But then Emily confirmed me the spreadsheet the place she has tracked their power use, measured in kilowatt hours (kWh). In a latest 12 months earlier than the warmth pump set up, the home consumed a complete of 28,000 kWh, which might principally have been fuel heating. In the most recent 12 months, they used simply 10,000, regardless of having had some grownup youngsters transfer residence in that point. In different phrases, they’ve reduce their power use by nearly two-thirds.
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