Water Filters · Head-to-head
AquaTru Carafe (AT100) vs AquaTru Classic Smart
The short answer
AquaTru Carafe (AT100) comes out ahead overall with 8.3/10 against 7.8/10 for the AquaTru Classic Smart. AquaTru Carafe (AT100) is stronger on pfas reduction evidence, value, installation & cabinet fit and health, materials & sustainability. AquaTru Classic Smart is stronger on flow & daily convenience. At current verified prices, the AquaTru Carafe (AT100) costs about $82.50 less.
- Choose the AquaTru Carafe (AT100) if: Most households that want certified PFAS reduction, purified water stored only in glass, and the lowest price among certified units, with no plumbing.
- Choose the AquaTru Classic Smart if: Families who want certified RO with the biggest purified tank and cheapest long-life filters among the certified units, and don't mind a plastic tank.
Scores by criterion
| Criterion | AquaTru Carafe (AT100) | AquaTru Classic Smart |
|---|---|---|
| PFAS reduction evidence | 9.5Its data sheet names the exact models (AT100–AT140) under IAPMO's NSF/ANSI 53 PFOA/PFOS certification, with about 99% average reduction. | 8.8Certified via the Classic/Connect data sheets per AquaTru's own page, but the Smart's model number isn't confirmed; independent PFAS non-detect was measured on the Classic. |
| Other contaminant coverage | 8.8Certified to 42/53/58/401, plus an independent Tap Score panel showing 100% removal of 8 of 10 detected contaminants. | 8.6Same 4-stage certified filtration as the Classic, about 84 contaminants. |
| Value | 8.2Cheapest certified unit at $337.50; its 600-gal filters cost about $0.29 per gallon. | 7.5$420 on Amazon (Best Buy $525); about $100 a year in filters. |
| Installation & cabinet fit | 8.5Compact and plug-in; the carafe fits in a fridge door. | 7.5No plumbing, but the bulkiest certified unit, and the waste tank is emptied by hand. |
| Flow & daily convenience | 5.58 cups take about 16.5 minutes, so expect 3–4 refill/empty cycles a day. | 7.012-cup tank, the largest certified one; a full tank takes about 16 minutes; the app tracks filter life. |
| Health, materials & sustainability | 8.0Stored water touches only glass; Tritan BPA/BPS-free housing; NSF 372. | 6.5Tritan BPA/BPS-free plastic tank; BOS measured about 1.6:1 pure-to-drain; auto-flush uses extra water. |
| Reliability & support | 6.0BOS Water reports owner complaints about leaks and support. | 6.0BOS Water notes complaints about leaks, failures and the app. |
Specifications
| Spec | AquaTru Carafe (AT100) | AquaTru Classic Smart |
|---|---|---|
| Filter type | Reverse osmosis (pre/carbon, RO membrane, VOC carbon) | 4-stage reverse osmosis |
| PFAS certification (as stated by maker) | IAPMO R&T certified to NSF/ANSI 53 for PFOA/PFOS (models AT100–AT140); also NSF/ANSI 42, 58, 372, 401 | IAPMO R&T certified to NSF/ANSI 53 for PFOA/PFOS; also NSF/ANSI 42, 58, 401 |
| Third-party certified for PFAS | Yes | Yes |
| Filtration stages | 4 | 4 |
| Filter capacity (primary cartridge) | 600 gal | 1,200 gal |
| Rated filter life | 24 months | 24 months |
| Rated flow rate | 0.03 gpm | — |
| Est. annual filter cost | 111 USD | 100 USD |
| Pure-to-drain ratio (RO) | 4:1 claimed; BOS Water measured ~1.8:1 | 4:1 claimed; BOS Water measured ~1.6:1 |
| Needs electrical outlet | Yes | Yes |
| Uses dedicated faucet (drilling may be needed) | No | No |
| Water capacity | 8 cups | 12 cups |
| Pitcher body material | Glass carafe; Tritan (BPA/BPS-free) housing | BPA-free plastic tank |
| Dispenses hot water | No | No |
| Remineralization stage included | No | No |
| UV sterilization | No | No |
AquaTru Carafe (AT100)
Pros
- Certified to NSF/ANSI 42, 53, 58, 372 and 401, including PFOA/PFOS
- Purified water touches only glass
- WaterFilterGuru's top-scoring countertop RO
- Lowest price among certified units
- Optional mineral filter adds minerals back
Cons
- Small capacity means several refill cycles a day
- Filters rated for 600 gallons, so cost per gallon is higher than the Classic
- Owners report some failures, leaks and weak support
The best-documented countertop RO we found. It has certification that names its models, strong independent test results and a glass carafe. Daily convenience is its weak spot.
Full AquaTru Carafe (AT100) review →AquaTru Classic Smart
Pros
- 12-cup purified tank for fewer refills
- 1,200-gallon, 24-month filters at about $100 a year
- Certified filtration family with PFAS reduction
- Top-rated of 18 systems by BOS Water
- App tracks filter life
Cons
- Plastic tank rather than glass
- Pricier than the Carafe, and Best Buy charges much more than Amazon
- Owners report failures, leaks and app problems
The right AquaTru for families that want fewer refills and lower filter costs. Confirm the exact model and seller when you buy.
Full AquaTru Classic Smart review →Both products are part of our guide The Best Countertop Reverse Osmosis (No Install) of 2026, where you can see every pick, how we score and current prices from each retailer.