1. What is Heat Pump Efficiency (COP)?

The Coefficient of Performance (COP) is a measure of heat pump efficiency, representing the ratio of heat output to energy input. A higher COP indicates a more efficient heat pump system.

2. How Does the Calculator Work?

The calculator uses the COP formula:

Where:

• Heat Output — Thermal energy delivered by the heat pump (kW)
• Energy Input — Electrical energy consumed by the heat pump (kW)

Explanation: The COP represents how many units of heat energy are produced for each unit of electrical energy consumed.

3. Importance of COP Calculation

Details: Calculating COP is essential for evaluating heat pump performance, comparing different systems, optimizing energy efficiency, and estimating operating costs.

4. Using the Calculator

Tips: Enter heat output and energy input values in kilowatts (kW). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a good COP value for a heat pump?
A: Typically, a COP of 3-4 is considered good for air-source heat pumps, while ground-source heat pumps can achieve COPs of 4-5 or higher.

Q2: How does temperature affect COP?
A: COP decreases as the temperature difference between heat source and delivery increases. Heat pumps are most efficient in moderate climates.

Q3: What's the difference between COP and efficiency?
A: While efficiency is typically expressed as a percentage (≤100%), COP can exceed 100% (or 1.0) because heat pumps move heat rather than generate it.

Q4: Can COP be less than 1?
A: Yes, in extremely cold conditions or with poorly maintained systems, COP can drop below 1, making resistive heating more efficient.

Q5: How often should COP be measured?
A: Regular COP measurements help monitor system performance. Seasonal performance factors should be evaluated annually for optimal maintenance.