No-idle air conditioners for semi trucks, box trucks and heavy equipment. Karlesk truck air conditioners run from the batteries with the engine off, cutting fuel costs and engine wear during rest breaks. Most North American trucks use 12V systems, so choose a 12V model; 24V models are made for European and Asian trucks and 24V machinery.

Rooftop units install in the existing roof hatch; split units mount the condenser on the back of the cab.