PetSafe Drinkwell 3.7 Litre Pet Fountain filter
The PetSafe Drinkwell 3.7 Litre Pet Fountain takes the PetSafe Drinkwell Replacement Carbon Filters (4-pack) (part PAC00-13906) as its filter; replace it every 1 months; Australian sellers list it from A$24.19 as of 1 August 2026. Fitment confirmed against the manufacturer's compatibility list.
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Your pet fountain
PetSafe Drinkwell 3.7 Litre Pet Fountain
Pet fountain · Drinkwell
Takes this filter
Drinkwell Replacement Carbon Filters (4-pack)
PAC00-13906
The right filter for Drinkwell 3.7 Litre Pet Fountain
PetSafe Drinkwell Replacement Carbon Filters (4-pack)
- Replace every 1 months
- Fits inside the fridge
- Fits 9 models
The flat carbon cartridge for the classic Drinkwell fountains: 1.8, 3.7 and 7.5 litre, Butterfly, Pagoda, Sedona, Seaside and Streamside. It slides into the housing behind the spout; PetSafe says change it every two to four weeks.
Reduces
- Bad tastes and odours (coconut-shell carbon)
- Hair and debris (polyester pad)
- Change
- Every 2 to 4 weeks (PetSafe)
- Pack
- 4 filters
Every number this part goes by
- Retail name:
- Drinkwell Carbon Filter
Where to buy
Every seller we track for this part, cheapest first. Genuine is the manufacturer's own part; compatible is a third-party filter made to fit. Prices are re-checked daily where the seller publishes them. Last checked 1 August 2026.
How long it lasts
Replace every 1 months.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point of the filter.
Not due yet?
This filter is due every 1 months. We'll email you when it's time — free, no spam.
Fitting it
A few minutes, no tools. Watch it done, then follow the steps.
- 1Unplug the fountain, lift the top housing off the base and tip out the water.
- 2Slide the old carbon cartridge out of the slot behind the spout.
- 3Rinse the new cartridge under the tap for a few seconds, then slide it in the same way round.
- 4Refit the housing, fill to the line and plug in. Change every 2 to 4 weeks.
About your PetSafe Drinkwell 3.7 Litre Pet Fountain
PetSafe pet fountain, pet fountain — Drinkwell. Its filter is the Drinkwell Replacement Carbon Filters (4-pack), part PAC00-13906, changed every 1 months.
Also in this pet fountain: PetSafe Drinkwell Replacement Foam Filters (2-pack) (every 2 months). Worth replacing together — one job, not two.
Checking the model number: The fountain's name (PIXI, Flower Fountain, EverSweet 3 Pro) is printed on the base or the underside label; the filter type is printed on the old filter's packaging.
Fits these models
PetSafe9 models
PetSafe's 360 page says it uses the cylindrical PAC19-14356 charcoal filter; the flat Drinkwell carbon filter page also lists 'Stainless 360'. Fit the cylindrical one unless your unit came with the flat cartridge.
Common questions
- Which filter fits the PetSafe Drinkwell 3.7 Litre Pet Fountain?
- The PetSafe Drinkwell 3.7 Litre Pet Fountain takes the PetSafe Drinkwell Replacement Carbon Filters (4-pack) (part PAC00-13906). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my PetSafe Drinkwell 3.7 Litre Pet Fountain?
- Every 1 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the PAC00-13906 in Australia?
- We track 1 Australian seller for the PAC00-13906; the lowest listed price when we last checked was A$24.19 at genuine_oem. Prices are re-checked daily and dated on this page.
- How do I fit the PAC00-13906 in a PetSafe Drinkwell 3.7 Litre Pet Fountain?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
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