The patented controller recommended by Enercon International works on any air conditioning unit with a hermetically sealed compressor. Anything from a window unit to a 10 ton unit and larger. A smart logic circuit in the controller maintains the air conditioner at maximum efficiency. Unlike alternative air conditioner controllers that are time or movement activated, the Enercon International controller has a dew point sensor installed adjacent to the condensor that turns the air conditioner off once the dew point has been reached. This is the most exact way to insure no electricity is wasted because air will not be cooled beyond the dew point even if the air conditioner is operating on maximum cold and full blower fan. Alternative types of controllers fall short of achieving maximum savings because their arbitrary shutoff criteria still allows the air conditioner to be running past the point that it is possible to continue cooling the air. Enercon International recommended air conditioning controllers typically save 15-25% on the air conditioning portion of the electric bill.