Industries
Transport Refrigeration
Diesel Transport Refrigeration Units (TRUs) are designed to protect temperature-sensitive products in trucks, trailers and seagoing containers throughout the perishable supply chain. Diesel TRUs can emit up to 29 times more harmful Diesel Particulate Matter (DPM) and 6 times more nitrous oxides (NOx) than far larger, modern diesel truck engines, contributing 27% of total greenhouse gas emissions that come from transportation vehicles in the United States.
At Rypos, we offer a straight-forward, cost-effective solution. Our Ultra Low Emission Diesel Particulate Filters (ULETRU DPFs) remove up to 95% of DPM from diesel TRU emissions immediately on installation with models compatible with either Thermo King® or Carrier® refrigeration units. Our DPFs allow TRUs to meet CARB Level 3+ and EPA emissions compliance requirements.
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Reducing the impact of transport refrigeration
Over half of the diesel transport refrigeration units on the road today (~250,000 units) nationwide emit approximately 0.1 g/bhp-hr of particulate matter emissions. Adding a Rypos ULETRU DPF to these units would reduce the impact on our environment today by over 2 million metric tons of CO2e every year.
ULETRU DPFs produce 10-12 cumulative metric tons of CO2e credits per year and over 150 metric tons of CO2e credits for the life of a diesel TRU.

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Markets we serve
TRU
Rypos products
Learn how Rypos ADPFs can help your Thermo King or Carrier TRUs achieve CARB level 3+ and EPA compliance without driver intervention.
ULETRU DPF
With over 12,000 units currently installed today, Rypos ULETRU DPFs are the diesel TRU emission control leader. Our DPFs don’t require any driver intervention, are compatible with Thermo King® or Carrier® TRUs, and are in stock and ready to ship.
Learn moreOEM and custom needs
At Rypos, our engineers are always ready to design and develop a custom active DPF for specialty applications. Whether you’re an OEM or work with non-standard diesel engines, we can build DPFs to fit your specific needs.
See howContact us
Get in touch
Have questions about our active DPFs or ready to get started? Contact our emissions control specialists today.
