1. What is an Electric Underfloor Heating Calculator?

Definition: This calculator estimates the power requirement for electric underfloor heating systems based on floor area.

Purpose: It helps homeowners and installers determine the appropriate heating system capacity for a given space.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Heating power required (Watts)
• \( A \) — Floor area (square meters)
• 150 — Standard wattage per square meter for underfloor heating

Explanation: The floor area is multiplied by 150 W/m², which is the typical power density for comfortable underfloor heating.

3. Importance of Proper Heating Calculation

Details: Accurate power estimation ensures comfortable room temperature, energy efficiency, and proper system sizing.

4. Using the Calculator

Tips: Simply enter the floor area in square meters. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 150 W/m²?
A: This is the standard power density for comfortable heating in most residential applications.

Q2: When would I use a different wattage?
A: Use higher values (200 W/m²) for bathrooms or rooms with high heat loss, lower values (100 W/m²) for well-insulated spaces.

Q3: Does this include insulation?
A: The 150 W/m² assumes standard insulation. Poor insulation may require higher wattage.

Q4: Is this for primary or supplemental heating?
A: 150 W/m² is typically sufficient for primary heating in moderate climates.

Q5: How do I convert to kW?
A: Divide the result by 1000 (e.g., 3000 W = 3 kW).