Heating Cost Formula:
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Definition: This calculator estimates the operating cost of radiant floor heating systems based on heat output, system efficiency, and electricity rates.
Purpose: It helps homeowners and contractors evaluate the energy costs associated with radiant floor heating systems.
The calculator uses the formula:
Where:
Explanation: The heat output is divided by the system's efficiency (COP) to get electrical input, then multiplied by electricity cost and operating time.
Details: Accurate cost estimation helps in budgeting, comparing heating systems, and optimizing energy usage.
Tips: Enter the system's heat output in BTU/h, COP (default 4.0), electricity cost (default $0.15/kWh), and operating time in hours. All values must be > 0.
Q1: What is a typical COP for radiant floor heating?
A: Heat pumps typically have COP values between 3-5, while electric resistance heating has a COP of 1.
Q2: How do I find my system's heat output?
A: Check manufacturer specifications or calculate based on room size (typically 25-40 BTU/sq ft).
Q3: Why convert BTU to kWh in the calculation?
A: Electricity is billed per kWh, so we convert the heat output to equivalent electrical units.
Q4: Does this include installation costs?
A: No, this only calculates operating costs based on energy consumption.
Q5: How can I reduce my heating costs?
A: Improve insulation, use a higher COP system, or operate during off-peak electricity hours.