1. What is a Radiator Sizing Calculator for Stelrad?

Definition: This calculator estimates the required radiator power (in kW) based on room area, using Stelrad's specific calculation method for UK conditions.

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 power output (kilowatts)
• \( A_{room} \) — Room area (square meters)
• 44.6 — Stelrad's specific heat requirement factor (W/m²)
• 3412 — Conversion factor from watts to kilowatts

Explanation: The formula calculates the heat requirement based on room size and converts it to kilowatts for radiator sizing.

3. Importance of Proper Radiator Sizing

Details: Correct radiator sizing ensures efficient heating, energy savings, and optimal comfort. Undersized radiators won't heat properly, while oversized ones waste energy.

4. Using the Calculator

Tips: Simply enter the room area in square meters. The calculator uses Stelrad's standard UK heat requirement of 44.6W per m².

5. Frequently Asked Questions (FAQ)

Q1: Why is 44.6W/m² used?
A: This is Stelrad's standard heat requirement for UK homes with average insulation and typical room heights.

Q2: When should I adjust the heat requirement?
A: For poorly insulated rooms, increase by 10-20%. For well-insulated rooms or underfloor heating, decrease by 10-20%.

Q3: Does this account for room height?
A: The 44.6W/m² factor assumes standard UK room heights (2.4-2.7m). For higher ceilings, increase the requirement proportionally.

Q4: How do I convert room dimensions to m²?
A: Multiply length by width in meters. For irregular rooms, divide into rectangular sections and sum their areas.

Q5: Is this suitable for all radiator brands?
A: While the calculation method is universal, output ratings may vary between manufacturers. Always check specific radiator specifications.