1. What is a Heat Pump Efficiency Calculator?

Definition: This calculator determines the Coefficient of Performance (COP) for heat pumps, which measures their efficiency.

Purpose: It helps HVAC professionals and homeowners evaluate the energy efficiency of heat pump systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( COP \) — Coefficient of Performance (unitless)
• \( Q \) — Heat output (watts)
• \( P \) — Power input (watts)

Explanation: The COP is calculated by dividing the heat energy output by the electrical energy input.

3. Importance of COP Calculation

Details: Higher COP values indicate more efficient heat pumps. A COP of 3 means the heat pump produces 3 units of heat for every unit of electricity consumed.

4. Using the Calculator

Tips: Enter the heat output (in watts) and power input (in watts). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a good COP value?
A: Typically, a COP above 3 is considered good for modern heat pumps. Values range from 2-5 depending on conditions.

Q2: How does COP differ from EER or SEER?
A: COP is a simple ratio, while EER and SEER are seasonal efficiency ratings that account for varying conditions.

Q3: Does COP change with temperature?
A: Yes, COP decreases as outdoor temperatures drop, as more energy is needed to extract heat from colder air.

Q4: Can COP be less than 1?
A: For heat pumps, COP should always be >1. If it's ≤1, the system is operating less efficiently than simple electric resistance heating.

Q5: How can I improve my heat pump's COP?
A: Regular maintenance, proper sizing, and using in moderate climates can help maintain high COP values.