1. What is an Electric Radiator Calculator?

Definition: This calculator estimates the required wattage for an electric radiator based on room volume in cubic meters.

Purpose: It helps UK homeowners and professionals determine the appropriate radiator size for efficient room heating.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Radiator wattage (Watts)
• \( V \) — Room volume (cubic meters)

Explanation: The standard UK calculation uses 40 watts per cubic meter for well-insulated rooms.

3. Importance of Correct Radiator Sizing

Details: Proper sizing ensures efficient heating, energy savings, and prevents under- or over-heating of rooms.

4. Using the Calculator

Tips: Measure your room's length, width, and height, multiply them together to get volume in m³, then enter this value.

5. Frequently Asked Questions (FAQ)

Q1: Why 40 watts per m³?
A: This is the standard calculation for modern, well-insulated UK homes. Older properties may need more.

Q2: How do I calculate room volume?
A: Multiply room length × width × height (all in meters). For example, 5m × 4m × 2.5m = 50m³.

Q3: When would I need more than 40W/m³?
A: For older properties, rooms with high ceilings, or poor insulation, consider 50-60W/m³.

Q4: What about rooms with lots of windows?
A: Add 10-20% to the calculated wattage for rooms with multiple or large windows.

Q5: Can I use this for bathrooms?
A: Bathrooms typically need higher wattage - consider a 750-1000W radiator regardless of size.