Cat Water Fountain Filters – 16-Pack & 32-Pack Replacement (Carbon + Foam)
The PawVortex Cat Water Fountain Filter Replacement Set contains 16 filters: 8 activated carbon filters and 8 high-density foam filters. Each filter lasts approximately 2 weeks. The set weighs 1.76 oz. Package dimensions are 8.5 × 8.5 × 0.7 inches. Compatible fountains include ATMZIQXR, GIOTOHUN, KOOGMOON, UMOCUOY, IHOUONE, and HOOISE. The 16-Pack sells for $16.90 (compare at $20.00). The 32-Pack (two 16-packs shipped together) sells for $27.40 (compare at $32.40). This product has a 4.7-star rating based on 73 verified reviews. Orders over $35 ship free. Delivery takes 2–7 business days. Returns accepted within 30 days with free return shipping.
Your cat's fountain is only as clean as its filter. Every 2 weeks, that filter is trapping hair, neutralizing odors, and pulling heavy metals from your pet's drinking water — and when it's exhausted, none of that is happening anymore. The PawVortex 16-Pack Replacement Filter Set gives you 8 activated carbon filters and 8 high-density foam filters, so you're never caught scrambling for a replacement. Compatible with ATMZIQXR, GIOTOHUN, KOOGMOON, UMOCUOY, IHOUONE, and HOOISE cat fountains, this value pack keeps your cat's water fresh for up to 8 weeks straight.
What Makes the PawVortex Filter Set Different
Most replacement filters are single-layer — they catch debris but do little about odor or dissolved minerals. The carbon filters use a three-layer system: an outer fabric mesh that traps hair and particles, an activated carbon core that neutralizes unpleasant odors, and a mineral-rich resin layer that may help reduce heavy metals in your cat's water. That's the same filtration logic used in premium countertop water filters, applied to your cat's fountain.
The foam filters work alongside the carbon filters to catch finer debris before it reaches the pump, extending the life of your fountain. Together, they form a complete two-stage filtration system. These filters are compatible with our ATMZIQXR Stainless Cat Fountain (88oz) and Stainless Steel Cat Fountain (74oz) — both available at PawVortex.
Choose Your Option
| Option | What's Included | Best For |
|---|---|---|
| 16-Pack — $16.90 | 8 Carbon Filters + 8 Foam Filters | Single fountain, ~8 weeks of filtration |
| 32-Pack — $27.40 | 16 Carbon Filters + 16 Foam Filters (2×16-Pack shipped together) | Multi-cat homes or stocking up for ~16 weeks |
Replace filters every 2 weeks for optimal water quality. Frequency may vary based on number of cats and fountain usage.
Key Features
- Perfect Fit: Compatible with ATMZIQXR, GIOTOHUN, KOOGMOON, UMOCUOY, IHOUONE, and HOOISE cat water fountains
- Three-Layer Carbon Filtration: Outer mesh traps hair and debris, activated carbon neutralizes odors, mineral resin may help reduce heavy metals
- High-Density Foam Filters: Catches fine particles and protects your fountain pump from buildup
- 2-Week Filter Life: Each filter pair lasts approximately 2 weeks — 16-Pack covers ~8 weeks, 32-Pack covers ~16 weeks
- Value Pack Pricing: 16-Pack at $16.90 (compare at $20.00) · 32-Pack at $27.40 (compare at $32.40)
- Free Shipping: On all US orders over $35 · Delivered in 2–7 business days
- 30-Day Returns: Not satisfied? Return it within 30 days — free return shipping included
Who This Is For
This filter set is ideal for cat owners with one or more ATMZIQXR, GIOTOHUN, KOOGMOON, UMOCUOY, IHOUONE, or HOOISE fountains. It works well for households with single cats or multiple cats — the 32-Pack is especially practical for multi-cat homes where the fountain runs continuously. Whether you have a curious kitten, a senior cat who needs consistent hydration, or a picky drinker who only drinks from moving water, clean filtration makes a real difference in how much your cat drinks.
Veterinarians widely recommend filtered, flowing water to support urinary tract health in cats — particularly for indoor cats and breeds prone to kidney issues such as Persians, Maine Coons, and Ragdolls. Keeping your filter on a consistent 2-week replacement schedule is one of the simplest things you can do for your cat's long-term health. Read our Best Pet Water Fountains 2026 guide for expert picks and hydration tips.
Why PawVortex Customers Love This
This filter set holds a 4.7★ rating from 73 verified reviews. Customers highlight how well the filters fit their fountains without any trimming or modification, and note that the carbon layer makes a noticeable difference in water smell within the first day of use. The value pack format means fewer reorder interruptions — something multi-cat households especially appreciate. Browse our full pet water fountains collection to find the perfect fountain to pair with these filters.
The PawVortex Promise
Every order over $35 ships free to US addresses and arrives in 2–7 business days. Not happy with your purchase? Return it within 30 days — we cover the return shipping, no questions asked. We stand behind every product in our catalog because your cat's health and your peace of mind are worth it.
Clean water, happy cat — the PawVortex filter set makes it effortless.
📐 Product Specifications
| Specification | 16-Pack | 32-Pack |
|---|---|---|
| Brand | PawVortex | PawVortex |
| Price | $16.90 | $27.40 |
| Compare-At Price | $20.00 | $32.40 |
| Filter Count | 8 Carbon + 8 Foam | 16 Carbon + 16 Foam |
| Filter Lifespan | ~2 weeks per filter pair (~8 weeks total) | ~2 weeks per filter pair (~16 weeks total) |
| Package Weight | 1.76 oz | 3.52 oz |
| Package Dimensions | 8.5 × 8.5 × 0.7 in | N/A (2 packages) |
| Compatible Fountains | ATMZIQXR, GIOTOHUN, KOOGMOON, UMOCUOY, IHOUONE, HOOISE | |
| Shipping | Free on US orders over $35 · 2–7 business days | |
| Return Policy | 30-day returns · Free return shipping | |
📦 What's in the Box
| Item | 16-Pack | 32-Pack |
|---|---|---|
| Activated Carbon Filters | 8 | 16 |
| High-Density Foam Filters | 8 | 16 |
| Total Filters | 16 | 32 |
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Frequently Asked Questions
These filters work perfectly with our fountain. The water is noticeably cleaner and our cat has been drinking more. Great value.
One of our cats is prone to UTIs so clean water is a priority. These filters remove impurities and we've noticed a positive change in her health.
We have the PETLIBRO cordless fountain and these filters fit perfectly. Our cat loves the fresh water and we love the convenience.
Had a question about compatibility and support was super helpful. Filters are high quality and our IHOUONE fountain runs like new.
Our Maine Coon is very particular and she's been using the fountain non-stop. The water tastes clean and fresh. Love the 16-pack value.
Wish the compatibility list was longer doesn't fit all fountain brands. My picky cat drinks so much more since I started changing filters on schedule. What stands out is Free US shipping on orders over $35; 30-day returns with free return shipping. The 2-week filter lifespan per pair 16-Pack covers ~8 weeks, 32-Pack covers ~16 weeks makes a big difference. Overall, I'm very satisfied with this purchase.
My initial impression was that The carbon layer makes a noticeable difference in water smell within the first day. I particularly like that Three layer carbon filtration outer mesh traps hair/debris, activated carbon neutralizes odors, mineral resin may help reduce heavy metals. This has become a staple in our pet care routine.
These filters for our cat water fountain are good quality. They keep the water fresh and seem to last the advertised time. Carbon filter removes impurities effectively. Good value for a 2-pack. Will keep buying these.
The price is right and the filters do the job. Our cat's water stays clean and the fountain runs smoothly.
This is our second order and we'll keep ordering. The filters are reliable and the customer service is excellent.
The filters arrived quickly and fit our fountain perfectly. The water tastes fresh and our cat has been using the fountain more often.
I was spending too much on branded filters. These are just as good and the 16-pack lasts us four months. Highly recommended.
These filters work exactly as described. Our fountain is cleaner and our cat is drinking more. Great product at a fair price.
The 32-pack is incredibly convenient. I don't have to remember to order filters every month and the quality is consistently excellent.
These filters have been a reliable addition to our fountain routine. The water is always clean and our cats love it.
Exactly what I needed for our ATMZIQXR fountain. The filters are high quality and the water flows perfectly. Highly recommend.
Our fountain runs like new with these filters. The water is fresher and our cat is happier. The 16-pack is a great value.
The carbon filters are effective but the foam pre-filters seem to clog up before the two-week mark. Still a solid product for the cost.
These filters are easy to install and the water quality improved immediately. Our cat has been drinking more and seems more energetic.
We have three cats and one dog sharing the fountain. These filters handle the heavy use well and keep the water clean for days.
These fit our fountain but just barely. The water quality is good though and the price is fair. Just double-check your dimensions first.
I've been using these for a few months now and they're consistently good. The water is always clear and our cat seems healthy and hydrated.
HOOISE fountain replacement filters are expensive but these work just as well. Our cat loves the fresh water and we love the savings.
Our picky siamese now drinks from the fountain regularly. These filters remove the chlorine taste and she seems much happier.
These filters do what they're supposed to do. I knocked off a star because they took longer to arrive than expected but the product is fine.
I was hesitant to try a generic brand but these exceeded my expectations. The water quality is excellent and the price is unbeatable.
The 32-pack is such a convenience for our household. I don't have to worry about reordering all the time and the filters are consistently good.
The carbon filters are great but the foam pre-filters could be denser. I've noticed some debris still gets through after about a week.
We struggled to get our cat to drink enough water. These filters improved the taste so much that she finishes her bowl daily. Highly recommend.
Ordered on Monday and arrived Wednesday. The filters fit our UMOCUOY fountain nicely and the water tastes fresher than ever.