Energy Cost Formula:
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Definition: This calculator estimates the electricity cost of running a heat pump based on its power consumption, usage time, and electricity rate.
Purpose: It helps homeowners and businesses estimate operating costs for heat pump systems to make informed energy decisions.
The calculator uses the formula:
Where:
Explanation: The formula converts watt-hours to kilowatt-hours (dividing by 1000) then multiplies by the electricity rate.
Details: Accurate cost estimation helps with budgeting, comparing systems, and understanding the impact of usage patterns on energy bills.
Tips: Enter the heat pump's power rating in watts, estimated usage time in hours, and your electricity rate (default $0.12/kWh). All values must be > 0.
Q1: Where do I find my heat pump's power rating?
A: Check the manufacturer's specifications or nameplate on the unit. Typical residential units range from 1,500-6,000 watts.
Q2: What's a typical electricity rate?
A: Rates vary by location but average $0.12-$0.20/kWh in the US. Check your utility bill for exact rates.
Q3: Should I use peak or off-peak rates?
A: Use the rate that applies during your primary usage time. Some utilities have time-of-use rates.
Q4: Does this account for seasonal variations?
A: No, run separate calculations for different seasons as usage and rates may vary.
Q5: How accurate is this estimate?
A: It provides a baseline estimate. Actual costs may vary based on system efficiency, temperature settings, and climate.