Cost Formula:
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Definition: This calculator estimates the cost of heating or cooling based on energy requirements (BTUs), energy price, and system efficiency.
Purpose: It helps homeowners and HVAC professionals estimate operating costs for heating and cooling systems.
The calculator uses the formula:
Where:
Explanation: The total energy requirement (BTUs) multiplied by energy cost is divided by system efficiency to account for energy losses.
Details: Accurate cost estimation helps in budgeting, comparing systems, and understanding energy consumption patterns.
Tips: Enter the BTUs required, price per BTU (default $0.0001), and system efficiency (default 80%). All values must be > 0.
Q1: How do I find the BTUs needed for my space?
A: Use our BTU Calculator or consult HVAC sizing guidelines based on square footage and climate.
Q2: What's a typical price per BTU?
A: This varies by energy source (electricity, gas, oil). Electricity is typically $0.0001-$0.0003 per BTU.
Q3: What efficiency should I use?
A: Modern systems range from 80-98% for furnaces, 8-12 SEER for AC units (divide SEER by 3.413 for efficiency %).
Q4: Does this include installation costs?
A: No, this only calculates operating costs based on energy consumption.
Q5: How accurate is this estimate?
A: It provides a baseline estimate. Actual costs vary with usage patterns, climate, and system maintenance.