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An air lock in your hot tub can prevent water from circulating properly, leading to performance issues and potential damage. Recognizing the symptoms early and knowing how to fix them can help keep your spa in top condition. Here’s everything you need to know about hot tub air locks.
What is a Hot Tub Air Lock?
An air lock occurs when air gets trapped in the plumbing lines of your hot tub, blocking water flow to the jets and pump. This typically happens after draining and refilling the tub, as air can become trapped in the pipes
Symptoms of a Hot Tub Air Lock
If your hot tub has an air lock you might notice:
- Jets Not Working – The jets may produce little to no water flow despite the pump running.
- Pump Making Noise – A humming or whining noise from the pump indicates it’s running dry due to an air block
- Low Water Flow – Reduced water circulation, which may cause heating issues.
- Error Codes – Some hot tubs display error codes related to flow issues.
How to Fix a Hot Tub Air Lock
If you suspect an air lock, follow these steps to resolve it:
1. Turn the Spa On and Off
Sometimes, simply turning the spa off and back on can reset the system and clear the air lock.
2. Open the Jets
Make sure all jets are fully open, allowing water to flow through freely.
3. “Burp” the Hot Tub
- Turn off the power.
- Loosen one of the pump’s union fittings slightly to release trapped air.
- Once water starts trickling out, tighten the fitting back.
- Turn the power back on and check for proper water flow.
4. Use the Bleeder Valve
Many hot tubs have a bleeder valve near the pump. Open this valve slightly to release air, then close it once water begins to flow.
5. Try the Hose Trick
- Place a garden hose inside one of the jets and turn the water on.
- The force of the water can help push air out of the lines.
- Run the pump afterward to check if the issue is resolved.
Preventing Future Air Locks
To avoid future air locks follow these best practices:
- Fill the Tub Correctly – Always fill from the filter housing to help push air out of the system.
- Check Water Levels – Keep your hot tub filled to the recommended level.
- Perform Regular Maintenance – Ensure your filters and pumps are clean and functioning properly.
Air locks in hot tubs are a common issue, but they are easy to fix with the right approach. By recognizing the symptoms early and following these simple steps, you can restore proper water circulation and enjoy a relaxing spa experience. If you need high-quality replacement parts or professional assistance, Spa Parts Experts is here to help!