Exempt Non-Truck TRU Technologies
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Last updated July 23, 2024.
The non-truck TRU (trailer TRU, domestic shipping container TRU, railcar TRU, and TRU generator set) technologies listed below are exempt from the requirements of the TRU ATCM. Listing of trade names does not imply CARB endorsement in any way.
Non-Truck TRU Technologies not Regulated under the TRU ATCM
Non-truck TRU technologies in the table below are not equipped with an integral diesel engine in the TRU housing (therefore they do not meet the current definition of a TRU). These are either not zero-emission technologies because there are vehicle engine emissions related to powering the refrigeration system, or are zero-emission technologies that may be used to transport refrigerated goods, but do not meet the definition of a TRU.
| Technology | Company/Model/Web Address | Contact Information |
|---|---|---|
Direct drive refrigeration systems for truck vans (compressor powered off vehicle engine). | Carrier Transicold Integra, 20X, 30X, 40X, 50X | Contact Carrier Transicold dealer |
Thermo King V-200/Max, V-300/Max, V-520/Max, V-800/Max | Contact Thermo King dealer | |
| All-electric battery-powered refrigeration system for any size trailer, electric wheel-hub for regenerative braking and propulsion-assist, and plug-in option for shore-power usage. Retrofit conversions from conventional diesel TRUs or direct install on new trailers on production line. | ConMet eHub www.conmet.com | Brooke Bushart (657) 641-5034 Brooke.Bushart@conmet.com |
| Cryogenic pallet container for refrigerated transport applications. One or more containers can accommodate refrigerated portion of hybrid load (load containing refrigerated & non-refrigerated) or frozen portion of multi-temperature load. Liquid CO2 cooling through heat exchanger; exhausts to ambient air. | CryoLogistics Refrigeration Technologies Ltd. SnowSHIP | Rodger Talstra (250) 940-4830 |
| All-electric refrigeration systems with cold plates for step vans. Plug in while stationary to freeze eutectic cold plates. Electric fan distribute cold air to load, powered by on-board batteries and vehicle alternator. | Hackney Manufacturing Flow Thru and Freezer/Cooler Combo | Bruce Summers (805) 937-8597 |
| Electrically-driven transport refrigeration system that uses both evaporators and cold plates for single-temp truck applications. Stationary operation uses grid plug-in power; on-road uses vehicle transmission power-take-off-driven generator, battery pack and control unit to power electric drive refrigeration system. | Johnson Truck Bodies EMX series | Eduardo Navarro (310) 418-8905 |
| All-electric refrigeration systems with cabinet based cold plates for van style truck bodies or trailers. Plug in while stationary to freeze eutectic cold plates. High airflow electric fans distribute cold air to load, fans powered by on-board batteries and vehicle alternator. | Kidron Manufacturing Vari-Temp System | Bruce Summers (805) 937-8597 |
| Cryogenic refrigeration: Indirect injection liquid nitrogen. Electric fans circulate air powered by on-board battery and vehicle alternator. For truck and trailer applications. | Linde Gas: FROSTCRUISE | Mark Ewig (608) 241-3167 |
| All-electric-powered refrigeration systems for truck vans. | Thermo King B-100 | Contact Thermo King dealer |
Non-Truck TRU Zero Emission Technologies
Zero-emission (ZE) TRUs are not powered by an internal combustion engine in any way. Electric power for compressors, fans, and controls may come from on-board batteries, provided they are not re-charged by an alternator or generator that is driven by the vehicle engine or powertrain, trailer wheels, trailer axle/differential, or any other contrivance that adds to the vehicle engine load. Examples of ZE TRUs include, but are not limited to, TRUs with refrigeration systems and/or fans that are powered by batteries when on-road and use battery chargers that are plugged into the grid while stationary or connected to on-board solar panels.
| Technology | Company/Model/Web Address | Contact Information |
|---|---|---|
| All-electric plug-in refrigeration system for 28’ to 53’ trailers, battery pack for on-road, solar panel range extender for 72 hours of run time. Single or multi-temperature cooling available. | Advanced Energy Machines Solar Tech Model 48K-17 | Robert Koelsch (888) 306-6881 |
Cryogenic refrigeration: Direct injection liquid nitrogen; solar/battery-powered electric fans circulate air ventilate when cargo doors are opened; for trailer application. Direct injection cryogenic refrigeration means cryogenic fluid sprays inside cargo space. The cargo space must be ventilated before human entry to restore adequate oxygen level. | Boreas Nitrogen Cooling Systems | Jesse Siordia (248) 982-9582 |
| All-electric, plug-in refrigeration systems for stationary cold storage trailers. | Carrier Transicold Vector 8100 | Contact Carrier Transicold dealer |
| All-electric, plug-in refrigeration systems for stationary cold storage trailers. Conversions from conventional diesel TRUs. | Electric Reefer Solutions ER-230, ER-460 | Brian Lake (888) 696-2230 |
| Single temp all-electric plug-in refrigeration system for 38’ to 53’ trailers, battery pack and solar panels on roof of trailer provide 10 to 14 hours of run time. EX model has e‑axle to generate power during braking events only. Battery pack, solar panels, and e-axle integrated with Carrier Vector 8100 electric trailer TRU. | eNow K90550 & K90550EX | info@enowenergy.com |
| Industrial refrigerators utilizing cold plates to keep temperature while on route. Plug in to charging station to freeze plate and recharge on-board battery that runs on-board fan. Built in pallet for van or side-bay-style trucks and trailers. | Hackney Manufacturing ColdBev | Richard Ball (252) 495-4066 |
| All-electric refrigeration systems with cold plates for truck & trailer bodies from 12 to 38 feet. Plug in while stationary to freeze cold plates and charge batteries. Single or multi-temperature available. Battery-powered electric fans distribute cold air. | Johnson Truck Bodies AE series | Eduardo Navarro (310) 418-8905 |
| All-electric refrigeration systems with cold plates for truck & trailer bodies. Plug in while stationary to freeze cold plates. Uses natural convection to cool body while on routes up to 16 hours. | Kidron Manufacturing Cold Plate System | Bruce Summers (805) 937-8597 |
| Cryogenic refrigeration: Indirect liquid nitrogen cooling with solar photovoltaic/battery-powered electric fans circulating air for trailer applications. Direct replacement for existing trailer TRU. | Reflect Scientific Cryometrix model AZE (Advances Zero Emissions) | Sam Sampson (435) 705-4020 |
Cryogenic refrigeration: Indirect injection liquid carbon dioxide; battery-powered electric fans circulate air; for truck and trailer applications. Indirect cryogenic refrigeration means cryogenic fluid flows through a heat exchanger and exhausts to ambient air, outside of the cargo space while fans blow air across the heat exchanger to cool the cargo space. | Thermo King ST-CR 300 (truck), SB-III CR (trailer) | Contact Thermo King dealer |
| All-electric conversion for diesel truck and trailer TRUs. Includes solar panels for range extension. Diesel engine is rendered nonoperational during conversion process. | Westhill Innovation SunShifter | sales@westhillinnovation.com |