Aquasana SmartFlow RO
#13 in With tankFull review
For a buyer who wants the broadest certification and mineralized water in a tank system. The running cost is high, so budget buyers should look elsewhere.
Aquasana $479.99$479.99
The Aquasana SmartFlow RO is the better under-sink reverse osmosis system overall, rated 2.8 to 2.6. The Aquasana SmartFlow RO leads on certification. The Home Master TMHP HydroPerfection wins on warranty and filter cost. The Aquasana SmartFlow RO costs $19.96 less ($479.99 vs $499.95).
Home Master TMHP HydroPerfection
#14 in With tankFull review
For well water homes that want UV and an iron prefilter with low water waste. On treated city water the cheaper TMAFC-ERP does the same job.
Amazon $502.06 Home Master $499.95$499.95
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Aquasana SmartFlow RO for certification (certified to NSF/ANSI 58 vs no third-party certification).
- Choose the Home Master TMHP HydroPerfection for warranty (5-year warranty vs 2-year warranty) and filter cost ($163 a year in replacement filters vs $310 a year in replacement filters).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every with tank under-sink reverse osmosis system; a clear win is highlighted. How we rank explains each one.
| Factor weight | Aquasana SmartFlow RO | Home Master TMHP HydroPerfection |
|---|---|---|
| Overall rating | 2.8/5 | 2.6/5 |
| Certification 25% | 100 certified to NSF/ANSI 58 | 0 no third-party certification |
| Filter cost 20% | 0 $310 a year in replacement filters | 27 $163 a year in replacement filters |
| Water wasted 15% | 50 drain ratio not published (neutral score used) | 82 1:1 pure to drain |
| Output 10% | 3 51.4 gallons a day | 0 50 gallons a day |
| Price 15% | 3 $479.99 | 0 $499.95 |
| Warranty 15% | 25 2-year warranty | 100 5-year warranty |
Independent measurements
Aquasana SmartFlow RO
| Tested by | TDS reduction | Output | Pure to drain | Conditions |
|---|---|---|---|---|
| Water Filter Guru | 95.4 % | - | - | TDS before and after filtration on the reviewer’s tap water. |
| Water Filter Guru | - | 44.6 gpd | - | At 51 psi and 59.2 F. |
| Water Filter Guru | - | - | 0.5 :1 | 64 oz test gave 1:2; a 12 oz test gave 1:2.25. |
Home Master TMHP HydroPerfection
No independent test published yet.
Specifications
| Aquasana SmartFlow RO | Home Master TMHP HydroPerfection | |
|---|---|---|
| Filtration | ||
| Output | 51.4 gallons a day | 50 gallons a day |
| Pure to drain | - | 1:1 |
| Stages | 4 | 9 |
| Remineralization | Yes | Yes |
| NSF/ANSI 58 | Yes | No |
| Other certifications | NSF/ANSI 42, 53, 372, 401 | - |
| Replacement filters | $310 a year | $163 a year |
| Build | ||
| Tank | 3.2 gal | 3.2 gal |
| Booster pump | No | No |
| Smart faucet | No | No |
| Warranty | 2 years | 5 years |
| Released | 2023 | - |