city of the heat pump (60,000 Btu-h), an HSPF rating of 11.2, 24 hour per day usage, and a 30 day month, the following kWh can be estimated 60,000 BtuH / (11.2 x 1000) x 24 hr x 30 d = 3857 kWh/month Multiplying the kWh by the most recent...
AI summary The customer calculates energy costs for heat pump and air handler usage, estimating $1,602 for 60 days, compared to the NSP bill of $1,736. They argue their maximal usage estimates are $40 below the pre-tax bill, suggesting a discrepancy despite efficient appliance usage.