You need to size the heat pump based on the gas consumption over a year, not the instant supply. Here is a very good explanation: https://protonsforbreakfast.w

You need to size the heat pump based on the gas consumption over a year, not the instant supply. Here is a very good explanation: https://protonsforbreakfast.wordpress.com/2022/04/05/what-size-heat-pump-do-i-need-a-rule-of-thumb/ https://protonsforbreakfast.wordpress.com/2022/04/05/what-si...