Heating Cost Formula:
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Definition: This calculator estimates the cost to heat a home based on the required BTUs, energy price, and heating system efficiency.
Purpose: It helps homeowners and contractors estimate heating expenses for better budgeting and system comparisons.
The calculator uses the formula:
Where:
Explanation: The formula calculates raw energy cost then adjusts for system efficiency (higher efficiency = lower cost).
Details: Accurate cost estimation helps with energy budgeting, comparing heating systems, and identifying potential savings.
Tips: Enter the BTUs needed, price per BTU (default $0.00001), and system efficiency (default 80%). All values must be > 0.
Q1: How do I find my home's BTU requirements?
A: Use a BTU calculator or consult HVAC professionals who perform Manual J load calculations.
Q2: What's a typical price per BTU?
A: Varies by fuel type: natural gas ~$0.00001/BTU, electricity ~$0.00003/BTU, oil ~$0.00002/BTU.
Q3: What efficiency should I use?
A: Modern furnaces: 80-98%, boilers: 80-95%, heat pumps: 200-300% (COP), electric heaters: 100%.
Q4: Does this include delivery fees or taxes?
A: No, this calculates only the raw energy cost. Add 10-20% for delivery fees and taxes.
Q5: Can I compare different fuel types?
A: Yes, input each fuel's BTU price and system efficiency to compare costs.