1. What is a Room Size Radiator Calculator?

Definition: This calculator estimates the required radiator power (in kW) based on room volume in cubic meters.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Radiator power (kilowatts)
• \( V \) — Room volume (cubic meters)
• \( 0.044 \) — Standard conversion factor for well-insulated rooms

Explanation: The room volume is multiplied by a standard factor (0.044 kW per m³) to determine the required radiator output.

3. Importance of Proper Radiator Sizing

Details: Correct radiator sizing ensures efficient heating, energy savings, and prevents underheating or overheating of spaces.

4. Using the Calculator

Tips: Enter the room volume in cubic meters (length × width × height). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What if my room isn't well insulated?
A: For poorly insulated rooms, use a higher factor (0.06-0.08 kW/m³) in the calculation.

Q2: How do I calculate room volume?
A: Measure length × width × height in meters. For irregular rooms, divide into regular shapes and sum the volumes.

Q3: Does this account for windows and external walls?
A: The standard factor assumes average conditions. Add 10-20% for rooms with large windows or multiple external walls.

Q4: What about room temperature preferences?
A: The calculation assumes a target temperature of 20-21°C. Increase by 10% for each additional degree desired.

Q5: Can I use this for whole house calculations?
A: Yes, calculate each room separately then sum the results for a whole-house radiator requirement.