Knowing if your pool heat pump is functioning correctly is essential for a comfortably heated pool. The primary ways to check involve measuring water temperature difference and feeling the air expelled by the unit.
Key Indicators Your Pool Heat Pump is Working
You can determine if your heat pump is operating effectively by checking two main things: the temperature difference of the water passing through it and the temperature of the air it expels.
1. Water Temperature Difference
A properly working pool heat pump should significantly increase the temperature of the water as it flows through the unit.
- The Magic Number: According to expert advice, the water temperature difference between the water entering the heat pump and the water returning to the pool should be between 9 and 12 degrees Fahrenheit (°F).
- How to Measure:
- You can often measure this difference by taking the temperature of the water at an inlet pipe (before it enters the heat pump) and an outlet pipe (after it leaves the heat pump).
- Alternatively, observe the overall pool temperature rise over several hours while the heat pump is running. A consistent increase indicates it's adding heat.
If the temperature difference is within this 9-12°F range, your heat pump is effectively transferring heat to the water.
2. Expelled Air Temperature
Pool heat pumps work by extracting heat from the surrounding air. This process cools the air that is blown out of the top of the unit.
- Feeling the Air: If you walk up to the heat pump and put your hand over the top, the air blowing out should feel noticeably cool or cold. It should feel "like an air conditioner blowing on" you.
- What This Means: Cold air being expelled is a strong indicator that the heat pump's compressor and heat exchanger are functioning and successfully removing heat from the air.
Summary Checklist
Here’s a quick way to check if your pool heat pump is working:
| Check | Expected Result | Indicates |
|---|---|---|
| Water Temp. Difference | 9-12°F higher at outlet | Heat transfer is good |
| Air Blown Out of Top | Feels cool/cold (like A/C) | Heat extraction is good |
| Unit is On and Running | Display shows it's heating, fan on | Basic function |
By verifying these points, especially the temperature difference of the water and the coolness of the expelled air, you can quickly assess if your pool heat pump is operating correctly and heating your pool as it should.
