Both equally indoor and out of doors elements of split programs needs to be rated to be a matched process with an indoor coil, air handler, and/or furnace. Air to air heat pumps can even be useful for cooling and will do the job very similar to traditional air-con units; https://socialbuzzfeed.com/story6584969/how-much-you-need-to-expect-you-ll-pay-for-a-good-air-source-heat-pump-installation