Thermo King Authorized DealerAuxiliary Power Units
Thermo King TriPac diesel and Envidia all-electric APUs deliver driver comfort, fuel savings, and idle elimination. The smart choice for modern fleets.
TriPac APU Lineup
From the proven diesel TriPac to the revolutionary all-electric Envidia, Thermo King offers the right APU for every fleet and every driver.
3rd Generation Diesel
TriPac APU
The TriPac APU is the industry's most trusted auxiliary power unit, now in its third generation. It provides cab heating and cooling, engine block heating, and battery charging without idling the main engine. The compact, lightweight design installs easily and delivers proven reliability across millions of miles of real-world operation.
All-Electric APU
TriPac Envidia
The TriPac Envidia is Thermo King's all-electric APU, delivering zero-emission cab comfort with no diesel, no DPF, and virtually zero maintenance. Powered by advanced lithium-ion battery technology, it runs silently all night to keep drivers comfortable and compliant with the strictest anti-idling regulations.
Next-Gen Electric
TriPac Envidia 2
Building on the success of the original Envidia, the TriPac Envidia 2 delivers enhanced cooling capacity, faster charging, and extended battery life. Its integrated design further reduces weight and simplifies installation, making the switch to all-electric APU easier than ever.
Why Choose an APU?
An APU investment pays for itself through fuel savings, regulatory compliance, and improved driver retention. Here is why leading fleets choose Thermo King.
Idle Elimination
Eliminate main engine idling to comply with anti-idling regulations across all 50 states. Reduce wear on your primary engine and extend its service life.
Fuel Savings
Save up to $4,000+ per truck per year in fuel costs by eliminating overnight idling. The APU pays for itself through operational savings.
Driver Comfort
Full HVAC comfort with heating, air conditioning, and 110V power for appliances. Happy, well-rested drivers are safer and more productive.
DOE Verified
Department of Energy verified fuel savings and performance. Trusted, validated technology you can count on to deliver real results.
Regulatory Compliance
Meet CARB and state anti-idling regulations without compromising driver comfort. Avoid costly fines and operational disruptions.
Reduced Emissions
Significantly lower CO2, NOx, and particulate emissions compared to main engine idling. The Envidia line delivers zero-emission operation.
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