BTU Formula:
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Definition: This calculator estimates the British Thermal Units (BTU) required to heat a room based on its area.
Purpose: It helps homeowners and heating professionals determine the appropriate radiator size for UK homes.
The calculator uses the formula:
Where:
Explanation: The standard calculation assumes 60 BTU per square foot for average UK room conditions.
Details: Proper BTU estimation ensures efficient heating, prevents under/over-sized radiators, and optimizes energy use.
Tips: Enter the room area in square feet. The value must be > 0.
Q1: Why 60 BTU per square foot?
A: This is the standard value for average UK rooms with 2.4m ceilings and moderate insulation.
Q2: When should I adjust the BTU value?
A: Increase by 10-20% for rooms with high ceilings, poor insulation, or north-facing walls.
Q3: How do I measure room area?
A: Multiply room length by width in feet. For irregular rooms, break into rectangles.
Q4: What about room height?
A: The standard calculation assumes 2.4m ceilings. Add 10% per extra 0.3m in height.
Q5: Does this include windows?
A: The basic calculation doesn't. For rooms with large windows, add 10-15% extra BTU.