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À quoi servent les jets d’un spa ?

What are the jets in a spa for?

When you discover a spa, you quickly notice that not all jets are the same.

Some are small, others much wider. Some produce a direct stream of water, while others create a rotating movement. Their position also varies depending on the seat: back, shoulders, lower back, legs, calves or feet.

And this is obviously not by chance.

As we often explain at Provence Spa, a good hydromassage is not about installing as many jets as possible.

It's about choosing the right jet and placing it in the right spot.

This is precisely one of the principles found in the design of Aquavia Spa hot tubs.


Not all spa jets massage in the same way

We often talk about the "number of jets" as if they were all identical.

However, two jets can produce completely different sensations.

The result depends notably on:

  • their diameter;
  • their shape;
  • water flow;
  • the mixture of water and air;
  • their movement;
  • their orientation;
  • and especially their position relative to the body.

A small, targeted jet therefore does not have the same function as a wide jet intended to cover a larger area.

This is what allows different massages to be created within the same spa.


Fixed jets: a precise massage

Fixed jets direct the flow to a specific area.

They provide a relatively precise action and are particularly effective when correctly positioned in relation to the body.

They can thus be found at the back, lower back, or on different parts of the legs depending on the seat design.

And this is where ergonomics becomes essential.

A powerful, poorly placed jet will remain a poorly placed jet.

The shape of the seat and the position of the body must therefore be considered simultaneously with the hydromassage.


Rotary jets: a more enveloping sensation

Some jets produce a rotating movement rather than a flow constantly directed towards the same point.

The sensation then becomes different.

The movement of the water allows it to sweep a wider area and provides a more mobile massage.

Depending on the seats and Aquavia Spa models, different types of jets can thus be combined to ensure that not all areas of the body receive exactly the same stimulation.

It is precisely this combination that makes a hydromassage seat interesting.


Large jets: covering a larger area

The size of a jet is also important.

A large diameter jet can move more water and create a much broader sensation than a multitude of very small nozzles.

This is a particularly important concept when comparing two spas.

Seeing ten small nozzles on one seat and only four larger jets on another does not at all mean that the first one massages better.

These are two different designs.

And it is precisely for this reason that the simple number of jets indicated on a technical sheet should be put into perspective.


Neck massage

The neck and upper shoulders are areas where jet placement requires particular attention.

Their location must take into account the position of the head and upper body in the seat.

On some Aquavia Spa seats, the hydromassage is specifically designed to work more on the upper back and neck area.

But again, the user's body shape matters.

A person 1.60 m tall and another 1.90 m tall obviously do not position themselves in exactly the same way in a seat.

This is also why the variety of seats in a spa is interesting.


Lumbar jets

The lumbar area is particularly popular for hydromassage.

The jets are then positioned in the lower part of the backrest to provide a targeted massage sensation when the user is correctly seated.

Depending on the type of jet used, the sensation can be more precise or broader.

At Provence Spa, this is typically the kind of detail we prefer to look at rather than simply stating:

"This spa has 50 jets."

The real question is:

where are these jets and what will they massage?


Legs and calves

Legs are sometimes overlooked when quickly browsing a spa on display.

However, some seats also offer jets directed towards the thighs, legs or calves.

They can be particularly pleasant after a day spent standing or after physical activity.

We have also dedicated a full article on the Provence Spa blog to using a spa after exercise.

A well-designed seat thus allows for varying the areas targeted during the same session.


Foot massage

Aquavia Spa also places particular importance on foot hydromassage in certain models.

Jets can be installed at the bottom of the spa or in specifically designed areas to enjoy the massage while seated.

And again, a few correctly positioned jets can provide more benefit than a multitude of small nozzles distributed without any real logic.

Feet don't need twenty jets to realize they're in a spa. 😄


What about air bubbles?

Not everything you feel in a spa necessarily comes from the same systems.

Aquavia Spa notably offers its Relax Impact System, which uses air to create a different effect from traditional hydromassage jets.

This creates a multitude of bubbles that produce a softer, more enveloping sensation.

The objective is not the same as with a powerful, targeted water jet.

It is more about a global relaxation experience.

And that's precisely what's interesting: a spa can offer several complementary sensations without trying to turn every square centimeter of the tub into a water outlet.


Why do some seats have more jets than others?

Simply because they don't have the same function.

In an Aquavia spa, one seat may be more focused on the upper back, while another works the lower back or legs differently.

A reclined seat also does not position the body in the same way as an upright seat.

The number and arrangement of jets are therefore adapted to the geometry and function of each seat.

This is why it can be very pleasant to change seats during a session.

Each seat allows you to discover a different sensation.


Can the power of the jets be adjusted?

Depending on the models and equipment, various settings allow for adjusting the hydromassage sensations.

And this is important.

Not everyone appreciates the same intensity.

Some people seek a dynamic massage, while others prefer something much gentler.

The goal is therefore not simply to have maximum power constantly.

A good hydromassage should remain comfortable.


Pump power matters… but not alone

One might then think that it is sufficient to choose the most powerful pump possible.

Again, that would be too simple.

The quality of the massage depends on the entire circuit:

pumps, flow rate, piping, hydraulic distribution, type of jets, and number of outlets supplied simultaneously.

A powerful pump supplying a large number of small nozzles will not necessarily provide the same sensation as a design using fewer jets with a different flow distribution.

It is therefore necessary to look at the entire system, not just a single technical value.


Why doesn't Aquavia Spa use the same number of jets on all its models?

One only needs to observe the Aquavia Spa range to see that the number of jets can vary greatly from one model to another.

And this is perfectly logical.

Dimensions change.

The number of seats changes.

Their ergonomics change.

The desired type of use also changes.

A compact spa intended for a few people has no reason to be designed exactly like a large family model.

The goal is therefore not to systematically achieve the highest number.

The number of jets must correspond to the spa's design.


Does more jets mean a better massage?

We dedicated an entire article to this question on the Provence Spa blog:

More jets = better spa?

And the answer is no.

The number of jets is obviously a characteristic of the spa, but it alone cannot determine the quality of the hydromassage.

As we like to say at Provence Spa:

a spa is not a collection of showerheads.

Multiplying water outlets is only useful if each one genuinely contributes to the experience.

Your body doesn't count the jets.

It feels their position, their flow, and the type of massage they provide.


How to compare the jets of two spas?

When comparing two models, don't just look at the number in the catalog.

Look at the seats.

Try to understand the body's position.

Observe where the jets are.

Are they all identical?

Are there different sizes?

Do some seats work the legs, lower back, or shoulders more?

Are there different types of massage?

These are much more interesting questions than:

"How many are there?"


Our Provence Spa advice

At Provence Spa, we prefer to explain the role of the jets rather than impress you with their quantity.

When we present an Aquavia Spa, we look at the design of each seat and the sensations it can provide.

Because two customers can be looking for very different things.

One will particularly appreciate a back massage.

Another will place more importance on the legs.

A third will prefer a soft and enveloping sensation.

This is precisely why there are different jets and different seat configurations.

The best hydromassage is not the one with the most spectacular number on its technical sheet.

It's the one that matches your body and your preferences.


In summary

Not all jets in a spa are identical.

Fixed jets, rotary jets, small or large diameters, neck, lumbar, leg or foot massage: each configuration produces different sensations.

Aquavia Spa uses this diversity to design hydromassage seats with complementary functions.

That's why you should never judge a spa solely by its number of jets.

Look at their shape.

Look at their location.

Look at the seat design.

And most importantly, remember one thing:

a good hydromassage is not about putting jets everywhere, but about putting the right jets in the right places.

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