you're most likely running. On the trailer side that includes Precedent units, the SB and S-series trailer units, and SLXe single- and multi-temp units. On the truck and smaller-box side we handle the self-powered and vehicle-powered TRUs used on straight trucks and delivery vehicles.
Rather than quote model specs we can't verify on your exact unit, we diagnose what's actually in front of us. Every reefer has its own history — hours, prior repairs, refrigerant charge, controller revision — and that's what determines the fix, not a spec sheet.
Controller Diagnostics and Alarm Codes
Most modern Thermo King trailer units run an SR-2 or SR-3 microprocessor controller, and most reefer down-time starts with an alarm code on that display. A code is a starting point, not a diagnosis. The same alarm can point to a sensor, a wiring fault, a low charge, a fuel or airflow problem, or the component the code names — and the only way to know is to test it.
We pull active and logged alarm codes, verify sensor and probe readings against actual conditions, and trace the fault to its real cause before we replace anything. That saves you from paying for a part that was never the problem. Common issues we chase down on Thermo King units include:
- High and low pressure alarms and refrigeration cycle faults
- Temperature sensor, return-air, and discharge-air probe failures
- Defrost problems and units that won't hold setpoint
- Low refrigerant charge, leaks, and compressor issues
- Not-cooling and not-heating complaints on single- and multi-temp boxes
Diesel Engine and Refrigeration Service
A reefer unit is a diesel engine and a refrigeration system working together, and we service both. On the TK diesel engine side that means starting and running problems, belts, glow and preheat issues, fuel delivery, overheating, oil and coolant service, and the routine maintenance that keeps the unit from failing on the road. Neglected engine service is one of the most common reasons a reefer strands a load.
On the refrigeration side we handle leak detection, recovery and recharge, compressor and component replacement, defrost and airflow faults, and full diagnostics on single- and multi-temp systems. We carry common Thermo King wear parts and can source what your specific unit needs. Every technician here is EPA 608 Universal certified, with six years of hands-on commercial refrigeration experience — no hype, just the certification and the hours to back the work.
Independent — Faster and Cheaper, and Honest About It
We are an independent repair service. We are not a Thermo King dealer and we are not a factory-authorized shop, and we won't pretend otherwise. Here's why that works in your favor: across much of Vermont, New Hampshire, and Maine the nearest authorized dealer can be hours away with a multi-day wait for a bay. As an independent mobile operation, we come to you and we get to work now, usually at a lower rate than a dealer's shop ticket.
Being independent also means we'll tell you the truth. If your unit is under warranty, or if a repair genuinely belongs on a dealer or factory path — a covered component, a specialized reflash, a job that only makes sense under warranty — we'll say so rather than run up your bill. Most reefer failures don't need a dealer at all, and those we fix fast. The ones that do, you'll know about honestly.
Rates and Coverage
Our rate is $150 per hour standard and $225 per hour after hours, billed portal to portal with a one-hour minimum. We run 24/7 and cover Vermont, New Hampshire, Maine, New York, Massachusetts, and Connecticut. Whether you're a single owner-operator with one reefer or a fleet with trucks scattered across New England, we keep your Thermo King units holding temp and your freight moving.
If your Thermo King reefer is down or throwing codes, call Northeast Refrigeration Services at (802) 243-9373 — 24 hours a day, seven days a week.