Waterdrop WD-AS08 Filtration System Review
Our verdict
The WD-AS08 is an under-sink activated carbon filter with an 8,000-gallon capacity and NSF/ANSI approved components, priced at $81.99. It earns a 4.4-star average from 262 reviews, a small but positive sample for a system positioned as a step up from entry-level inline filters.
Check price on AmazonBest for
Buyers wanting a compact under-sink carbon filter with a long service life and a modest budget, where the goal is taste and odor reduction from municipal water.
Skip if
You need filtration that addresses dissolved solids, heavy metals, or other contaminants beyond the scope of activated carbon technology.
- Purification Activated Carbon
- Capacity / life 8000 Gallons
- Install Under-Sink
- Material Nsf/Ansi Approved Components
- Dimensions 4.09 X 4.09 X 12 In
- Weight 3.72 lb
- Priced 73% below the category median ($307.99 across 65 tracked models)
- Weight of 3.72 lb - lighter than 89% of the 65 models we track
Our scorecard
-
Owner rating4.4/5
4.4 average across 262 owner ratings
-
Popularity2.5/5
262 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other water filtration: replacement filters, under-sink and reverse osmosis systems, filter pitchers, water dispensers, coolers, faucet filters and softeners we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The WD-AS08 uses activated carbon with NSF/ANSI approved housing components. At 8,000 gallons of rated capacity, it offers a meaningfully longer service interval than many carbon filters at this price point, reducing the frequency and cost of replacement cartridges over time.
The unit is compact, measuring 4.09 x 4.09 x 12 inches and weighing 3.72 pounds. That makes it easy to position under most sinks even where cabinet space is limited. Install type is under-sink. No power is required. The system uses Waterdrop's familiar slim-canister format.
With 262 reviews at 4.4 stars, the WD-AS08 has a narrower feedback base than some Waterdrop stablemates like the WD-10UA-UF, but the consistent rating is reassuring. At $81.99 it occupies a clear middle tier between the $63.99 WD-10UA-UF and the $139.99 WD-TSU, offering more capacity than the entry model for a modest price premium.
Pros
- 8,000-gallon filter life reduces ongoing replacement costs
- NSF/ANSI approved components
- Very compact at 4.09 x 4.09 x 12 inches and 3.72 pounds
- 4.4-star average, consistent with the Waterdrop lineup
- No power required
Cons
- Activated carbon only, no RO or UF membrane for dissolved solids or bacteria
- 262 reviews is a smaller feedback base than some comparable products
- No third-party certification for specific contaminant reduction claims
- Higher price than the WD-10UA-UF for the same purification method
Specifications
| Purification | Activated Carbon |
|---|---|
| Capacity / life | 8000 Gallons |
| Install | Under-Sink |
| Material | Nsf/Ansi Approved Components |
| Dimensions | 4.09 X 4.09 X 12 In |
| Weight | 3.72 lb |
Performance notes
The WD-AS08 uses activated carbon filtration with NSF/ANSI approved components. Activated carbon is designed to reduce chlorine, chloramines, VOCs, and related taste and odor issues. Filter capacity is 8,000 gallons. Dimensions are 4.09 x 4.09 x 12 inches, weight is 3.72 pounds. Install type is under-sink. No power source is required. No independent certification for specific contaminant reduction is listed.
What buyers say
The 4.4-star rating from 262 buyers is a positive but modest signal. The review count is sufficient to suggest reliable average performance, though buyers with specific water quality concerns may want to seek a product with a larger or more detailed review base.
More from Waterdrop
Similar water filtration: replacement filters, under-sink and reverse osmosis systems, filter pitchers, water dispensers, coolers, faucet filters and softeners to consider
Frequently asked questions
How does the WD-AS08 compare to the Waterdrop WD-10UA-UF?
Both use activated carbon and NSF/ANSI approved components. The WD-10UA-UF is rated for 8,000 gallons as well but carries nearly 5,000 reviews at a lower price of $63.99. The WD-AS08 is slightly larger in capacity per dollar terms and uses a different canister form factor. If price is the priority, the WD-10UA-UF has a much larger feedback base. If you prefer the WD-AS08's specific form factor or filter design, the performance baseline should be comparable.
Does this filter require a separate filtered-water faucet?
Under-sink activated carbon filters in this slim-canister format typically connect inline between the cold-water shutoff valve and the existing faucet, so a separate dedicated tap is usually not needed. Verify the specific installation requirements in the included documentation, as connection type can vary between models.