Why Are My Hot Tub Jets Pulsating?(How to Fix)

Can I Drain My Hot Tub on My grass?

Why Are My Hot Tub Jets Pulsating?

Your hot tub jets are not pulsating because they boast clogging. Often, a clogged jet is easy to fix by cleaning it.

But if your hot tub jets are pulsating, as in they’re going up and down at a rapid pace, then you need to look elsewhere for the cause of this issue.

You might have algae nutrients build up or have an air bubble trapped between the jets. For example, if you do not have a filter or canister on your tub, those built-up algae nutrients will often coat the jets’ surfaces and create an air release during use.

If you run the jets for an extended period, this is an excellent way to create an air bubble in the jet. This air bubble will cause the pulsating jet action because it pushes and releases the bubbles elsewhere in the hot tub water.

The best possible fix for algae buildup is to get your hot tub chemicals and clean or replace those jets. If you have a filter or canister, clean it or replace it.

Air bubbles are less likely to form during use. If you have an air bubble, drain your hot tub and start anew.

Another cause for pulsating jets is if you have a pump that has air in its lines. If you can access the hose that connects the pump to the hot tub, turn the pump on and listen for the release of any air bubbles.

If air bubbles are released when the pump runs, you can get a new flow control valve for your hot tub. If you do not hear these air bubbles but see the water pulsating, it’s likely because of the jet’s buildup or an air bubble.

If neither of these fixes your jets, you’ll have to get a professional to clean your hot tub jets.

Do Hot Tub Jets Wear Out?

You can design Hot tub jets to cover a wide range of water usage and flow rates, performing well in up to one thousand gallons per minute. You can find the jets in indoor and outdoor Spas and residential swimming pools.

The jet’s durable construction is suitable for a long-lasting performance that you can rely upon daily.

Yes, Although the tub is long-lasting, it has some components, such as the jets that wear out with time and need replacement.

You can locate the hot tub jets at the bottom of the Jacuzzi, and they are what create the powerful jets that massage you while you relax in your Spa. They usually consist of a shaft and an impeller, which spins to create a jet stream.

Why Are My Hot Tub Jets Pulsating?

These jets wear out with time because they constantly need to be spun around to function correctly. The spinning creates friction, and if not changed regularly, this can cause them to wear out faster than usual.

You can lengthen the life of your hot tub jets by performing regular maintenance. You can do it yourself and save some money or call a professional.

These jets are not expensive, but if you purchase new ones, your main goal should be to find one that fits perfectly with your Jacuzzi.

It’s possible to download instructional manuals from the manufacturer’s website or an ordinary search engine.

Also, they are available in most stores that sell hot tubs or Spas. But you should ensure you get the right one for your type of hot tub.

If you do not want to perform any maintenance on your hot tub jets, there are some other things you can do to prolong their life.

When you finish with your tub and before you drain the water from it, cover the jets with plastic caps if they do not already have a protective cap on them.Some hot tubs come out of the box with them already attached to the jets.

Why Are The Jets In Hot Tub Weak?

Air leaks and drain cover clogging are common causes of weak jets. Air leaks allow air bubbles into your water jet systems, decreasing the jet pressure; the result is weak jets.

When a jet becomes too weak, the bubbles cease to be forceful enough to clean the dirt off your skin or even move you around in the tub.

To increase your jet’s power, turn off the hot tub jets for about an hour. This will allow any remaining bubbles to escape the water jets.

Drain cover clogging is yet another cause of weak jets. If you do not regularly clean out drain covers, a lot of dirt, hair, and other items can get trapped inside.

These then block your hot tub jets from producing enough power to push you around in the tub. Using a filter brush will help keep them unclogged and increase the power of your water jets.

Low Water Levels

Low water levels occur when you run out of hot tub water. This causes your hot tub pump to produce too little power to keep your jets working correctly.

Dirty Filters

Filters trap particles that could clog your drain covers. If they are dirty, they will also reduce the strength of your hot tub jets.

To restore full power to your hot tub jets, you need to clean your filters, including the drain covers, or replace them with new ones.

How To Make Spa Jets Stronger?

First, close your Waterfall by turning the Waterfall Control Valve off. This will increase the flow of water that comes out of your jets. To increase the flow of water, turn the Flow Control Valve to the full water position.

If your jets are not strong enough, pump pressure is low, or you have difficulty getting enough water to circulate your body, consider installing stronger Spa jets by replacing them with stronger jets.

Install and set up a new Jet Pack Assembly. This consists of a pump that sends high-pressure hot or cold water through an inlet hose that attaches to backflow preventers on your existing Jets.

You can also install a combination of the new Jet Pack Assembly and new Jets. You can install additional Jets to increase water flow in two or more Spas by connecting them with a hot-water bleeder hose.

Bleeders are small hose fittings that allow you to control water flow between two Spa jets. Use a bleeder if you need more water circulation between your body and other Spa jets.

It might be tempting to install higher output pumps to increase water flow through your Spa. I do not recommend this.

Pumps rated for your hotel should run the jets at a comfortable speed and ensure that you set the jets correctly to massage your back, shoulders, and calves properly.

If you use a pump that runs faster than its highest capacity, Spa components such as heaters and pools will also run too fast. This can cause chemical overdose at low temperatures or overheating at high temperatures.

If your jet pack assembly is not strong enough, consider installing a replacement Jet Pack Assembly.

How To Burp In A Hot Tub?

First, figure out the type of system you have. Be it an under-the-ground or mounting system, and each has its options and methods.

If you have a sealed system, you can manually flush the water from the filtration system by opening a valve that releases the water into an outside drain.

Next, open any valves for the water supply you can locate in the room. These are typically in or near where your hot tub jets are. Then, shut off any other valves (e.g., power to your filter from electric breakers).

If a drain is not in the provision, consider locating it in a readily accessible location within 5 feet of your hot tub. This removes the risk of flooding the house.

If your hot tub is draining, you can use a water hose to remove all remaining water. If you did not drain it, you would need to use a bucket or something similar to safely collect all the remaining water from the tub (and drains) after draining them.

If a hose is unavailable, you can use a bucket if the tub is under water. If the tub is dry, consider using towels or blankets to collect all remaining water.

Next, You must cool the hot tub from 100 to 85 degrees F. How you do this depends on your system (underground, mounted, or sealed).

Underground systems are accessible. Just leave the lid open and run your pump throughout the night. The water will cool on its own because you allow cold air to circulate.

If you have a mounting system, consider hooking up an external cooler to help speed up the process of getting it below 85 degrees F.

Do this by running a hose from your hot tub to your refrigerator or a cooler that contains ice water (and ordinary tap water).

Are Hot Tub Jets Air Or Water?

Hot tub jets are air, not water. It’s just that they don’t need much water to work. You can have 20 gallons or more of water on top of the jet, and it will make a roiling movement at the bottom that looks like water but is just air bubbles created at the surface level.

To get the jets working, you turn them on, and they will be swirling in the water above them, but the water in the tub will be relatively still.

That’s why you sometimes hear people saying “bathtub water” when they mean “hot tub water.”

A hot tub is a massive air container, and the atmosphere is not like water. That’s why the jets don’t work, but at the same time, they look so much like water.

Why Are My Hot Tub Jets Pulsating?

Many people add bubbles when in a hot tub; You can see it if you’re looking for it. You can’t see this as an air inside a high-walled container.

Someone else has to put air into the mix, and then there will be some activity at the bottom of the tub if enough bubbles are there.

This is evidence that the energy from the jets is not coming from bubbling water because if it were, there would be many more bubbles.

It’s also possible to draw a diagram of what’s going on and verify that the water level does not affect whether the jets work.

Just put a few dots above and below where a jet emerges from the wall, add lines connecting them, and then mark an “X” at mid-level in the water. This is a diagram of what’s going on. You can divide the drawing into four sections.

One shows the jet emerging from the wall and moving down. 2 shows the water above and below that jet, 3 shows air under that jet, and 4 shows air above that jet (where bubbles might be coming from but are not).

If no bubbles are coming out of the jets, then you see all the water is being affected by the force of the jets and will move up or down to be in equilibrium with it.

Why Won’t My Jacuzzi Jets Stay On?

Your jacuzzi jets won’t stay on because it boasts clogging devices upstream of the jets that are constantly sucking up the water. When you turn off the jets, they’re either clogged or running out of pressure, and other devices downstream are still sucking up water.

To fix this problem, you need to unclog your Jacuzzi or replace your plumbing fixtures.

You can also try providing more raw water pressure to your Jacuzzi by adding a booster pump or installing a better-quality pump if your old one is on its last legs.

Lastly, You may have an air bubble trapped in one of your jets, propelling the water upward.

You can try pouring 2 to 4 cups of white vinegar into your Jacuzzi or pouring a cup of water into one or two jets and leaving them running for as long as possible.

As soon as the bubbles dissipate, turn off the water, and voila, your jets will run again.

A bad jet can cause many issues and, in some cases, kill your fish. If you’re unwilling to make any more repairs, you may want to call a professional plumber.

Are Spa Jets Adjustable?

No, Spa jets do not boast adjustability, meaning there is no way of changing the jet’s water pressure. If a Spa jet does not work correctly, you should immediately contact your service provider and have the jet repaired or replaced.

It’s essential to remember never to touch a Spa jet while the Spa is running. Since the water pressure is usually thousands of pounds per square inch, it can cause damage to your skin and even result in severe injury or death.

The body of a Spa jet is called the “jet plate.” It uses Cast iron, steel, or aluminum to make it. The jet plate has holes, and the water moves through them, causing the jets to emerge from the plate.

The water pressure pushes against the jet plate and forces it upward, creating hot water.

Each Spa manufacturer has a different method of forming and shaping their jets. Each Spa’s type of heating element also differs depending on brand and model.

Whether or not a Spa is fully adjustable depends on the manufacturers’ perception of the different types of problems a client might have. For example, most models eliminate many Spa jets.

You must read the appropriate owner’s manual for your home Spa before attempting any repairs.

What Are The Knobs On A Hot Tub?

The knobs on a hot tub are the air control valves. They prevent the water from being overfilled or underfilled, allowing you to adjust the settings on the heater.

Sometimes a hot tub will also have knobs for controlling water flow, such as those found on geysers, Spas, and fountains. However, locating these controls in a different room or outside the wet area is not unusual, like in an outdoor Spa or Jacuzzi.

The diameter of a standard 35 mm (1.4 in.) hot tub spool is roughly 5 ft (1.5 m) from the center hole of the spool to the outside edge of the pool cover. The hot tub spool will be 1.25 inches (32 mm) in diameter at the center hole.

The overall length of a standard 35 mm (1.4 in.) hot tub spool is roughly 18 ft (5 m) as measured from the center hole of the spool to the outside edge of the pool cover.

The overall height of a standard 35mm (1.4in.) hot tub spool is roughly 10 ft (3 m).

The approximate weight of a standard 35 mm (1.4 in.) hot tub spool is roughly 100 lbs (45 kg).

Most hot tub and pool companies in North America use the standard size used for installation is 36 inches (1 m) outside diameter with a 1-3/4-inch (44 mm) wall thickness.

The exact same spools are also available in 33 inches (0.8 m), 24 inches (0.6 m), 20 inches (0.5 m), 16 inches (0.5 m), and 12 inches (0.3 m). The smaller spools are usually used on smaller hot tubs.

An extra-large (or XL) hot tub spool may be available in the same size, but those are typically custom-made for a specific tub after the customer orders.

When To Replace Your Spa Jets

You should replace your Spa jets when they start making strange noises or if they are leaking water.

If your jets still have a lot of life, there’s no need to replace them, especially if you recently installed a new Spa and want the new jets to function correctly with the previous Spa setup.

Before starting any project like this, ensure you call an expert and ensure all of your safety measures are in place before working on anything that can potentially harm you or your family.

It’s essential to be consistent while performing maintenance on your hot tub. If you are replacing any parts, it is necessary to write down what you did and follow the exact steps that match up with a specific part.

If you have lost a step, you will likely not get the part to work

Replacing Spa jets is undoubtedly a straightforward task for most people, but if you are still new to making repairs on your hot tub, then learning how to accomplish this is essential.

Not all hot tubs will require different steps when tightening a wand or replacing jets, and specific procedures are necessary for your Spa.

Locate the Spa jets so you know exactly where they connect at the bottom of your hot tub.

How To Replace Spa Jets?

  1. Drain the water from your Spa. It is unsafe to replace the jets while water is still in the tub.
  2. Remove the foam insert, which covers the bottom of the Spa tub.
  3. Use a putty knife to remove the rubber seal between your Spa jets and holders.
  4. Take out the four screws that hold the jets to the Spa holder.
  5. You may need to disconnect your drain hose to remove the jets.
  6. Carefully remove the jets by turning them counterclockwise, and align them with one of the Spas using a screwdriver so that you can use it for leverage. Holding the jets in one place with a primary seal should come out quickly.
  7. To replace the jets, align the screw holes in the Spa holder with the holes in your new jets. Then insert them into the slots and turn clockwise, working your way up to tightness so they won’t budge.
  8. Replace the foam gasket and ensure it’s in place between your Spa jets and their holders before replacing the six screws. If a screw is tight, you can strip its head and not be able to remove it.
  9. Your Spa should now be watertight and ready for use.

How To Remove The Jets From A Jetted Tub?

First, You should see if your jets are back-streaming. If they are, reverse the direction of one jet’s water flow until it no longer backs up into the tub. Next, you can use a plunger to remove debris between the jets.

To remove hard water buildup, pour a cup of vinegar into your jetted tub at least once every three days. Keep the lid closed and rinse the tub with hot water after each use to disinfect it.

If this doesn’t do the trick, continue to inspect your tub for scale or hard water deposits, and vacuum the tub after each use to remove the residues that start to build up around the jets.

If the scale or hard water deposits have gotten out of hand, and you have tried everything, the only thing is to remove the jets. You will need a Phillips head screwdriver and a wrench to do this.

First, turn off your power supply to the tub. Next, remove each jet from its tube. If you need further assistance, look online for directions specific to your brand or model of the tub.

Once you remove the jets, you can use a pumice stone or steel wool to remove the buildup around the tub. Be sure to wipe the area with vinegar for about a month after each use.

Clean your tub regularly by rinsing away excess soap and prolonging your jetted bath experience. If unsatisfied with your jetted bathtub, contact your favorite Spa retailer for professional consultation.

Will Epsom Salt Hurt My Jetted Tub?

No. Epsom salt is a safe and natural bath salt, so you can use it in your jetted tub or shower. It can help relieve muscle aches and pain and soothe skin irritations.

People have used this salt for centuries to dissolve kidney stones and treat various health conditions such as arthritis. There are surprisingly few instances where you would need to worry about the safety of Epsom salt in a jetted tub.

Epsom salt is a soft, white crystalline salt that makes magnesium sulfate. It also contains about 3% sodium chloride and some mica.

You can safely use Epsom salt in your tub because it is not a corrosive material. It does not corrode steel, copper, or aluminum pipes; even if it did, the calcium and magnesium ions in the salt would react with the metal to keep it from rusting.

This reaction allows water to go through jetted tubs without fear of harmful corrosion.

If you have hard water, you may find that your jetted tub doesn’t work as well as it should. That is because hard water contains calcium and magnesium deposits that hinder the performance of the jets and pumps.

You can remedy using a few cups of Epsom salt in the tub. The Epsom salt will dissolve, allowing for better water flow through your pipes.

Removing and Replacing Jacuzzi Jets- Guide

First, choose a Jacuzzi whirlpool tub with an inline valve, which opens and closes from the outside. Next, remove the jets by unscrewing them from the bathtub.

Lifters should come out quickly, and the jet pipe can be easily removed by unscrewing it at the bottom. If you have a jet-on-a-wire, unscrew that and remove it.

Once all of the jets are out, using either a screwdriver or wrench, loosen off the old pump by turning it clockwise, making sure not to cross through any of the teeth. The pump will slide right out.

Next, remove the inline valve by unscrewing it just enough that you can pull it out. It will come out quickly.

Once the parts are removed, and the pump is off, you can clean everything up. Most pumps have a rubber gasket around the outside that protects your tub from rust inside.

After cleaning, mark the top of your pump so it is properly oriented when you reattach. If there is a gasket, place a thin layer of silicone on it now, just enough to protect the pump while still allowing it to move freely.

Then reassemble the pump to the inline valve – using only your fingers, not a tool – with the gasket around the outside edge.

Once you have everything attached, lubricate the parts with silicon grease.

Next, put everything back together by screwing or bolting everything onto the Jacuzzi tub. Generally, start with the pump and inline valve attached and screwed in.

Then attach the jets following their original orientation. Remember to screw them on by hand, not with a tool. They should push into place quickly and be snug on the threaded end of their pipe.

Once you have all the parts back in place, your Jacuzzi tub should work as it did before you had it taken apart.


Hot tub jets are not magic wands. They are highly specialized equipment that requires a great deal of knowledge, skill, and experience to operate safely and effectively.


Hi! I' am Tom. I was a manager in one of the biggest stores for over 10 Years, am also an SEO by night. I don't like to call myself a blogger; they are very analytical, do email marketing, and know all SEO stuff. I faced many questions from customers about different products, and there was hardly any help on the internet. After learning all the things about these products as a manager the hard way, I decided to start a blog and help other people.

Recent Posts