1. What is an Underfloor Heating Cost Calculator?

Definition: This calculator estimates the operating cost of underfloor heating systems based on heating output, system efficiency, electricity rate, and operating time.

Purpose: It helps homeowners and contractors estimate energy costs for electric underfloor heating systems or heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Total heating cost ($)
• \( Q \) — Heating output (BTU/h)
• \( COP \) — Coefficient of performance (typically 3-5 for heat pumps)
• \( P_{kwh} \) — Electricity cost ($/kWh)
• \( t \) — Operating time (hours)

Explanation: The formula converts heating output to electrical energy consumption using the system's efficiency (COP), then multiplies by electricity cost and operating time.

3. Importance of Heating Cost Calculation

Details: Accurate cost estimation helps in budgeting, comparing heating systems, and optimizing energy usage for underfloor heating installations.

4. Using the Calculator

Tips: Enter the heating output in BTU/h, COP (default 4), electricity rate (default $0.15/kWh), and operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical COP for underfloor heating?
A: Electric systems have COP=1, while heat pumps typically range from 3-5 depending on temperature and system quality.

Q2: How do I find my heating output (Q)?
A: Check your system specifications or use heat loss calculations for your space (typically 25-35 BTU/sq.ft for well-insulated homes).

Q3: What's the average electricity rate?
A: US average is about $0.15/kWh, but check your utility bill for accurate rates.

Q4: Does this include installation or maintenance costs?
A: No, this only calculates operating costs based on energy consumption.

Q5: How accurate is this estimate?
A: It provides a theoretical estimate; actual costs may vary based on temperature settings, insulation, and system performance.