Heating Cost Formula:
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Definition: This calculator estimates the cost of home heating based on energy use, price per unit, and system efficiency.
Purpose: It helps homeowners compare heating costs between different systems or fuel types to make informed decisions.
The calculator uses the formula:
Where:
Explanation: The formula accounts for both the raw energy cost and how efficiently your system converts that energy into heat.
Details: Accurate cost estimation helps budget for heating expenses, compare different heating options, and identify potential savings.
Tips: Enter your energy consumption, the price you pay per unit of energy, and your system's efficiency percentage (default 80%). All values must be > 0.
Q1: What units should I use for energy?
A: Use consistent units (therms for gas, kWh for electricity, gallons for oil) matching your utility bills.
Q2: How do I find my system's efficiency?
A: Check your furnace/boiler specifications (AFUE rating for gas systems, HSPF for heat pumps).
Q3: Why does efficiency affect cost?
A: Less efficient systems waste more energy, requiring more fuel to produce the same amount of heat.
Q4: Can I compare different fuel types?
A: Yes, but convert all to consistent energy units (e.g., million BTUs) for accurate comparison.
Q5: Does this include maintenance costs?
A: No, this calculates only fuel costs. Consider maintenance separately for total cost of ownership.