1. What is Heat Pump Capacity?

The heat pump capacity represents the heating or cooling output of a heat pump system when paired with an air handler. It's determined by the heat load from the air handler and the system's coefficient of performance (COP).

2. How Does the Calculator Work?

The calculator uses the heat pump capacity formula:

Where:

• \( Q_{\text{air}} \) — Heat load from air handler (kW)
• \( \text{COP} \) — Coefficient of performance (unitless)

Explanation: The capacity is simply the product of the air handler's heat load and the system's efficiency (COP).

3. Importance of Heat Pump Capacity Calculation

Details: Proper capacity calculation ensures the heat pump system is appropriately sized for the space it needs to heat or cool, optimizing energy efficiency and performance.

4. Using the Calculator

Tips: Enter the heat load from the air handler in kW and the COP value. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical COP value for heat pumps?
A: Modern heat pumps typically have COP values between 2.5 and 5.0, with higher values indicating better efficiency.

Q2: How do I determine the heat load from my air handler?
A: The heat load can be calculated based on the air handler's specifications or measured through performance testing.

Q3: Does this calculation work for both heating and cooling?
A: Yes, but the COP will differ between heating and cooling modes, so use the appropriate COP for the mode you're calculating.

Q4: What factors affect heat pump capacity?
A: Outdoor temperature, system maintenance, refrigerant charge, and air handler performance all affect actual capacity.

Q5: Should I use this for system sizing?
A: This provides a basic estimate, but professional load calculations are recommended for proper system sizing.