| Comment | The efficiency is slightly counterintuitive, because it works like a reverse refridgerator
They're around 300% efficient (i.e. you get 3 units of heat energy out for every unit of electricity you put in), depending on the exact installation location and building thermal properties
So basically you get heat energy for about a third of the running cost of resistive electrical heating, however the upfront capital cost is fairly substantial, hence the grants.
Pre-Ukraine the overall cost per unit energy (taking into account upfront cost) would be about equivalent to a gas boiler, but obviously right now they're actually a lot cheaper overall, and especially if combined with insulation upgrades.
If you've got an eligible home this is a no-brainer |
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