A fundamental design feature of all Marquis hot tubs is high-flow filtration. For best results and to ensure long-term peace of mind, Marquis-approved hot tub filters have been tested for maximum compatibility, reliability and durability. Don’t compromise the efficiency of your hot tub or jeopardize your water care with off-brand filters, knockoffs or cheap imported spa supplies. Only use Marquis-approved filters sold by an authorized Marquis hot tub dealer.

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Marquis ConstantClean filtration takes advantage of the hot tub’s primary high-flow pump, with a flow rate up to 80 gallons per minute (303 LPM) when running at low speed. This filters the hot tub's entire water volume an average of 34 times, while only running twice per day for a total of two to three hours.1

  • Other brands: Most hot tub manufacturers use a low-flow circulation pump that runs 24/7, with a flow rate up to seven gallons per minute (26 LPM). This filters the water an average of 28 times per day, while running for 24 hours straight.1 Off-brand filters, knockoffs and cheap imports are designed for these slow, low-flow filtration systems and are not suitable for Marquis hot tubs.

1Comparison based on a 350 gallon spa with a 24/7 low-flow circulation pump, versus a Marquis dual-speed 160 GPM (606 LPM) pump running at low speed (80 GPM/ 303 LPM) for two to three hours per day.


Marquis-approved hot tub filters use high-quality filter media with the maximum recommended surface area in each filter size. This improves filter lifespan and ensures highly-efficient filtration. For optimum performance, Marquis recommends periodic cleaning of your filters using Marquis® Rapid Action Filter Cleaner according to the product instructions.

  • Other brands: Off-brand filters, knockoffs and cheap imports cut corners by using flimsy filter media with reduced surface area. They are typically less durable, less efficient and have a shorter lifespan.


Marquis recommends using filters treated with a premium anti-microbial coating to discourage bacterial growth within the filter media.

  • Other brands: Off-brand filters, knockoffs and cheap imports often lack reliable anti-microbial protection. As a result, the filter fibers are more susceptible to bacterial growth. 


Depending upon which Marquis hot tub you own and its model year, the compatible filter will either be:

  • Slip-on versus threaded
  • 25, 35 or 50 ft2
  • One filter or two filters

For more information, consult your hot tub Owner’s Manual or contact your local Marquis Dealer.

Signature 2000 and newer Threaded 50 ft2 20091
  2000 and newer Threaded 35 ft2 20092
  1997 to 1999 Slip-on 50 ft2 20044
  Pre-1997 Slip-on 35 ft2 20045
Vector21 2016 and newer Threaded 35 ft2 20092
e-Series 2010 to 2018 Slip-on 35 ft2 20364
  2008 to 2010 Slip-on 25 ft2 20342
Marquis Elite 2020 and newer Threaded 50 ft2 20690
Celebrity Elite 2018 to 2019 Threaded 50 ft2 20690
Celebrity 2019 and newer Threaded 35 ft2 20042
  2012 to 2018 Slip-on 25 ft2 20342


If your local water supply contains sediment, or has a total hardness above 250 parts-per-million (ppm), you can purchase a pre-filter attachment for your garden hose when filling your hot tub. Contact your local Marquis Dealer for more information.

  • Marquis® Pura-Fill 5-Stage Pre-Filter: Designed to remove sediment and reduce calcium and other mineral content. Recommended if your local water supply has a total hardness above 250 ppm.
  • Marquis® Pre-Fill Filter: Designed to remove sediment only.


Your local Marquis Dealer is a bona fide water care expert with a keen understanding of your Marquis hot tub. They can recommend the Marquis-approved filters and cleaning products you need to keep your hot tub running as efficiently as possible.

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