An Auxiliary Power Unit (APU) is a secondary power source that provides electricity to power systems like air conditioning, heating, lights, and electronic devices in a truck's cabin without using the truck’s main engine. The No Idle APU from Corunclima takes this concept to the next level by allowing drivers to run their air conditioning, heating, and other vital systems without leaving the engine running. This not only improves comfort but also significantly reduces fuel consumption, emissions, and the wear and tear on the truck’s primary engine