
Home Master HydroPerfection TMHP
Score: 90/100
Purewell PW-OB-PH
Score: 72/100Rankings

The Home Master TMHP HydroPerfection is a high-end under-sink reverse osmosis system featuring 9-stage filtration, UV sterilization, and patented remineralization technology. Its main trade-off is the higher initial cost and the requirement for an electrical outlet for the UV unit. It is best suited for health-conscious households prioritizing water purity and mineral content.

The Purewell 6-Stage system offers high-precision 0.01-micron filtration in a durable stainless steel body, making it excellent for removing microscopic contaminants. However, it lacks TDS reduction capabilities and has a limited water capacity. It is best suited for small households or off-grid use where fine filtration is prioritized over mineral adjustment.
| Attribute | ![]() | ![]() |
|---|---|---|
1.07 GPM | 4 GPMbest | |
12 monthsbest | 6 months | |
9 stagesbest | 6 stages | |
99 %best | — | |
| ↓ lower better | 35 PSIbest | — |
| ↓ lower better | — | 0.01 micronsbest |
| ↓ lower better | 1 ratiobest | — |
5 yearsbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Health & Safety(1) | ||
Certifications | NSF, EPA | NSF/ANSI 42, 372 |
Installation & Compatibility(1) | ||
Installation Type | Under-sink | Countertop / Gravity |
Filtration & Performance(4) | ||
Filtration Technology | Reverse Osmosis | Ultra-Filtration (UF) and Carbon |
Flow Rate (GPM) | 1.07 GPM | 4.0 GPM |
Filtration Stages (stages) | 9 stages | 6 stages |
Micron Rating (microns) | microns | 0.01 microns |
Maintenance & Warranty(1) | ||
Filter Lifespan (months) | 12 months | 6 months |
Dimensions & Build(3) | ||
Height (inches) | 16.0 inches | 20.0 inches |
Width (inches) | 5.0 inches | 8.8 inches |
Depth (inches) | 15.0 inches | 8.8 inches |

Products in the top-left offer the best value (high score, low price).

Professional reviewers highlight the Home Master HydroPerfection as an exceptional under-sink reverse osmosis filter that effectively eliminates contaminants while enriching water with essential minerals. The patented Full Contact Technology is cited as a key differentiator that addresses limitations of traditional systems, such as tank degradation and slow flow rates. While experts note the setup is straightforward, they emphasize that the maintenance process requires careful attention to detail.
Everyday users consistently praise the system for its ease of setup and the high quality of the water it produces. Common themes include appreciation for the strong water pressure, fast flow rates, and the environmental benefit of the 1:1 waste ratio. Users report satisfaction with the clean taste and the peace of mind regarding bacteria and chemical removal, though some find the maintenance routine to be a minor drawback.

“very clean water”

“Say no more. Perfect!”



Professional reviews highlight the Purewell system as a well-crafted solution for fine filtration needs, praising its 0.01-micron accuracy and durable construction, while noting the inability to reduce TDS.
Users appreciate the ease of use, portability, and effective contaminant removal, though some note the slower flow rate and limited capacity as minor inconveniences.