1. What is an Underfloor Heating Cost Calculator?

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

Purpose: It helps homeowners and installers estimate running costs for underfloor heating systems in the UK.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The heat output is converted to kWh and divided by the system efficiency (COP), then multiplied by electricity cost and operating time.

3. Importance of Heating Cost Calculation

Details: Accurate cost estimation helps budget for heating expenses and compare different heating systems.

4. Using the Calculator

Tips: Enter heat output in BTU/h, COP (default 3.5), electricity price (default £0.34/kWh), and operating time in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical COP value for underfloor heating?
A: For heat pumps, COP typically ranges from 3 to 5. Higher values indicate more efficient systems.

Q2: How do I find my heat output (Q)?
A: This is usually specified by your heating system manufacturer or can be calculated based on room size and insulation.

Q3: What's the current UK electricity price?
A: As of 2023, average is £0.34/kWh but check your energy provider for exact rates.

Q4: Does this include installation costs?
A: No, this only calculates operating costs. Installation costs vary by system type and property size.

Q5: How accurate is this calculation?
A: It provides a good estimate but actual costs may vary based on insulation, thermostat settings, and temperature fluctuations.