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Filters Cartridges (Disposable 1 Micron)

Filters Cartridges (Disposable 1 Micron)

PuraSpa® Premium Filters work faster and more efficiently than any other hot tub filter on the market. Our 1 Micron disposable filters typically last 3 to 5 months, depending on bather load.

PuraSpa® filters are made in the same USA plant where the original Micropure disposable filters were made. They are identical to the original and still manufactured to the same high standards. These are the only high quality, North American made, 1 micron filters available today - beware of other knock-off brands made overseas, that simply don't compare.

Puraspa PF-170 Filter Puraspa PF-1188 Filter Puraspa PF-1050 Filter Puraspa PF-925 Filter Puraspa hot tub pre-filter

There are many reasons to choose PuraSpa® Premium, 1 Micron Filters:

  • You will use less chemicals and required chemicals will last longer, with less contaminants in the water. You will notice the difference in your water.
  • They filter faster and more efficiently than any other hot tub filter on the market. Faster filtration means faster water recovery after a heavy bather load, taking contaminants out of the water before they cause a decrease in your sanitizer level.
  • PuraSpa® 1 Micron Filters eliminate the need for defoamers, clarifiers, cleaners, enzymes and descummers.
  • PuraSpa® filters remove solids in your spa water and will lowers the TDS on a constant basis, extending the time between hot tub water changes.
  • Our Filters remove minerals, stopping buildup on spa parts, thus extending the life of your equipment.
  • PuraSpa® Filters have a lower density at the surface, with progressively higher density towards the center of the filter. This allows particles to get trapped through the entire depth of the filter, creating superior dirt-holding capacity.
  • Our filters will lower your maintenance time and costs on chemicals. No filter cleaning ever - simply replace after 3 to 5 months.

Filtration effectiveness is based on 2 standards:

  1. Micron Rating - The minimal size of particle that can be filtered out (the smaller the better).
  2. Efficiency - The percentage of particles, above a certain size, that can be filtered out (the higher the better).

1 Micron vs Pleated Filter Comparison

Quality PuraSpa® 1 Micron Filters have a significantly better rating in both micron and efficiency. PuraSpa® Filters will also filter out significantly more weight of debris before becoming saturated. The micron rating and efficiency of a Pleated Filter will also decrease after each cleaning.

Filters sorted from longest to shortest:



  • PF-170 - PuraSpa 1 Micron Disposable Filter (13-5/16" L)

    The Original Size - Replaces 4-15/16" diameter, 13-5/16" length, 2-1/8" core.


    • Micropure MF-170 (identical)
    • Essentials Brand EB-170
    • Unicel C-4326, C-4950, C-4625, C-4637
    • Pleatco PRB25IN3, PRB50IN, PRB25IN
    • Filbur FC-2392 (17-175-4000), FC-2375, FC-2890, FC-2370
    • Darlly PP1271, a.k.a. C4950 DIS (Made in China)

    Volume savings! Buy 4 or more for $22.99 each!

    CAD $24.88
  • PF-1188 - PuraSpa 1 Micron Disposable Filter (11-7/8" L)

    Replaces 4-5/8" to 4-15/16" diameter, 11-7/8" length, 1-1/16 to 2-1/8" center core.


    • Micropure MF-1185 (identical)
    • Unicel C-4325, C-4327, C-4332, C-4430
    • Pleatco PA225, PMT25
    • Filbur FC-1220, FC-0640, FC-1620, FC-2625

    Volume savings! Buy 4 or more for $24.49 each!

    CAD $25.99
  • PF-1050 - PuraSpa 1 Micron Disposable Filter (10-1/2" L)

    Replaces 6" diameter, 10-1/2" length, 1-15/16" open center core.


    • Micropure MF-1075 (exactly the same)
    • Unicel C-6430
    • Pleatco PWK30
    • Filbur FC-3915

    Volume savings! Buy 4 or more for $24.49 each!

    CAD $25.99
  • PF-925 - PuraSpa 1 Micron Disposable Filter (9-1/4" L)

    Replaces 4-15/16" diameter, 9-1/4" length, 2-1/8" open center core.


    • Micropure MF-925 (exactly the same)
    • Unicel C-4335
    • Pleatco PRB35-IN
    • Filbur FC-2385
    • Darlly PP1275 (Made in China)

    Special Pricing! - Buy 4 or more for $21.99 each! Buy 8 or more for $19.99 each!

    CAD $24.88
  • PF-725 - PuraSpa 1 Micron Disposable Filter (7-1/4" L)


    • Micropure MF-725 (exactly the same)
    • Other filters 6 5/8 - 8 1/4 in Height
    • A Threaded Core is usually required (sold seperately)

    Volume savings! Buy 4 or more for $24.49 each!

    CAD $25.99
  • Filter Adapter, 2" female thread (fits PF-170)

    Adapter allows use of the PuraSpa PF-170 on newer Arctic Spas (replaces Silver Sentinel - threaded style), and other spas that use a filter with a 2" female thread.

    You only need to purchase the adapter once, and is re-usable with disposable filters or pleated filters.

    CAD $17.95
  • Pure Fill Pro Spa Pre-Filter, 0.5 Micron Carbon Block

    Purify your spa water as it enters your hot tub, by attaching a 0.5 Micron, Activated Carbon Spa Pre-Filter to your garden hose. Your chemicals will work better and your water will be easier on your skin and hot tub parts. Filters up to 10,000 Gallons!

    Volume savings! Buy 2 or more for $22.99 each!

    CAD $24.99
  • X10 Water Pre-Fill Filter

    Get the quality of bottled water with the X10 KDF & granular activated charcoal filter. Removes up to 99% of water contaminants, eliminating most spa and pool water problems.

    Rated to filter 8,000 gallons of water, but can last much longer, depending on water conditions.

    CAD $69.99