1. What is a Radiator Size Calculator?

Definition: This calculator estimates the required radiator size in kilowatts (kW) based on room area.

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:

• \( P_{kW} \) — Radiator size (kilowatts)
• \( A_{room} \) — Room area (square meters)

Explanation: The formula converts the heat requirement (44.6 BTU per square meter) to kilowatts (1 kW = 3412 BTU/hr).

3. Importance of Proper Radiator Sizing

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

4. Using the Calculator

Tips: Simply enter the room area in square meters. The value must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 44.6 BTU per square meter?
A: This is a standard value for moderate climate zones. Colder areas may need 50-60 BTU/m².

Q2: What factors can affect radiator size?
A: Room insulation, window size, ceiling height, and outside temperature all influence requirements.

Q3: Should I round up the calculated size?
A: Yes, it's recommended to round up to the nearest available radiator size.

Q4: How does room height affect the calculation?
A: For rooms higher than 2.4m, multiply the result by (actual height/2.4).

Q5: What about rooms with large windows?
A: Add 10-20% to the calculated size for rooms with significant glass area.