Side-by-side decision
Gardner Pet Cordless 3.8 L vs Vortex 1-Gallon Cat Fountain: Which Power Setup Fits Your Home?
Pick the Gardner Pet Cordless Cat Water Fountain (3.8 L) if there is no outlet where your cat drinks; pick the Gardner Pet Vortex Cat Fountain (1 Gallon) if a USB power source is nearby and you want water that keeps moving, because the Cordless model runs only in sensor mode on battery. As of Nov 2, 2026, Amazon lists the Vortex as currently unavailable.
Gardner Pet's battery-powered 3.8 L fountain vs its USB-powered 1-gallon Vortex, compared by power, flow mode, drinking surface, and filters.
Editorial comparison · Updated · ByPet Product Compass Editorial ·Editorial policy ·Methodology
Quick decision
Choose A
Product A
Homes where the best drinking spot has no convenient outlet, or where a cord across the floor is a problem
Choose B
Product B
A drinking spot near an outlet where continuous flow matters more than cordless placement
Choose none
Choose none for now
You want a stainless or ceramic body, a long ownership track record, or a fountain sized for many large pets. Neither listing covers those needs.
The products
Verify the option before using its merchant link.
Product A
Gardner Pet Cordless Cat Water Fountain, 3.8 L
Best for
Homes where the best drinking spot has no convenient outlet, or where a cord across the floor is a problem
Skip if
You want continuous flow away from an outlet, prefer a long track record, or do not want to add another device to your charging routine.
Product B
Gardner Pet Vortex Cat Fountain, 1 Gallon
Best for
A drinking spot near an outlet where continuous flow matters more than cordless placement
Skip if
Your preferred spot has no outlet, you want a stainless steel drinking surface, or you need a wall adapter in the box.
Comparison matrix
The dimensions that change the decision.
| Product | Decision context | Listing check | Decision |
|---|---|---|---|
| Gardner Pet Cordless Cat Water Fountain, 3.8 L | Homes where the best drinking spot has no convenient outlet, or where a cord across the floor is a problem | Check the exact variant, directions and ingredients or materials on the current listing. | |
| Gardner Pet Vortex Cat Fountain, 1 Gallon | A drinking spot near an outlet where continuous flow matters more than cordless placement | Check the exact variant, directions and ingredients or materials on the current listing. |
Power and placement
Is there an outlet or USB power source next to the spot where your cat drinks?
Flow behavior
Does your cat need continuously moving water, or is sensor-activated flow acceptable?
Upkeep and cost
Will you keep up with charging, monthly filters, and cleaning, and how much are you willing to spend upfront?
The short version
Both Gardner Pet fountains hold about one gallon. The Gardner Pet Cordless Cat Water Fountain (3.8 L) holds 134 oz and the Gardner Pet Vortex Cat Fountain (1 Gallon) holds 3.78 L. So capacity is not the deciding factor. Power is. The Cordless model has a built-in 5,000 mAh battery and can sit anywhere, but its listing says that on battery it runs only in sensor mode. The Vortex runs continuously, but only while it is connected by USB cable to an adapter or power bank, and no wall adapter is included.
Everything here comes from the two Gardner Pet Amazon listings and the brand FAQ on them, not from our own use of either fountain.
Side by side
| Gardner Pet Cordless Cat Water Fountain (3.8 L) | Gardner Pet Vortex Cat Fountain (1 Gallon) | |
|---|---|---|
| Capacity | 3.8 L / 134 oz | 3.78 L / 1 gal |
| Power | Built-in 5,000 mAh battery; USB-C charging | USB cable; no wall adapter included |
| Flow | Sensor or continuous when plugged in; sensor only on battery | Continuous |
| Drinking surface | Stainless steel tray | Polypropylene dual-dome tray |
| Filters | Layered filter; monthly replacement; bundle count unclear (see below) | Three-layer filter (fabric, maifan stone, fabric); 2 included; replace about every 30 days |
| Outage behavior | Keeps running on battery, per listing | Tray holds about 280 to 300 ml of standing water, per listing |
| Cleaning rules in listing | Battery module must not be immersed; soak new filter 5 min, rinse 30 s | Tank, tray, and pump come apart for rinsing; clean weekly |
| Noise claim | None stated | Under 30 dB (seller claim) |
| First available on Amazon | October 5, 2026 | September 10, 2025 |
Source: Gardner Pet Amazon listings, ASIN B0H392WP8Z (Cordless, model GP00B0826BK-UC-01) and ASIN B0F53XVG7M (Vortex), as of 2026-11-02. Noise and battery figures are seller claims.
Power and placement
Start with the drinking spot. If your cat already drinks somewhere near an outlet, or you are happy to put a USB adapter there, the Vortex’s cable is a small price for continuous flow. If the best spot is far from power, or a cord would be chewed or tripped over, the Cordless model is the one designed for that.
The Cordless model also has a practical outage advantage. The listing says it keeps running on battery when the power goes out. The Vortex takes a different approach: its dual-dome tray holds about 280 to 300 ml of water, so some standing water stays available when the pump stops. That is a reservoir, not circulation.
Flow behavior
This is the trade-off people miss. The Cordless listing says plainly that in cordless mode only sensor mode is available, so water starts moving when a pet approaches. Plugged in, you can choose continuous flow. The Vortex has no battery, so whenever it has power it circulates continuously.
If your cat is drawn to constantly moving water, the Vortex delivers that wherever it can be powered. Running the Cordless model continuously means keeping it plugged in, which gives up the reason to buy it. If either stream starts to gurgle or hum, why a cat water fountain gets noisy traces the sound to low water, a dirty impeller, or air in the pump.
Sensor-only flow is worth thinking about if your cat is wary of new things. One owner on Reddit who swapped a plug-in fountain for a wireless motion-sensor model wrote: “I set up the new one yesterday and they wouldn’t go near it. I think they were afraid of it since it was louder than their old one.” (r/CatAdvice, Jan 2025) That post is not about a Gardner Pet model, but it is a reason to set the Cordless model up next to your cat’s usual water for a while rather than swapping one for the other.
Drinking surface and cleaning
The Cordless model’s stainless steel tray is easier to scrub than plastic and is the material many owners prefer for the surface the cat drinks from. Which part is steel, ceramic, or plastic on several models is in ceramic vs stainless steel cat water fountain parts. The Vortex body and tray are polypropylene. Its listing says the parts come apart fully for rinsing, and its brand FAQ recommends weekly cleaning and monthly filter changes.
The battery changes the cleaning routine more than the tray material does. The Cordless listing’s directions say the battery module cannot be immersed in water, so it has to come off or stay well away from the sink before you rinse anything. They also say to soak each new filter for 5 minutes and rinse it for 30 seconds, and to store the pump somewhere dry. The Vortex has no battery: unplug the USB cable, lift out the splash guard (its listing says the guard sits inside the water bowl), and the tank, tray, and pump can all go under the tap.
Neither listing describes how to open the pump itself, so we cannot say which pump is easier to clear of hair. Both need it. For a model-by-model routine, including PETKIT’s published pump take-apart order for comparison, see how to clean a cat water fountain.
Filters and running costs
Both listings recommend replacing filters about monthly, so filters are an ongoing cost with either fountain. The Vortex listing says two filters are included. The Cordless listing contradicts itself: variant names advertise 5- and 10-filter bundles, while the packing list says three filters. Confirm the box contents on the live listing before you pay extra for a larger bundle.
Track record
The Vortex has been on Amazon since September 2025. The Cordless model appeared on October 5, 2026, only days before we checked. A new listing is not a problem in itself, but it means fewer ownership reports about battery ageing, pump wear, or leaks. Neither listing offers long-term durability data.
Seller claims to treat with care
- Cordless: “over 30 days” of battery use and “12–15 days” of fresh water. Both depend on use, and neither has been verified here.
- Vortex: “ultra quiet” pump under 30 dB. Not measured here.
Who should buy which
- Gardner Pet Cordless Cat Water Fountain (3.8 L). Best for: a drinking spot with no outlet nearby, or a home where a cord on the floor is a problem. Skip if: your cat only drinks from water that is always moving and you would have to keep it plugged in anyway.
- Gardner Pet Vortex Cat Fountain (1 Gallon). Best for: a spot near a USB adapter or power bank where continuous flow matters most. Skip if: there is no power where your cat drinks, or you want a stainless drinking surface.
For a wider framework on capacity, materials, filters, and cleaning, read our guide to choosing a cat water fountain.
Update: Vortex availability and PETKIT alternatives
On Nov 2, 2026, the Vortex listing on Amazon still showed it as currently unavailable. If you want a plug-in fountain while the Vortex is out of stock, our Gardner Pet fountain vs PETKIT EverSweet comparison covers the USB-powered EverSweet Solo SE and 3 Pro. Both have wireless pumps, but both still need to stay plugged in.
If the Vortex is unavailable
There is no verified merchant link for the Vortex right now. If you were choosing between these two for a large tank and want a cordless option that is currently listed, the PETKIT EVERSWEET MAX (B0CXHM344N) is the closest match. It is a 3 L (101 oz) fountain with a built-in 5,000 mAh battery, a wireless pump, and a 304 stainless steel tray. Like the Gardner Cordless, it does not run continuously on battery: PETKIT’s manual says the pump runs intermittently (25 seconds per hour by default), and continuous flow needs the USB cable. The app connects over Bluetooth, and no wall adapter is included. Its card is below.
Available alternative
If a compared product is unavailable
Available alternative
PETKIT EVERSWEET MAX Cordless Cat Water Fountain, 3 L
Best for
A drinking spot away from an outlet, or a home that wants water to keep flowing through short power cuts, where intermittent flow on battery is acceptable
Skip if
You want continuous flow without keeping it plugged in, need remote app control without another PETKIT Wi-Fi device.
Final verdict
Check fit before you buy either one.
Do not use a comparison to fill in a missing use area, maintenance step, care limit, warning, or merchant policy. Confirm the product role and the live listing before you buy either option.
Sources
FAQ
Can the Gardner Pet Cordless or Vortex fountain run from a power bank?
The Vortex can: the brand FAQ on its Amazon listing says the included USB cable plugs into any USB outlet, a power bank, or your own wall adapter, and no wall adapter comes in the box. The Cordless model runs from its built-in 5,000 mAh battery and charges over USB-C; its listing does not mention running it from a power bank. On battery it works in sensor mode only.
Which Gardner Pet fountain is quieter at night?
Neither has been measured here. The Vortex listing claims a pump under 30 dB, which is the seller's own figure. The Cordless listing gives no noise figure; on battery its pump runs only when the sensor detects a pet.
Do the Gardner Pet Cordless and Vortex fountains use the same filter?
Neither listing says the filters fit both models. The Vortex uses a three-layer filter (non-woven fabric, maifan stone, non-woven fabric) and ships with two. The Cordless uses its own layered filter, and its listing names both three and five filters in the box. Both listings say to replace the filter about once a month.