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 $9.90 (compare at $12.38). The 32-Pack (two 16-packs shipped together) sells for $17.40 (compare at $21.75). 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

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 $9.90 (compare at $12.38) · 32-Pack at $17.40 (compare at $21.75)
• 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

📦 What's in the Box