How to Solve Air in the SystemUpdated 5 days ago
If you’re experiencing slow or irregular water flow, loud or straining noises, frequent filter cycling, or a low water level in the filter housing, this is typically caused by air entering the system or restricted water flow, not a system defect.
Please review the steps below carefully.
Step 1: Check Your Filter Maintenance
A clogged or old filter is the most common cause of restricted flow.
When was the last time you cleaned your filter?
When was it last replaced?
Maintenance guidelines:
Clean the paper fiber and mesh filter every 1-2 weeks
Replace the filter every 6-8 weeks days
If your filter maintenance is up to date, continue to the next step.
Step 2: Check the Filter Housing Water Level
During normal operation, the filter housing may sit around 1/3 to 1/4 full.
If the water level drops significantly lower than that, it usually means air is entering the system.
Step 3: Power Off Before Adjusting
Always turn the chiller OFF and unplug it before inspecting or adjusting any components.
Step 4: Check the Air Release Valve (Very Common Cause)
The air release valve must be fully CLOSED during normal operation.
It should only be opened briefly while the system is OFF to release trapped air.
If the valve is left open during operation, it will:
Pull air into the system
Cause loud or straining noises
Reduce water flow
Create shaking or vibration
Ensure the valve is fully closed before restarting the unit.
Step 5: Inspect Filter & Connections
Clean or replace the filter if needed
Ensure all hose connections are tight
Confirm O-rings are properly installed
Apply Teflon tape to threaded connections if needed
Verify gaskets are installed correctly (see installation guide)
Loose fittings or missing seals can allow air to enter the system.
Step 6: Reconnect & Properly Prime the System
After confirming everything:
Reconnect all hoses securely
Open the drain valves and allow water to flow
Keep the chiller OFF
Briefly open the air release valve until the filter fills to about 75–100%
Close the air release valve completely
Power the unit back on
You can reference the setup video for visual guidance.
Important Note
It is normal for the filter water level to lower slightly while the system is running. This does not indicate a defect unless accompanied by noise, vibration, or poor cooling performance.
Still Experiencing Issues?
If you have followed all the steps above and are still experiencing irregular flow or noise, please contact support at [email protected] with:
A short video of the unit running
A clear photo of the filter housing water level
We’ll review and guide you through the next steps.