BTU Formula:
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Definition: This calculator converts electrical power in watts to British Thermal Units per hour (BTU/h) specifically for Stelrad heating products in the UK.
Purpose: It helps determine the heating capacity needed for rooms when selecting Stelrad radiators or other heating products.
The calculator uses the formula:
Where:
Explanation: The conversion factor 3.412 represents how many BTUs are produced per watt-hour of electrical energy.
Details: Proper BTU calculation ensures you select radiators with adequate heating capacity for your space, improving comfort and energy efficiency.
Tips: Enter the power rating in watts (typically found on your Stelrad product specifications). The value must be > 0.
Q1: Why 3.412 as the conversion factor?
A: This is the standard conversion factor where 1 watt = 3.412 BTU/h.
Q2: How do I find the power rating (W) of my Stelrad product?
A: Check the product specifications, technical datasheet, or nameplate on the radiator.
Q3: Does this calculation account for room size?
A: No, this is a direct conversion. For room-specific calculations, use our Room BTU Calculator.
Q4: Is this calculator specific to Stelrad products?
A: While designed for Stelrad, the calculation applies to any electrical heating product.
Q5: What's the difference between BTU and BTU/h?
A: For heating applications, BTU typically means BTU per hour (BTU/h), as heating capacity is measured per unit time.