The design of a heat pump has a substantial effect on its performance. Several air source heat pumps are built principally as air con units, primarily for use in summer temperatures. The ECOMOD 290HT selection of monobloc air source heat pumps come in a few chassis dimensions and five outputs: https://purethermal.co.uk/media-news/q4-launch-lithium-large-capacity-r290-ashp-from-pure-thermal-and-enerblue/