Arctic Spas
Silver Sentinel Disposable Filter (Thread-In)
Silver Sentinel Disposable Filter (Thread-In)
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Our most popular filter — change it quarterly, clean it never.
The Silver Sentinel disposable filter threads into the ArcticSpas-logo intake on every Arctic Spas hot tub built 2009 or later, plus the current Core and Classic Series. Run it for about three months, then drop it in the recycling bin and thread in a fresh one. No hosing pleats, no overnight soaks, no filter cleaner to buy.
Hundreds of layers of porous polypropylene trap particles all the way through the filter body, filtering down to 1 micron — typical pleated cartridges stop around 70 microns. Today this filter is manufactured under the Atlantis name — same filter, same fit, newer label.
Fits: Arctic Spas 2009–2019 + current Core and Classic Series · Includes: 1 filter (about 3 months) · Also available as a 3-pack or 5-pack.
Not sure which intake you have? Bring your old filter to any of our three Ontario showrooms and we'll match it on the spot.
Part numbers: Arctic Spas factory parts PRT-900007 / PRT-900003 (also sold under the Atlantis name). This is a proprietary depth filter — there is no aftermarket pleated equivalent.
Frequently asked questions
Which hot tubs does the Silver Sentinel thread-in filter fit?
Which hot tubs does the Silver Sentinel thread-in filter fit?
Every Arctic Spas hot tub built 2009 or later with the ArcticSpas-logo threaded intake, plus the current Core and Classic Series. (Pre-2009 Arctic and Coyote spas use the drop-in version instead.)
How often should I replace it, and do I need to clean it?
How often should I replace it, and do I need to clean it?
Run it about three months, then replace it — no cleaning, ever. It's a disposable filter: no hosing pleats, no overnight soaks, no filter cleaner to buy.
How is the Silver Sentinel different from a pleated filter?
How is the Silver Sentinel different from a pleated filter?
Instead of pleats, it uses hundreds of layers of porous polypropylene that trap particles all the way through the filter body, filtering down to 1 micron — far finer than typical pleated cartridges.
Is the Atlantis filter the same as the Silver Sentinel?
Is the Atlantis filter the same as the Silver Sentinel?
Yes — the same filter is now manufactured under the Atlantis name. Same filter, same fit, newer label.
I'm not sure which filter my spa takes. What should I do?
I'm not sure which filter my spa takes. What should I do?
Bring your old filter to any of our three Ontario showrooms (Kitchener, London, Windsor) and we'll match it on the spot.
