Hot tub filter with threads – the ultimate guide

EGo3 Whirlpool Filter mit Gewinde – Fein- und Grobgewinde im Vergleich

Threaded Hot Tub Filters

A threaded hot tub filter is a type of filter that is screwed directly into your hot tub’s filter connection using an external or internal thread. The advantage: The connection is sealed, stable, and easy to install – without tools. Depending on the manufacturer and model, there are different thread sizes, which is why choosing the right filter is crucial.

What thread sizes are available?

The two most common thread sizes for threaded hot tub filters are:

  • 1 1/2 inch SAE (46–47 mm) – widely used for branded Spas such as Hotspring, Wellis, Balearis, Superior Wellness, and Platinum Spas
  • 2 inch (60 mm) – typical for Artesian Spas, Master Spas, Cal Spas, Jacuzzi, and many other premium manufacturers

A distinction is also made between fine thread and coarse thread, which must be taken into account when selecting a product.

EGo3 Threaded Hot Tub Filter – the smart alternative

The EGo3 filter is not an ordinary cartridge filter. It works with self-disinfecting filter balls made from high-quality fiber material – Made in Austria. A single EGo3 set replaces up to 10 conventional cartridge filters and lasts up to 10 years with proper care. This means savings of around 800 euros compared with standard cartridge filters.

EGo3 filters 40× more finely than conventional cartridge filters – while also being easier to clean: once per season is sufficient.

The EGo3 7× Guarantee

EGo3 filters are:

  • ✔ More affordable to operate
  • ✔ Longer-lasting – up to 10 years
  • ✔ Finer – 40× more precise than cartridge filters
  • ✔ More reliable – proven by over 35,000 customers
  • ✔ More environmentally friendly – less waste from disposable filters
  • ✔ Easier to clean
  • ✔ Dirt stays in the filter – no backwashing into the water

In addition, EGo3 offers a unique 4-month money-back guarantee.

Which EGo3 threaded filter fits my hot tub?

SET 1 – Fine thread 1 1/2 inch (46–47 mm)

Suitable for: Hotspring Spas, Hotspring Limelight, Hotspring Freeflow, Hydro Spas, Infinitas (MB series), Maax Spas with threads, Perfect Spa Type 5, Sundance Burlington/Hawthorne (2007–2013), Vita Spas, Wellis Kilimanjaro Standard, and many more.

Replaces, for example: Pleatco PMAX50P4-EC, Unicel 5CH-35, Filbur FC-0300, Hotspring 73178 Tri-X

SET 2LW – Coarse thread 1 1/2 inch (46–47 mm) – LOW FILTER

Suitable for: Balearis, Superior Wellness, Platinum Spas, and other models with a 1 1/2-inch coarse thread.

SET 3 – Fine thread 2 inch (60 mm)

Suitable for: Artesian Spas (Platinum Elite, Island, Tropic series), Master Spas, Cal Spas, Marquis Spas, Hotspring Hotspot series, Sundance Spas up to 2007, old Jacuzzi J200/J230/J270/J280, Tuff Spas up to 2021, and many more.

Replaces, for example: Pleatco PCAL60F-2M, Unicel 5CH-352, Filbur FC-0202, Master Spas X268365

SET 4 JA – Coarse thread 2 inch (60 mm) for Jacuzzi

Specially developed for current Jacuzzi models with a 2-inch coarse thread.

SET 4 VB – Coarse thread 2 inch (60 mm) for Villeroy & Boch / Bullfrog Spas

The ideal solution for Villeroy and Boch hot tubs and Bullfrog Spas.

EGo3 WAVE FILTER – for threaded INTEX hot tubs

The WAVE FILTER was specially developed for INTEX inflatable hot tubs with a threaded connection. 

EGo3 WAVE FILTER – for Arebos, Netspa, Home Deluxe, Costway (Filter HW)

This WAVE FILTER version with a threaded connection is specially designed for the common inflatable hot tubs from the brands Arebos, Netspa, Home Deluxe, and Costway.

EGo3 WAVE FILTER – for LAY-Z SPA and BEST WAY hot tubs

The matching WAVE FILTER with a thread for LAY-Z SPA and BEST WAY hot tubs.

No thread? No problem – SET 5 Toploader

If your hot tub uses a filter without a thread or with an internal thread in the 150 mm compartment, the SET 5 Toploader is the right choice. It works regardless of length and thread type and is suitable for a wide range of manufacturers, including Arctic Spas, Beachcomber, Wellis, Jacuzzi J210–J275, Armstark, Artesian South Seas, and many more.

Conclusion: The right threaded hot tub filter saves time and money

Anyone looking for a threaded hot tub filter should first check their hot tub’s thread size (1 1/2 or 2 inches) and thread type (fine or coarse thread). With the right EGo3 set, you get a durable, affordable, and environmentally friendly solution – with proven filtration performance and over 35,000 satisfied customers throughout Europe.

Still unsure which set is right? Use our product pages or contact us directly – we will help you find the right filter for your hot tub.

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