@sheddi @BenAveling Exactly this.

Except that the gas boiler will need 10Mwh of energy input whereas the heat pump will likely only need 3-4Mwh input, depending on how cold the winter is.

As gas prices continue to rise significantly faster than electricity (see January, where we expect a 10% electricity rise and 20% rise in gas prices) heat pumps just become more and more affordable.