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How to Unblock Spa Jets: A Comprehensive Guide to Fixing Blocked Jets

Quick Summary

This blog post discusses the common issue of blocked spa jets, often caused by air locks in the plumbing lines. It provides tips on preventing air locks, such as filling the tub through the empty filter canister and bleeding the pump. The post also offers methods to fix air locks and restore jet functionality, including turning the jets on and off and checking for other issues like clogs or leaks. If all else fails, seeking professional help is recommended.


Welcome to Spa World, your go-to source for all things spa-related. In this blog post, we will be addressing a common issue that many spa owners face – blocked spa jets. There’s nothing more frustrating than stepping into your hot tub or jacuzzi and finding that the jets aren’t working as they should. But fear not! We’re here to provide you with some valuable information on how to unblock those stubborn spa jets.

Whether it’s an air lock in the plumbing lines or other issues causing the blockage, we’ve got you covered. Read on to discover preventive measures and effective methods for fixing blocked spa jets so that you can enjoy a relaxing soak without any interruptions.

Let’s dive right in!

Understanding the Issue of Blocked Spa Jets

Spa jets are an essential component of any spa experience, providing soothing water pressure and massage therapy. However, it is not uncommon for these jets to become blocked or clogged over time. This can be frustrating as it hampers the overall enjoyment and effectiveness of your spa session.

One common cause of blocked spa jets is air locks in the plumbing lines. Air locks occur when pockets of air get trapped within the system, preventing proper water flow through the jet nozzles. Another possible cause could be debris or mineral buildup that accumulates inside the pipes over time.

Signs indicating that your spa jets may be blocked include:

  1. Jets Not Working: If you turn on your hot tub but notice that some or all of its jets aren’t functioning properly – either producing weak streams or failing to operate altogether – this indicates a potential blockage issue.
  2. Humming Sound from Jets/Pump: When there’s a blockage in one or more jet nozzles, you might hear a humming sound coming from them during operation due to restricted water flow caused by obstructions.

It’s important to address these issues promptly so you can fully enjoy all aspects of your relaxing soak without any disruptions caused by malfunctioning equipment.

f air to escape, reducing the risk of air locks in the future.

3. Regular maintenance and checks:
To further prevent blocked spa jets, it is important to regularly maintain and check your spa system. This includes:

– Cleaning the filter: Remove any debris or dirt from the filter to ensure proper water flow and prevent clogs that can lead to blocked jets.

– Maintaining the appropriate water level: Ensure that the water level in your spa tub is at the recommended level. Low water levels can cause air to enter the plumbing lines and create air locks.

– Checking for leaks: Inspect the plumbing lines and connections for any signs of leaks. Leaks can disrupt the water flow and lead to blocked jets.

By following these preventive measures, you can minimize the occurrence of air locks and blocked spa jets, ensuring a relaxing and enjoyable spa experience.

Fixing Air Locks and Restoring Jet Functionality

Method 1: Turning the jets on and off in a cycle of low and high settings

If you’re experiencing blocked spa jets due to an air lock, one method to try is turning the jets on and off in a specific pattern. Start by setting the jet speed to low for about 10-20 seconds, then switch it to high for another 10-20 seconds. Repeat this cycle several times while observing if there are any improvements in jet functionality.

Method 2: Bleeding the pump to remove air bubbles

Another effective way of fixing air locks that cause blocked spa jets is bleeding the pump. To do this, first turn off your ground fault circuit interrupter (GFCI) or disconnect power from your hot tub at its source. Locate the bleed valve near your pump – usually found close to where water enters into it.

Using a screwdriver, carefully open up the bleed valve until you notice water starting trickle out slowly; be cautious not let too much water escape as we only want enough pressure release so that trapped air can escape through here instead of causing blockages elsewhere within plumbing lines.

Once some amount has trickled out successfully without excessive force applied onto system components like seals which could lead them breaking down prematurely over time with repeated use under such conditions–close back tightly again before restoring electrical supply once more ensuring safety precautions taken throughout process!

Checking for other issues such as clogs, leaks or low water levels

Sometimes blocked spa jets may not solely result from an air lock issue but rather other underlying problems affecting their performance.

Check if there are any visible signs indicating potential clogs within pipes leading towards these affected areas – debris accumulation might restrict proper flow resulting reduced output intensity when using those particular nozzles attached along walls surrounding bathtub’s interior space;

Inspect connections between different sections comprising entire circulation network including hoses connecting various parts together ensuring they’re securely fastened without any leaks present;

Lastly, ensure water level maintained at appropriate height as insufficient amounts could also lead diminished jet functionality.

Cleaning the filter and maintaining the appropriate water level

A dirty or clogged spa filter can contribute to blocked jets. Regularly cleaning your hot tub’s filter is essential for optimal performance.

Remove the cartridge from its housing and rinse it thoroughly with clean water. If necessary, use a mild detergent specifically designed for spa filters to remove stubborn debris.

Allow the filter to dry completely before reinserting it into its housing.

Additionally, make sure that you maintain an adequate water level in your spa. Low levels of water can cause air pockets within plumbing lines leading to blockages in jet flow.

By following these methods and checking for other potential issues such as clogs, leaks, or low-water levels while keeping up with regular maintenance like cleaning filters – you should be able restore proper functionality back into those previously blocked off areas allowing full enjoyment once more during each session spent relaxing inside this luxurious oasis!

When to Seek Professional Help

If you have tried all the methods mentioned above and your spa jets are still not working, it may be time to seek professional help. While many issues with blocked spa jets can be resolved by following simple steps, there are certain situations where a trained technician is necessary.

Indications that professional help may be needed include:

  1. Persistent Air Locks: If you consistently experience air locks in your spa plumbing despite attempting to prevent them or fix them using the recommended methods, it could indicate a more complex issue within the system. A qualified technician will have the expertise and tools required to diagnose and resolve these persistent air lock problems effectively.
  2. Unresolved Clogs or Leaks: If you suspect that clogs or leaks might be causing blockages in your spa jets but cannot locate or address these issues on your own, contacting a professional is advisable. They possess specialized equipment for detecting hidden clogs and leaks within the plumbing lines of spas.
  3. Electrical Problems: In some cases, malfunctioning jet pumps may stem from electrical faults rather than physical obstructions like air locks or debris buildup. Dealing with electricity around water requires caution due to safety concerns; therefore, consulting an experienced electrician who specializes in hot tubs/spas would ensure proper diagnosis and repair without compromising safety standards.
  4. Complex Mechanical Issues: Should any mechanical components directly affecting jet functionality require replacement (e.g., faulty valves), seeking assistance from professionals ensures correct installation while avoiding potential damage caused by improper handling.

Importance of contacting a spa technician for complex issues: While DIY troubleshooting techniques can often solve minor problems associated with blocked spa jets successfully, more complicated matters necessitate expert intervention. Spa technicians undergo extensive training specific towards identifying various underlying causes behind such malfunctions. They also possess knowledge about different types of spas/hot tub models along with their unique requirements. This enables them to provide accurate diagnoses as well as effective solutions tailored to your specific spa’s needs. Attempting complex repairs without the necessary expertise may lead to further damage or even void warranties, making it crucial to rely on professionals for such situations.

Remember that professional help is always available should you encounter persistent issues with blocked spa jets. By reaching out to a qualified technician, you can ensure proper diagnosis and resolution of any underlying problems while maintaining the optimal performance of your spa system.

Frequently Asked Questions

FAQ 1: How often should I bleed the pump to prevent air locks?

To prevent air locks in your spa, it is recommended to bleed the pump whenever you refill or top up your tub. This ensures that any trapped air bubbles are released from the plumbing lines and helps maintain proper water flow through the jets.

FAQ 2: Can I use any screwdriver to open the bleed valve?

It is important to use a suitable tool when opening the bleed valve on your spa’s pump. Most pumps have specific instructions regarding which type of screwdriver should be used for this purpose. Using an incorrect tool may damage or strip the valve, leading to further issues with jet functionality.

FAQ 3: What should I do if the jets are still not working after trying all methods?

If none of the methods mentioned in the previous sections work and the jets are still not working, it is recommended to check for other issues such as clogs, leaks, or low water levels. Cleaning the filter of any debris or ensuring the tub is filled to the appropriate water level may help restore jet functionality. If all else fails, it may be necessary to seek professional help.


  1. https://www.seawaypoolsntubs.com/blog/signs-of-a-hot-tub-air-lock-how-to-fix-it/
  2. https://www.troublefreepool.com/threads/no-more-bubbles-out-of-the-spa-jets.37873/
  3. https://www.houzz.com/discussions/2562106/spa-jets-blocked