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submitted 8 months ago* (last edited 8 months ago) by Critical_Insight@feddit.uk to c/mildlyinfuriating@lemmy.world

That massive spike of 50c/kWh at the left looks tiny compared to today even though that's already insanely expensive

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[-] MangoPenguin@lemmy.blahaj.zone -3 points 8 months ago

They work, but efficiency is near 1:1 when it's that cold so there's no cost advantage over a space heater.

[-] Critical_Insight@feddit.uk 5 points 8 months ago* (last edited 8 months ago)

It's non-sensical to base the cost effectiveness of a heat pump on the handful of really cold days when it's no more efficient than electric resistive heating. You have to take into account the entire heating season. Electric resistive heating is allways 100% efficient. Air sourced heat pump is 100% efficient in the worst possible conditions. In normal conditions it's from 300% to 500% efficient. While your 650 watt space heater puts out heat at the constant rate of 650 watts, a heat pump outputs 3000 watts worth of heat while using that same 650 watts of energy.

this post was submitted on 05 Jan 2024
851 points (98.6% liked)

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