1. What is a Central Heating Radiators Size Calculator?

Definition: This calculator determines the required size (in kW) for each radiator in a central heating system based on total heat loss and number of radiators.

Purpose: It helps homeowners and heating engineers properly size radiators to ensure efficient heating throughout a property.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( kW \) — Required radiator size (kilowatts)
• \( \text{Total Heat Loss} \) — Total heat loss of the property (kW)
• \( \text{Number of Radiators} \) — Total radiators in the system

Explanation: The total heat loss is divided equally among all radiators to determine the minimum output required for each radiator.

3. Importance of Proper Radiator Sizing

Details: Correct radiator sizing ensures efficient heating, prevents energy waste, and maintains comfortable temperatures throughout the property.

4. Using the Calculator

Tips: Enter the total heat loss of your property (from a heat loss calculation) and the number of radiators you plan to install. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my property's total heat loss?
A: A professional heat loss calculation should be performed, which considers insulation, room sizes, window types, and other factors.

Q2: Should all radiators be the same size?
A: Not necessarily. Rooms with higher heat loss may need larger radiators. This calculator provides an average size.

Q3: What if my radiators are different sizes?
A: The total output of all radiators should still equal or exceed the total heat loss.

Q4: Does this account for radiator type?
A: No. Different radiator types (panel, column, etc.) may have different outputs at the same size.

Q5: Should I add a safety margin?
A: It's common to add 10-20% to the calculated size to account for unusually cold weather.