1. What is a Heat Pump Wattage Calculator?

Definition: This calculator estimates the electrical wattage required by a heat pump based on its heat output and coefficient of performance (COP).

Purpose: It helps HVAC professionals and homeowners determine the power consumption of heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Electrical wattage (watts)
• \( H \) — Heat output (BTU/hour)
• \( COP \) — Coefficient of Performance (unitless)

Explanation: The heat output is divided by the COP to determine the electrical power input, with conversion from BTU/h to watts.

3. Importance of Wattage Calculation

Details: Proper wattage estimation helps in sizing electrical circuits, estimating energy costs, and comparing heat pump efficiency.

4. Using the Calculator

Tips: Enter the heat output in BTU/h and the COP (default 3.5). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is COP in heat pumps?
A: COP (Coefficient of Performance) measures efficiency - the ratio of heat output to electrical energy input.

Q2: What's a typical COP value?
A: Modern heat pumps typically have COPs between 3.0 and 5.0, varying with temperature conditions.

Q3: Why convert BTU/h to watts?
A: Electrical power is measured in watts, while heat output is often given in BTU/h (1 watt = 3.412 BTU/h).

Q4: How do I find my heat pump's heat output?
A: Check manufacturer specifications or nameplate data, or use our Heat Output Calculator.

Q5: Does this include auxiliary heating?
A: No, this calculates only the heat pump's power. Add supplemental heating separately if used.