1. What is a Radiator BTU Calculator?

Definition: This calculator converts radiator power from kilowatts (kW) to British Thermal Units per hour (BTU/h).

Purpose: It helps UK homeowners and heating engineers determine the appropriate radiator size for rooms.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BTU \) — British Thermal Units per hour
• \( kW \) — Kilowatts (radiator power rating)

Explanation: The conversion factor 3412 represents the number of BTUs equivalent to 1 kilowatt-hour of energy.

3. Importance of BTU Calculation

Details: Proper BTU calculation ensures your radiator can adequately heat your space, improving energy efficiency and comfort.

4. Using the Calculator

Tips: Enter the radiator's power rating in kilowatts (kW) to get the equivalent BTU output. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical kW to BTU conversion for UK radiators?
A: A standard 1.5kW radiator converts to approximately 5,118 BTU/h.

Q2: Why is BTU important for radiators?
A: BTU measures heat output, helping you match radiator capacity to room size and insulation.

Q3: How do I find my radiator's kW rating?
A: Check the manufacturer's specifications or product label for the kW rating.

Q4: What's the difference between BTU and BTU/h?
A: For radiators, we typically use BTU/h (BTUs per hour) as it measures heat output rate.

Q5: How many BTUs do I need per room?
A: As a rough guide, you need about 5,000 BTU for a small room (10m²) and 10,000+ BTU for larger rooms.