Jet Problems? Try These Simple Fixes Before You Call for Service
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There’s nothing like the powerful, massaging action of hot tub jets to melt away stress. So when you get in and find the jets are weak—or not working at all—it can be a major disappointment.
Before you panic and assume a costly repair is needed, the good news is that most common jet problems have surprisingly simple solutions. By running through this quick diagnostic checklist, you can often solve the issue yourself in just a few minutes.
1. Are the Jets Actually Open?
This might seem obvious, but it’s the most common culprit! Many hot tub jets can be turned on and off individually by twisting the jet face. If only some of your jets are working, try this first:
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Turn the outer ring of a non-working jet counter-clockwise. You should feel it open up.
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If multiple jets in one area are off, you may have a diverter valve that is partially closed.
What's a Diverter Valve? These are the larger dials or handles on the top of your spa shell. They control the flow of water, sending it from one group of seats to another. Try turning the diverter valve in the area of the non-working jets. You should feel the water pressure redirect and the jets spring back to life.
2. Is the Water Level Too Low?
Your hot tub pumps need enough water to function properly. If the water level drops below the filter intake or skimmer line, the pumps can start to suck in air instead of water. This creates an "air lock," which can drastically reduce or completely stop your jet action.
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Check your water level. It should always be at least an inch or two above the highest jets or skimmer opening.
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If it's low, top it up with your garden hose.
3. Do You Have an Air Lock?
If your water level was low or you just refilled your spa, you might have an air lock. This is when a pocket of air gets trapped in the plumbing, preventing water from flowing through the pump.
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How to fix it: Try turning your jets on and off a few times in quick succession (e.g., press the "Jets" button, wait 5 seconds, turn it off, wait 5 seconds, and repeat 3-4 times). This can often be enough to "burp" the air pocket out.
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If that doesn't work, you can try slightly loosening a union on the pump to release the trapped air (you'll hear a hissing sound), but this is a more advanced step.
4. Is the Filter Dirty?
A clogged filter is another primary cause of weak jet pressure. If the filter is packed with debris, the pump has to work much harder to pull water through it, leaving less power to push water out of the jets.
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Turn off the power to your spa at the breaker.
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Remove and inspect your filter.
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Give it a thorough rinse. If it’s been a while, perform a deep chemical clean. If it looks worn out, replace it.
When to Call the Pros at Wave-Tech
If you’ve tried all the steps above and are still having issues, it could be a sign of a more serious problem, like a failing pump or a clog deep in the plumbing. That's when it's time to call in a professional.
Don't let jet problems keep you from enjoying your spa. Our technicians are experts at diagnosing and repairing all hot tub issues, big and small. And with our Tidal and Tsunami packages, we perform regular jet function tests to catch potential problems before they start.