The Alpine Spas Milford takes the Alpine Tubs Microban filter for Milford and Tekapo (336 x 126 mm) (part FILTER-ALPTUB-ELEC) as its cartridge; Australian sellers list it from A$99.99 as of 30 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your spa
Alpine Spas Milford
Spa
Confirmed against Alpine Spas's listConfirmed against Alpine Spas's own compatibility list
Not yours? Change
Takes the FILTER-ALPTUB-ELEC cartridge
Alpine Tubs Microban filter for Milford and Tekapo (336 x 126 mm) · check the code on your old part before ordering.
Your spa
Spa
Confirmed against Alpine Spas's listConfirmed against Alpine Spas's own compatibility list
Takes the FILTER-ALPTUB-ELEC
Cartridge · check the code on your old part.
Other Alpine Spas that take the FILTER-ALPTUB-ELEC
GenuineGenuine Alpine Spas
$99.99
Spa Supplies · 30 OctLowest genuine · Spa Supplies · checked 30 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Alpine Spas. Compatible: another brand.Genuine is made by Alpine Spas. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $99.99
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Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Genuine Alpine Spas
1 seller
Opens Spa Supplies in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when it is discoloured or hard to clean, Alpine Spas says; until then rinse it weekly and soak it monthly.
After replacing: No filter reminder is described. Note the date you fit it.
How to change the cartridge in your Alpine Spas Milford
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Switch the spa off at the isolating switch or at the wall.
- 2Open the filter housing and lift out the cartridge.
- 3Hose the cartridge clean, or fit a new one.
- 4Refit the cartridge and housing and switch the hot tub back on.
Every number this part goes by
- Retail name:
- Alpine Tubs filter
- Retail name:
- FILTER-ALPTUB-ELEC
Sellers list any of these; they are the same part.
About your Alpine Spas Milford
Alpine Spas — Alpine Tubs electric hot tub. Its cartridge is the Alpine Tubs Microban filter for Milford and Tekapo (336 x 126 mm), part FILTER-ALPTUB-ELEC.
Where the model number is: The model name is on a silver plaque, usually along the bottom edge of the spa pool cabinet. If you can't find it, measure the old cartridge's length and diameter.
Common questions
- Which cartridge fits the Alpine Spas Milford?
- The Alpine Spas Milford takes the Alpine Tubs Microban filter for Milford and Tekapo (336 x 126 mm) (part FILTER-ALPTUB-ELEC).
- Where can I buy the FILTER-ALPTUB-ELEC in Australia?
- We track 1 Australian seller for the FILTER-ALPTUB-ELEC; the lowest listed price when we last checked was A$99.99 at Spa Supplies. Prices are re-checked daily and dated on this page.
- How do I fit the FILTER-ALPTUB-ELEC in an Alpine Spas Milford?
- 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A clogged cartridge slows the flow and the pump works harder, and a torn one lets dirt back into the water, so the pool or spa clouds.
- How do I reset the reminder?
- No filter reminder is described. Note the date you fit it.
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