Spa jets are nozzles that mix pressurised water and air to deliver a targeted massage, helping create a more relaxing and therapeutic spa session.
However, more jets don’t necessarily mean a better massage. The type of jet, where it is positioned, and the power behind it all are the combined factors on how the massage feels and which areas of your body it reaches.
How Do Spa Jets Work?
A spa’s jets are part of a circulation system that moves, heats, and pushes water around the spa throughout different components:
- Pump: Moves water through the system and creates the pressure needed to power the jets.
- Filter: Removes dirt, oils, and other particles from the water to help keep it clean.
- Heater: Warms the water to your chosen temperature before it returns to the spa.
- Jet loop: Sends the heated, filtered water back through the jets, where it is directed into the spa.
Pressurised water is then combined with air to create massage streams. Different jets control the stream in different ways, producing sensations that can range from a gentle flow to a stronger massage that are central to hydrotherapy.
With the combination of warm water, movement, and targeted pressure working together, it’s no wonder that spa hydrotherapy is so popular.
Main Types of Spa Jets
Spa jets come in a variety of types, each designed to provide different massage styles that can be used for hydrotherapy for injury recovery:
- Directional jets
A fixed or adjustable nozzle delivers a concentrated stream of water to a specific area. They’re useful for targeting areas such as the lower back or shoulders where you want more focused pressure.
- Rotary (rotational) jets
These jets spin the water in a circular motion, creating a broader, kneading-style massage. They’re commonly positioned around lounge seats to work across areas such as the neck and back.
- Cluster and multi-massage jets
These jets use multiple smaller streams to spread the water across a wider area. The result is generally a lighter, more distributed massage sensation rather than one concentrated point of pressure.
- Footwell and specialty jets
Designed to target the feet, ankles and calves, these jets can add another layer to the massage experience. Their placement helps deliver focused water flow to areas that can be difficult to reach with standard jets.
|
Jet Type |
Motion |
Best for |
| Directional | Focused, straight stream | Lower back, shoulders and specific tight areas |
| Rotary | Circular, rotating flow | Neck, back and broader kneading massage |
| Cluster/multi-massage | Multiple smaller streams | Lighter, wider coverage |
| Footwell/specialty | Targeted flow, depending on design | Feet, ankles, and calves |
Spa Jets for the Body: The Hydrotherapy Benefits
Spa jets’ warm water and massage streams may provide several hydrotherapy benefits, such as:
- Supports circulation: Warm water may increase blood flow to the skin and muscles, while the pressure of the water may add to that soothing sensation.
- Ease muscle tension: Warm-water immersion can help muscles relax, while targeted jets provide a gentle massaging sensation that may ease feelings of tightness.
- Support recovery: Time in warm water can help you feel less stiff and support relaxation after physical activity, as well as easing chronic pain and arthritis.
- Promotes relaxation: Warm water and rhythmic jet action can create a calming experience, helping you take a break from the day.
However, keep in mind that spa hydrotherapy only helps relaxation and tension relief, and is not a substitute for medical treatment. If you have any health concerns, please seek advice from a healthcare professional.
How Many Jets Does a Spa Actually Need?
More jets aren’t always better. In fact, when comparing spas, look beyond the jet count and consider the key factors: pump and jet configuration.
What matters is how well the jets are matched to the pump, with roughly 20–30 jets per pump serving as a rule of thumb. Jet size, type, and plumbing also affect how much pressure each jet can deliver.
For example, a spa with 100 jets and one underpowered pump may produce a weaker massage than a well-designed 30-jet spa with a properly matched pump.
For your information, many portable spas sit somewhere around 30–60 jets, although the number clearly varies considerably between models.
Jet Placement & Seat Configuration
Aside from the jet count, its placement as well as the seating configuration are also important factors to fully relish a spa’s hydrotherapy benefits.
For the jet position, it should line up with the areas you actually want to massage, such as the shoulders, back, or calves and feet, rather than simply being spread around the shell.
Mind you that a well-crafted portable spa can provide more useful coverage with fewer, well-positioned jets than one with a higher count but poor alignment.
Then, seat design matters as well. Lounge seats can provide extensive coverage from your back to your legs, but they also tend to use more pump capacity because more jets operate at once.
If you plan to share the spa, consider a layout that gives each seat useful jet coverage rather than choosing a single lounge seat for maximum coverage.
Which Spa Jet Setup is Right for You?
The best jet configuration depends on how you plan to use the spa pool. Think about the type of massage you prefer and who will use the spa most often.
- For deeper recovery: Look for a lounge seat with directional and rotary jets. This combination can provide both focused pressure and broader, moving massage across the back and legs.
- For gentle relaxation: Cluster and multi-massage jets provide wider, softer coverage. They’re a good choice if your priority is a soothing massage rather than stronger, targeted pressure.
- For family use: A mix of jet types across multiple seats gives everyone more choice. This can be particularly useful when different people prefer different massage strengths and sensations.
It’s also worth looking at how a spa is designed for the Australian market. Cyclone and Leisurerite models are two of the standout options, combining thoughtfully engineered jet configurations to deliver customisable massage experiences with high-quality Australian manufacturing.
If you’re unsure about choosing the right Cyclone spa, feel free to explore our range of spas or take a wet test at one of Just Spas’ showrooms so you can experience the different jet configurations and models before buying the one that suits your preference.
Looking After Your Spa Jets
It’s obvious that spa jets work best when the water is clean and flowing smoothly. These are three simple checks that you can do to maintain the jets’ quality:
- Run the jets regularly: Moving the water helps circulate chemicals and reduces stagnant areas within the spa. Follow your spa’s operating instructions for recommended circulation and filtration times.
- Keep water chemistry balanced: Test the water regularly and maintain the recommended pH and sanitiser levels.
- Check for weak or blocked jets: If one jet suddenly has less flow than usual, check for debris or buildup around the opening. Persistent low flow may indicate an issue elsewhere in the system and should be checked according to the instructions.
For more on keeping the system running smoothly, see our guide to spa pump maintenance.
Remember, more jets aren’t always better. In fact, jet count isn’t necessarily even the primary factor.
The type, placement, and configuration of the spa jets, along with the pump’s power, have a greater impact on your hydrotherapy experience. The right combination should suit how you plan to use the spa and will determine how you can reap the wider benefits of owning a spa.
The best way to judge spa jets is to feel them. Book a wet test at your nearest Just Spas showroom and try our Cyclone and Leisurerite range in person.
Frequently Asked Questions
How do spa jets work?
Spa jets work by drawing water through a pump, warming it, then forcing it back out through nozzles that mix it with air. This pressurised water-and-air stream creates the massage effect. Different nozzles shape the flow into a targeted, circular or wide massage.
What are the different types of spa jets?
Directional Jets- these are a focused jet stream designed to target particular “knots” on the body. Rotary Jets- these use a circular motion to provide a general area massaging such as the upper back. Cluster/ Multi-Massage Jets – these jets feature multiple small streams of water. Footwell Jets- are used at the bottom of a spa to give the feet, ankles & calves a massage.
Most spas will include at least two of these types.
How many jets should a spa have?
There really isn’t an exact answer to this question. The most important factor is that the pumps supplying the jets have enough pressure to run them all. In most cases, there’s a rough guideline of about 20-30 jets per pump. However, it is equally important to place those jets effectively in order to get a good massage from your spa. Generally speaking, a spa with fewer jets that are well matched tend to be more effective than a spa with lots of jets but little pump power.
Do more jets mean a better spa?
No, generally speaking. While a lot of jets may look nice, they can dilute the effectiveness of the pump and cause the massage experience to be weaker. The number of jets is less important than their type, where they’re located and how much pump power they receive. When possible, try out a spa before buying.
Are spa jets good for muscle recovery?
Warm water combined with jet massage can support recovery by easing muscle tension, aiding relaxation and helping circulation. It is a helpful complement to rest and gentle movement rather than a medical treatment. If you have any health conditions or have questions always speak to your doctor first.
