This paper presents an energy performance comparison of air to water heat pump manufacturer quoted values. calculated seasonal performance values from standards and actual in-use values for space heating mode only. Within this. the paper determines whether an in-use factor would be suitable to correct performance predictions where differences exist. https://www.diegojavierfares.com/flash-find-Bushranger-Awning-2-5m-W-x-2-0m-L-2-Year-No-Fuss-Warranty-AW2000-best-save/