The look of the heat pump has a considerable influence on its efficiency. Lots of air source heat pumps are created primarily as air-con units, generally for use in summer season temperatures. The ECOMOD 290HT array of monobloc air source heat pumps are available 3 chassis measurements and five outputs: https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/