Thermo King UT-1290
The UT-1290 is specifically engineered for under-the-box mounting and is an ideal transport refrigeration solution for Class 5–7 vehicles.
Why the UT-1290
Up to 39,000 BTU/hr
It has the highest cooling capacity in its class: the funnel evaporator version is rated up to 39,000 BTU/hr at 35°F return air, 100°F ambient and high-speed engine.
Cool bigger loads, faster
It serves larger box truck sizes so you can reduce trips by transporting bigger loads, and its new compressor reaches set points faster.
Built for under-the-box mounting
It is engineered for under-the-box mounting on Class 5–7 trucks and suits trucks with limited clearance for a nose- or top-mounted unit.
Smaller, lighter, quieter
Nearly 8 inches narrower, over 80 pounds lighter and quieter than its predecessor, it allows more load weight and better fuel efficiency.
Easier to service
Designed with ease of access in mind, it enables faster servicing and minimizes downtime, with one fewer belt and better belt alignment.
Backup for temperature-critical loads
It can be used as backup cooling for temperature-critical loads and can complement nose-mounted systems for added payload protection.
Overview
- 39,000BTU/hrCooling at 35°F on engine power, with the funnel evaporator
- 33,000BTU/hrCooling at 35°F on electric standby, with the funnel evaporator
- 2,000hoursEngine maintenance interval
- Class5–7The truck classes Thermo King engineered it for
The UT-1290 is Thermo King's undermount refrigeration unit for Class 5–7 box trucks, built to mount under the cargo box. It suits trucks with limited clearance for a nose- or top-mounted unit and can also add backup cooling alongside one.
Built under the box.
What Thermo King changed in its newest undermount unit.
Cool bigger loads, faster.
The UT-1290 serves larger box truck sizes, so you can cut trips by carrying bigger loads. It has the highest cooling capacity in its class, and its new compressor design reaches set points faster and recovers temperature quicker after the door opens.
Built for the space under the box.
Thermo King engineered the UT-1290 for under-the-box mounting. It suits trucks with limited clearance for a nose- or top-mounted unit, and it can also work alongside a nose-mounted system for added payload protection.
- Can be used as backup cooling for temperature-critical loads
Easier to service.
The redesigned reciprocating compressor has an improved power tray, better belt alignment and one fewer belt. Thermo King designed the unit for easy access, so servicing is faster and downtime shorter.
Smaller, lighter, quieter.
The UT-1290 is nearly 8 inches narrower and over 80 pounds lighter than its predecessor, which leaves room for more load and helps fuel efficiency. It's also quieter than the previous model, for driver comfort and fewer community complaints.
Built for the road.
- Two evaporator setupsS3 + S3 evaporators or a funnel evaporator, each with its own ratings
- Electric standbyMotor options for 460/3/60 or 230/3/60 power, rated 10 hp
- EngineTK376U, 3 cylinder, liquid cooled, rated 19.6 hp
- CompressorX430, reciprocating, 4 cylinder, 30 cu. in.
Compare the UT-1290.
Side by side with another large-truck unit, with only the differences showing.
Every truck unit side by sideUnit specs
Specs for the UT-1290, with their test conditions.
Refrigeration capacity: engine power (BTU/hr, up to)
| Return air to evaporator | S3 + S3 | Funnel evaporator |
|---|---|---|
| 35°F | 37,000 | 39,000 |
| 0°F | 21,500 | 22,500 |
| -20°F | 12,100 | 12,700 |
System net cooling capacity at 100°F ambient temperature and high-speed engine/60 Hertz electric power. Each figure is an "up to" rating.
Refrigeration capacity: electric power (BTU/hr, up to)
| Return air to evaporator | S3 + S3 | Funnel evaporator |
|---|---|---|
| 35°F | 31,500 | 33,000 |
| 0°F | 16,000 | 16,800 |
| -20°F | 8,500 | 9,000 |
System net cooling capacity at 100°F ambient temperature and high-speed engine/60 Hertz electric power. Each figure is an "up to" rating.
Heating capacity (35°F/0°F ambient)
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| Engine power BTU/hr (up to) | 15,000 | 15,000 |
| Electric power BTU/hr (up to) | 10,900 | 10,900 |
Airflow: on high speed engine operation
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| Airflow volume @ 0 Pa static pressure | 2,600 ft³/min | 1,970 ft³/min |
Weight (including evaporator)
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| With Smart Power electric standby | 1,309.5 lbs | 1,220 lbs |
Includes the evaporator; T-90 Series weights cover the condensing unit alone.
Engine: 3 cylinder, liquid cooled
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| Model | TK376U | TK376U |
| Rating | 19.6 hp | 19.6 hp |
| Maintenance interval | 2,000 hrs | 2,000 hrs |
Compressor: reciprocating 4 cylinder
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| Model | X430 | X430 |
| Displacement | 30 cu. in. | 30 cu. in. |
Electric standby motor options
| Specification | S3 + S3 | Funnel evaporator |
|---|---|---|
| Voltage / phase / cycles | 460/3/60 or 230/3/60 | 460/3/60 or 230/3/60 |
| Rating | 10 Hp | 10 Hp |
Resources
Spec sheets, brochures and manuals for the UT-1290. Each opens on thermoking.com.
Every spec sheet and manual- BrochureUT-1290 brochurePDF · 382 KB · TK 57550-1-PLOpen UT-1290 brochure (PDF, opens in a new tab)
Keep it running.
The service, parts and plans behind every unit TKSE sells.
Service Factory-trained technicians at seven shops, and mobile service trucks that come to the unit.
Parts Every TKSE shop has a parts department with genuine Thermo King parts.
Guaranteed Maintenance Thermo King's fixed-cost agreement for planned and unscheduled maintenance and breakdown repairs. Your shop sets it up.
Get a quote on the UT-1290.
Tell us what you need and pick your shop. Or call and talk it through.
- Seven shops in Florida, Georgia and Mississippi.
- Factory-trained technicians, with ongoing training.
- A parts department at every shop.
- Service trucks that come to the unit.
Questions
About the UT-1290. Anything else, call your shop.
What trucks is the UT-1290 for?
Class 5–7 box trucks. Thermo King engineered it for under-the-box mounting, for trucks with limited clearance for a nose- or top-mounted unit, and it can also complement a nose-mounted system.
Which evaporator setup should I choose?
There are two. With the funnel evaporator it's rated up to 39,000 BTU/hr at 35°F on engine power; with S3 + S3 evaporators, up to 37,000. The S3 + S3 setup moves more air: 2,600 ft³/min against 1,970. Your shop can match the setup to your truck body.
Can it run on shore power?
Yes. Electric standby motor options cover 460/3/60 and 230/3/60 power, rated 10 hp. On electric power at 35°F it's rated up to 33,000 BTU/hr with the funnel evaporator and 31,500 with S3 + S3.
Does it heat?
Yes. Heating is rated at up to 15,000 BTU/hr on engine power and 10,900 on electric, at 35°F/0°F ambient, with either evaporator setup.
How often does the engine need service?
The maintenance interval is 2,000 hours.
How is it different from the unit it replaces?
It's nearly 8 inches narrower, over 80 pounds lighter and quieter, with a redesigned compressor that has one fewer belt.
Who services it?
TKSE's factory-trained technicians, in its shops and on its mobile service trucks.
Other Thermo King truck units
Compare truck units
Get a quote on the UT-1290 from TKSE.
Or call your shop with a question about the UT-1290.