Costs of Running an Air-source Heat Pump

Here are my stats for electricity usage, compared to the same period a year ago (when heating and hot water were oil-fuelled):

Month	Expected units	Expected cost (£)	Actual units	Actual cost (£)
Nov '24	250	48	300	37
Dec '24	450	86	340	59
Jan '25	625	120	440	77
Feb '25	625	120	320	53

Note - The expected usage is based on my rough estimates of how much oil I might have been using each month - and that's very rough as I've never kept a close measure of how much oil was in my tank.

So it's early days in monitoring ASHP electricity usage, but I'm pleasantly surprised to see it using around 70% of what I was anticipating. And costing under £80 per month during Winter does seem quite reasonable!

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