Heating Cost Formula:
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Definition: This calculator estimates the cost to heat a home based on the required BTUs, fuel price per BTU, and heating system efficiency.
Purpose: It helps homeowners and contractors estimate heating costs for budgeting and system comparison.
The calculator uses the formula:
Where:
Explanation: The formula calculates raw fuel cost then adjusts for system efficiency.
Details: Accurate heating cost estimates help with budgeting, comparing fuel options, and evaluating system upgrades.
Tips: Enter the BTUs needed, price per BTU (default $0.00002 for natural gas), and system efficiency (default 80%). All values must be > 0.
Q1: How do I find my home's BTU requirements?
A: Use a heat loss calculator or consult an HVAC professional. Rule of thumb: 20-40 BTUs per sq ft depending on climate.
Q2: What's a typical price per BTU?
A: Natural gas ≈ $0.00002/BTU, propane ≈ $0.00003/BTU, electricity ≈ $0.00034/BTU (varies by location).
Q3: What efficiency should I use?
A: Modern furnaces: 80-98%, boilers: 80-95%, heat pumps: 200-300% (as COP).
Q4: Does this include delivery fees or taxes?
A: No, this calculates only fuel cost. Add 10-20% for additional charges.
Q5: How can I reduce heating costs?
A: Improve insulation, upgrade to a more efficient system, or consider alternative heat sources.