Heat Pump BTU Output Formula:
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Definition: This calculator estimates the heat output (in BTU/h) of a heat pump based on its power consumption (kW) and coefficient of performance (COP).
Purpose: It helps HVAC professionals and homeowners determine the heating capacity of a heat pump system.
The calculator uses the formula:
Where:
Explanation: The formula converts electrical input to thermal output, accounting for the heat pump's efficiency (COP).
Details: Proper BTU calculation ensures adequate heating capacity for a space, energy efficiency, and proper system sizing.
Tips: Enter the heat pump's power consumption in kW and its COP (default 3.0). All values must be > 0.
Q1: What is a typical COP value?
A: Modern heat pumps typically have COPs between 2.5 and 4.0, with higher values indicating better efficiency.
Q2: Why 3412 in the formula?
A: This is the conversion factor from kWh to BTU (1 kWh = 3412 BTU).
Q3: How do I find my heat pump's COP?
A: Check manufacturer specifications or energy guide labels. It may vary with temperature conditions.
Q4: Can I use this for cooling capacity?
A: For cooling, use EER instead of COP (BTU = kW × 1000 × EER ÷ 3.412).
Q5: What's the difference between BTU and BTU/h?
A: Heat pump capacity is typically measured in BTU per hour (BTU/h), though often abbreviated as just BTU.