BTU Conversion Formula:
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Definition: This calculator converts electric power (watts) to BTU/h for electric garage heaters.
Purpose: It helps determine the heat output of electric garage heaters to ensure proper sizing for your space.
The calculator uses the formula:
Where:
Explanation: The formula converts electrical watts to thermal BTU/h using the standard conversion factor of 3412 BTU/h per watt.
Details: Correct BTU calculation ensures your garage heater will adequately warm the space without being oversized (wasting energy) or undersized (ineffective heating).
Tips: Enter the heater's wattage (found on the specification plate) to calculate its BTU output. Most garage heaters range from 1,500 to 5,000 watts.
Q1: Why 3412 as the conversion factor?
A: 1 watt = 3.412 BTU/h, so 3412 comes from converting kilowatts to BTU/h (1 kW = 3412 BTU/h).
Q2: How many BTUs do I need for my garage?
A: A general rule is 30-50 BTU per sq ft, depending on insulation and climate.
Q3: Does this account for heat loss?
A: No, this only converts electrical input to thermal output. Actual heating needs depend on garage insulation and outdoor temperatures.
Q4: Can I use this for other electric heaters?
A: Yes, this conversion works for any electric heating device.
Q5: What's the difference between BTU and BTU/h?
A: BTU measures energy, while BTU/h measures power (energy per hour). Heaters are rated in BTU/h.