What is a spa jet and what does it do? (Everything you need to know)

Explore the wonders of spa jets and learn everything you need to know about them. Discover how they work, the different types available, and their benefits for your hot tub experience. Read on to find out more.

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There’s no doubt that hot tubs are great additions to any household, whether you’re looking to improve wellness or want a private space in your backyard to relax and reconnect with your loved ones.

One of the key benefits of a spa pool is hydrotherapy which is generated in most spa pools and hot tubs through the use of jets. Spa jets are used to target specific body parts or muscles to relieve aches or inflammation.

In this artcle, you'll learn:

Hydroflow stainless steel jets (Avanté)

What is a spa jet?

Spa jets generate air and water to increase the buoyancy of the water and target certain body parts where pain and stiffness are common, like the neck, shoulder, back, and calves.

The key role of spa jets is to provide hydrotherapy and lessen discomfort from joint pain, arthritis, injuries, and help with recovery after exercise. Without the spa jets working properly, your spa becomes more like just a big bathtub with no water movement.

What is a swim spa jet?

Swim spa jets are powerful jet systems built-in to swim spas which are equipped with pumps that push the water in large volumes that create continuous water resistance you can swim against. Swim spa jets allow you to swim steadily and in a fixed position without reaching the end of the swim spa.

Swim spas usually have one to four swim jets and swim pumps that are adjustable to match your swimming capabilities. If you are an advanced swimmer, you’ll probably need at least four swim jets each with a dedicated pump to achieve the water resistance required for your fitness level.

Swim spa jets are not only used for swimming. By controlling the number of jets and pumps running, you may enjoy low-impact exercises like water walking and jogging.

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What is a jet body?

The main responsibility of the jet body is to seal the outside of the spa jet and prevent any leak to the underside of the spa. The jet face is connected to the jet body which is attached to the plumbing fittings, and sometimes lighting.

Most spas manufactured recently use spa jets that can be accessed from the front. While most older manufactured spas (three years older or more) may have spa jets that need to be accessed from the back and are more difficult to access for replacement and cleaning.

Refer to your owner's manual to determine whether your jets can be accessed from the front or back.

Are spa jets universal?

Some spas use universal spa jets. This means that you can use different types of jets as long as they use the same size. Depending on the brand of your spa, spa jets can also be interchangeable.

For example, if a specific jet is positioned to the back of your leg to massage your calves, but you prefer to use it for your back, you can simply twist the face jets for the jet to pop out and interchange them as long as they have the same size.

The great advantage of spas using interchangeable or universal jets is that you can personalise your massage options and target any part of your body.

Some spa brands manufacture proprietary spa jets. This means that if your spa jet wears out or breaks you will need to get a replacement jet from the retailer or manufacturer directly.

Can the Jets in a Jacuzzi® tub be replaced?

Like most spa brands, replacing jets in a Jacuzzi® spa pool is simple. The good thing about replacing jets in a Jacuzzi® spa is that you don’t need to drain your spa pool. Let’s look at this quick guide on how you remove and attach a jet to a Jacuzzi® tub.

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How to remove a jet?

  • Step 1: Gently twist the jet face counterclockwise until it gets to the "off" position.
  • Step 2: Continue to twist the jet counterclockwise. Once you hear the jet click, you may now pull the jet from the socket.

How to attach a jet?

  • Step 1: Insert the jet into the socket.
  • Step 2: Apply a little pressure and turn the jet clockwise.
  • Step 3: The jet locks in the socket once you hear the jet click.

How to remove the jet if I can’t get a grip on it?

Getting a grip on smaller jets might be harder due to their size. Using channel locks, vice grips or similar tools to remove or replace the jet could help.

How to remove a jet with channel locks?

  • Step 1: Gently twist the jet face counterclockwise until it gets to the "off" position.
  • Step 2: Using a pair of channel locks, carefully turn the face jet counterclockwise.

Note: Please do not squeeze the face plate too hard as it may bend or crush. To protect the faceplate from being damaged as you use channel locks to remove it, you can put a cloth or paper towel around it.

Step 3: Once the face jet unlocks, simply pull it out.

How much does it cost to replace my spa jets?

Over time, your spa jets wear out. Getting them replaced as soon as possible can prevent further damage to your spa and allow a more enjoyable soak. The costs to replace spa pool jets depend on the type and quality of the jet you are replacing.

As a broad guideline, spa jets range from $25 to $50 and $80-$100 for swim jets. If your jet body needs replacing this can cost an additional $30-$50. If you decide you need a technician to help with the replacement, they generally charge between $100-$120 per hour.

Your spa or hot tub may have four to six types of spa jets. For example, mid-market to premium spa pools like Vortex Spas™ has six different types of spa jets.

  • Rotational/ RotaryJets - This type of jet moves the water in a circular motion and is usually installed in lounge seats targeting the neck and back.
  • Directional Jets - Directional jets can be adjusted to direct the water flow and target specific body parts. Directional jets are typically found in most spa pools.
  • Volcano Jets - Volcano jets are one of the unique features of Vortex Spas™. These spa jets release powerful streams of water great for deep tissue massage on the hamstrings, glutes, pecs, and lower back.
  • Air Jets - This type of spa jet releases warm air and creates bubbles to provide complete and delightful hydromassage.
  • Water Jets - Water jets burst water that massages and releases tension to certain body parts.
  • Laminar Jets - Laminar jets creates a clear glass-like spa water feature that enhances the in-spa experience.
  • Swim Jets - Swim jets are found in swim spas which are responsible for creating a continuous water stream you can swim against.

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How do I measure my spa jets?

Spa jets come in many different types, colours, and sizes, and sometimes look very similar. If your spa jet needs a replacement, it may sometimes be confusing to determine which spa jet fits perfectly with your spa.

The best way to determine which spa jet you need is by measuring the face jet. Here’s a guide on how to measure the jet face.

Step 1: Remove the spa jet - Most spa jets can be removed by turning the face jet or nozzle counterclockwise or by pulling the face jet. So, before removing the jets, please check the manufacturer’s instructions to make sure you won’t damage the jets.

Step 2: Measure the jet - Measure across the front of the jet facefrom one side to another using a tape measure.

Step 3: Take note of your spa jet’s dimensions.

Step 4: Take a photo for clarity. If you’re ordering a replacement jet, most spa stores require a photo of the jet face including its back part to ensure you get the correct fitting.

Watch: How to measure spa jets

Should I leave my spa or hot tub jets on all the time?

You may be wondering how long you need to keep your spa jet running or if you need to leave them on all the time.

The answer to this question greatly depends on the manufacturer’s pump running specifications. The spa jets, filter, and pump work together to distribute the water throughout the spa and keep the water clean and warm.

Keeping the pump running according to your manufacturer’s specifications enables sufficient water movement and prevents the water from being stagnant where harmful bacteria are likely to develop.

Another key benefit of allowing the pump to run makes your spa ready for use any time you feel like soaking. You no longer need to wait for the spa water to heat up as the pump keeps a specific water temperature according to your pump settings applied.

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How do I seal the jets in my spa pool or hot tub?

If you find leaks around the jets, sealing them might fix the issue.

  • Step 1: Partially drain to lower your water level - If only the jets need fixing, you don’t have to drain the spa completely. Just drain enough water to easily access the jet.
  • Step 2: Remove the jet- Depending on your spa or hot tub model, the steps for removing the jet vary. Please refer to your owner’s manual for reference.
  • Step 3: Locate the cause of the leak - Closely inspect the entire jet from the nozzle or jet face through its walls. If you don’t find any cracks, the rubber gasket also known as O-right might be what’s causing the leak. This rubber gasket hardens or deteriorates over time, if this is the case, replacing it with a new one is needed.
  • Step 4: Repair the cracks- If you find any cracks in the jet housing, you may use sealant products like silicone, epoxy, or a quick-set putty and allow it to dry thoroughly. Please follow the application directions on the packaging.
  • Step 5: Put the repaired jet back in place - Once the sealant is all dried up, place the jet back into the socket.
  • Step 6: Inspect the repair - Fill and run the spa as you typically would. Inspect the repaired jet and look for any signs of leaks. If the jet is still leaking, we highly recommend having a technician evaluate and fix the issue for you.

Do jets make a spa pool or hot tub hotter?

In order for the water to heat up, you don't need to turn on the jets. However, keeping the jets running makes the water heat up faster and reach the set point. There are two reasons why the water in your spa will heat up more quickly when the jets are on.

  • The jets circulate heated water in the spa and eliminate cold pockets in the corners of your spa.
  • When water is forced through pipes at high speeds, the friction causes the water to heat up and clear out any cold air bubbles.

Tip: You can leave the spa cover on to help the water heat up more quickly. Not only does a spa cover help the water heat up faster, but it also reduces heat loss.

Where to buy spa jets?

Should your spa jets require replacement or need an upgrade, you can shop for spa jets online.

Spa World is one of the most trusted spa stores you can trust. We offer our customers an excellent selection of premium spa chemicals, spa filters, spa covers, accessories and spa parts.

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Why shop at Spa World?

  • Quality and affordable spa parts to suit all brands of spa pool
  • Honest and trustworthy salespeople
  • Strong warranties
  • Fast and free shipping
  • 7-day online chat support

Spa World also stocks parts for all popular spa brands including Vortex® Spas, O2® spas, Arcadia® Spas, Fisher® Spas, HotSpring® Spas and parts for almost every other major brand of spa pools, spa baths, swim spas and hot tubs in Australia including Endless® Spas, Signature® Spas and Maax® spas to name only a few.

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In Summary

In this article, we explained the different types of spa jets and the different components that make up a jet assembly. We also talked about the importance of cleaning and maintaining your jets to ensure you get the most enjoyable massage experience in your spa or swim spa.

We also answered some common questions about spa jets including how to remove, clean and replace them.

Got more questions?

Talk to us on live chat, or email us your spa questions and we'll be happy to help!

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