(Redirected from EFI System partition) The EFI system partition (ESP) is a partition on a data storage device (usually a hard disk drive or solid-state drive) that is used by computers adhering to the Unified Extensible Firmware Interface (UEFI).
As much as 80 to 90% of the electrical energy used by an air compressor is converted to heat. A properly designed heat recovery unit can recover 50 to 90% of this heat for heating air or water.
The biggest reason your AC unit consumes so much electricity is to run the compressor. If you need to know why your AC unit has a compressor, check out HowStuffWorks on Air Conditioning. On the data tag, you will see energy data for the compressor and the fan.