AONBOY Cat Water Fountain Stainless Steel
- Cat Fountain
- 13.5 cups
- Fountain
- 1
- More reviewed than 81%
Multi-cat households needing a larger, easy-to-monitor fountain will find the 3.2 liter capacity and water level window useful, though it's not the lightest option available.
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How it ranks among the 43 cat fountains we track
4.2★ across 6,600 Amazon ratings, Bayesian-smoothed toward the category average.
6,600 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
300+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 43 cat fountains we track - how the scorecard works · full cat fountains data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Stainless steel construction and a 108 ounce (3.2 liter) capacity define this AONBOY cat fountain, which adds a water level window, multi-stage filter and a silent pump.
Stainless steel construction is a step up from the plastic fountains common at this price, mainly because it resists scratching and bacterial buildup better over time, though the listing doesn't specify how the filter stages differ from a standard carbon cartridge. The water level window is a small but practical addition, letting an owner check remaining capacity without lifting the lid. At 3.2 liters, it's sized for a multi-cat household rather than a single cat's daily intake.
- 108 oz / 3.2 liter capacity
- Stainless steel, hemispherical bowl shape
- Water level window and water tap outlet
- 1 year warranty
Who it's for
Multi-cat households wanting a larger-capacity, easy-to-clean fountain with visible water level will get the most from this one. A single cat wanting something compact and light is better served by a smaller fountain.
Strengths and trade-offs
Drawn from this product's published specifications.
- 3.2 liter capacity suits multiple cats
- Stainless steel resists scratching better than plastic
- Water level window avoids guesswork on refills
- Listed as a silent pump
- About 1.85 lb empty, heavier than plastic fountains
- Multi-filter design likely needs recurring cartridge replacement
Performance notes
Water is drawn through a multi-stage filter by a silent pump, with a water tap outlet providing a flowing stream cats may prefer over a still bowl. The hemispherical shape and stainless steel body are built for repeated cleaning, and the window lets an owner track remaining water without opening the unit.
Specifications
| Brand | AONBOY |
|---|---|
| Model | S3-SC |
| Dimensions & fit | |
| Item Weight | 1.85 pounds |
| Item Dimensions L X W X H | 9.1 × 9.1 × 4.7 inches |
| Dog Breed Size | Small |
| Capacity & performance | |
| Capacity | 13.5 cups |
| Construction & materials | |
| Material Type | Fountain |
| Color | Cat Fountain |
| Included components | |
| Unit Count | 1 |
| Included Components | 1 |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Manufacturer Part Number | S3-SC |
| Customer Reviews | {'ratings_count': '6,664', 'stars': '4.2'} |
| Asin | B0C6Y3KCCL |
| Best Sellers Rank | #11,838 in Pet Supplies (See Top 100 in Pet Supplies) #201 in Cat Fountains |
| Target Species | Cat |
| Item Type Name | 1 |
| Manufacturer | AONBOY |
| Model Number | S3-SC |
How it compares
This product against the closest alternatives we track in cat fountains.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| AONBOY Cat Water Fountain Stainless SteelThis product | 4.2 / 5 | 6,600 | 4.2 / 5 |
| Cat Water Fountain Stainless Steel: 74oz/2.2L Cat Fountain for DrinkingCat | 4.4 / 5 | 11,585 | 4.5 / 5 |
| Veken Innovation Award Winner 95oz/2.8L Pet FountainVeken | 4.3 / 5 | 49,309 | 4.4 / 5 |
| Wonder Creature Cat Water Fountain Stainless SteelWONDER | 4.4 / 5 | 57,300 | 4.4 / 5 |
| PETLIBRO Stainless Steel Cat Water FountainPETLIBRO | 4.6 / 5 | 1,870 | 4.4 / 5 |
Similar cat fountains from other brands
Questions about the AONBOY S3-SC
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the capacity of the AONBOY cat fountain?
It holds 108 ounces, or 3.2 liters.
What material is the AONBOY fountain made from?
Stainless steel, with a hemispherical bowl shape.
Does it have a way to check remaining water without opening it?
Yes, it includes a water level window.