1. What is Underfloor Heating Cost per m²?

Definition: This calculator estimates the operating cost per square meter for underfloor heating systems.

Purpose: It helps homeowners and builders evaluate the energy efficiency and operating costs of underfloor heating installations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Cost per square meter ($/m²)
• \( Q \) — Heat output (BTU/h)
• \( COP \) — Coefficient of performance (typically 3-5 for heat pumps)
• \( P_{kwh} \) — Energy price ($/kWh)
• \( t \) — Operating time (hours)
• \( A \) — Heated area (m²)

Explanation: The formula accounts for system efficiency (COP), energy costs, and distributes the total cost over the heated area.

3. Importance of 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 system's heat output, COP (default 4), energy price (default $0.15/kWh), operating time, and area. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical COP value?
A: For heat pumps, COP typically ranges from 3-5. Higher values indicate better efficiency.

Q2: How do I find my system's heat output?
A: Check manufacturer specifications or calculate based on room heat loss calculations.

Q3: Does this include installation costs?
A: No, this only calculates operating costs. Installation is a separate upfront cost.

Q4: Why convert BTU/h to kW in the calculation?
A: Energy prices are typically per kWh, and 1 kW = 3412.14 BTU/h, making kW a more practical unit for cost calculations.

Q5: How accurate is this estimate?
A: It provides a theoretical estimate. Actual costs may vary based on insulation, thermostat settings, and real-world efficiency.