RigMaster Power is a leading manufacturer of auxiliary power units for the trucking industry. A RigMaster APU keeps the cab comfortable with air conditioning & heating so there is no need to idle your truck all night long while you sleep; instead you save on fuel and reduce wear & tear on your engine. In addition, with stringent government anti-idling laws in effect, RigMaster units reduce pollution & protect the environment by lowering the truck's carbon footprint. Also, the power provided by a RigMaster generator is solely for your hotel power load (appliances like your fridge, microwave and TV); none of this power is used to run the a/c. The APU has a complete stand-alone design; not linked into the truck's cooling system; only sharing the batteries & fuel. Discover the Difference of a RigMaster APU! For more information, please visit www.rigmasterpower.com.