A hot tub filter at All4Spas costs between €24.50 and €67.00 each, depending on the type and size. We stock 18 different filters, suitable for virtually any spa or hot tub. Replace your filter every 2 to 3 months to keep your spa running smoothly.
In this article, we explain how to choose the right filter for your hot tub, when replacement is necessary, and how to extend your filter's lifespan with simple maintenance. All filters are available directly from stock from our warehouse in Uddel.
A hot tub filter is the component that keeps your spa water clear by trapping dirt, oils, and bacteria. At All4Spas, you'll find 18 universal spa filters starting at €24.50 that fit virtually any spa. Replace your filter every 2 to 3 months for optimal water quality. Find the right size by comparing the diameter, length, and connection of your current filter.
Choosing the right jacuzzi filter based on size and connection
Not every spa filter is the same, and ordering the wrong size is the most common problem we encounter with customers. The trick is simple: measure your current filter and compare three things: the diameter, the length, and the connection type. That combination will determine which replacement you need.
Spa filters typically range in diameter from 125 mm to 178 mm. Their length varies from 152 mm for compact filters to over 380 mm for large cartridges. There are two types of connections: fine thread on the inside and coarse thread on the outside. These details make the difference between a filter that fits perfectly and one you have to return.
How do I know which filter fits my hot tub?
The quickest way is to look up the filter code on your current filter. Codes such as S6CH-940, PWW50, or C-8465 are universal reference codes used by various manufacturers. Do you recognize such a code? Then search for all4spas.nl/collections/spa-filters Get the right replacement filter right away. Don't have the code? Grab a ruler, write down the diameter and length in millimeters, and send us a photo. With 19 years of experience, we'll help you find the right match within a day.
Universal Spa Filter S6CH-940/PWW50P3/WY45
Diameter: 127 mm, length: 152 mm. Coarse thread (MPT). Popular filter for compact spas and plug-and-play models, including Passion Spas.
From €24.95 View filterReplacing a Jacuzzi filter: when and how often
The rule of thumb is to replace it every 2 to 3 months with normal use—a few times a week in a hot tub. If you use your hot tub daily or with a larger family, it may need replacing sooner. With less frequent use, a filter can last up to 6 months, but longer than that isn't advisable. Even a filter that appears clean becomes saturated with oils, limescale, and skin fats that are impossible to remove.
There are clear signs that your filter needs replacing. Cloudy water despite proper water treatment is often the cause. A decrease in water flow through the jets is another sign – the pump then has to work harder to push water through the clogged filter, which shortens the lifespan of your circulation pump Shortened. An unpleasant odor or visible cracks in the filter material are also signals that it should be replaced immediately.
A handy approach is the rotation system: buy two filters at once and alternate between them. While one filter is in the spa, the other can dry completely after cleaning. Dry filter material lasts longer.
Universal Spa Filter S4CH-949/PWW50L/0250
Diameter: 125 mm, length: 210 mm. Fine thread (1.5 inch SAE). Commonly used in Passion Spas, Dream Makers, and other compact spas.
From €29.95 View filterCleaning and maintaining a spa filter
Between changes, you'll want to clean your filter regularly—preferably every one to two weeks. Remove the filter from the spa and rinse it thoroughly with a garden hose. Work from top to bottom, spraying between the pleats. This takes five minutes and makes a noticeable difference in water quality.
Can I clean my spa filter in the dishwasher?
No – and this is a common mistake. The high temperatures in a dishwasher (65-75°C) damage the synthetic filter material, causing the pleats to deform and the filter's effectiveness to deteriorate. After a dishwasher cycle, the filter may look clean, but its effectiveness is significantly reduced.
For a thorough deep cleaning, use a special filter cleaner. AquaFinesse Filter Cleaner Works quickly: place the filter in a bucket of warm water with two tablets for an hour. These tablets dissolve oils, limescale, and skin fats that can't be removed with water alone. This significantly extends the usable life of your filter. A box contains 20 tablets, enough for about 10 cleanings.
Popular spa filters at a glance
The type of filter you need depends on your spa model, but some types are much more common than others. Below are the most commonly ordered filters and their specifications. Ordering multiples at once means you'll benefit from a lower unit price.
| Filter | Diameter | Length | Connection | Price |
|---|---|---|---|---|
| S6CH-940/PWW50P3 | 127 mm. | 152 mm | Coarse wire (MPT) | From €24.95 |
| S4CH-949/PWW50L | 125 mm | 210 mm | Fine thread (SAE) | From €29.95 |
| C-8465/PWK65/HS65 | 178 mm | 254 mm. | Fine thread (SAE) | €61,50 |
| J2-25/Jazz 2/JFC25 | 142 mm. | 173 mm | Coarse wire (MPT) | €24,50 |
| S6CH-941/LR100 | 178 mm | 356 mm. | Coarse wire (MPT) | €67,00 |
Not sure which filter is right for your spa? Send us a photo via our website or call us. 0577-858155 - we will find it out for you.
Frequently Asked Questions
How often should I replace my hot tub filter?
With regular use (2-4 times a week), replace your hot tub filter every 2 to 3 months. If you use your spa less often, a filter can last up to 6 months. Watch for signs like cloudy water, reduced jet pressure, or an unpleasant odor—these are signs the filter needs replacing, even if the 3 months haven't yet elapsed.
How do I know which filter fits my hot tub?
Measure the diameter and length of your current filter and check the connection type (fine or coarse thread). Also look for a filter code on the filter itself, such as S6CH-940, PWW50 or C-8465. With this information you can find all4spas.nl Get the right replacement filter right away. Not sure? Send us a photo and we'll help you out.
Can I clean my spa filter in the dishwasher?
No, we advise against this. The high temperatures and aggressive cleaning agents in the dishwasher will damage the filter material. Rinse your filter with a strong jet of clean water or use a special filter cleaner such as AquaFinesse Filter CleanerThis keeps the filter effective and ensures it lasts longer.
What is the difference between a Passion filter and an All4Spa filter?
The Passion filters and All4Spa universal filters have the same dimensions and filtration performance. The main difference lies in the packaging options: Passion filters are available in economical bulk packs of 6 or 12, while All4Spa filters are ordered individually. They are interchangeable in terms of fit and function.
Want to order the right jacuzzi filter right away?
All filters are in stock, delivered quickly from our warehouse in Uddel. Need help choosing? Call us or send us a photo of your current filter.