As trucking focuses on efficiency and sustainability, the back wall mounted APU is redefining driver comfort. This electric auxiliary power unit installs on the rear wall of a sleeper cab, delivering air conditioning, heating, and electrical power without idling the main engine.

Why Electric APUs Are Gaining Ground

Strict anti-idling laws across North America and rising fuel costs are pushing fleets toward electric solutions. A back wall mounted APU eliminates diesel consumption, saving over 1,500 gallons per truck annually while ensuring compliance with CARB and EPA SmartWay standards.

Key Advantages

The rear-mounted design maximizes space, fitting trucks with limited installation room. Modern units deliver up to 15,000 BTU/h cooling—comparable to diesel APUs—with ultra-quiet operation for better driver rest. Electric compressors and brushless fans reduce maintenance, enabling a lifespan of 10 years or more.

Built for Long-Haul Efficiency

Powered by lithium batteries, these systems provide 8–13 hours of runtime, keeping sleeper cabs comfortable in extreme climates. Zero emissions and low noise align with sustainability goals, while fast ROI makes them a smart investment.

As fleets prioritize driver retention and operational savings, the back wall mounted APU is quickly becoming standard equipment for next-generation trucks—delivering cleaner, quieter, and more cost-effective comfort on the road.