
Home Master HydroPerfection TMHP
Score: 92/100
Waterdrop G2
Score: 88/100Rankings

The Home Master TMHP HydroPerfection is a 9-stage under-sink reverse osmosis system that utilizes patented Full Contact Technology to remineralize water with calcium and magnesium. It features a non-electric permeate pump for a 1:1 waste ratio and an EPA-registered UV LED sterilizer to eliminate bacteria and viruses. Best suited for health-conscious households prioritizing water purity and mineral content.

The Waterdrop G2 is a compact, tankless under-sink RO system delivering 400 GPD with an exceptional 1:1 wastewater ratio. It features a space-saving design and optional remineralization, making it ideal for homes with limited cabinet space. However, it requires an electrical outlet and is restricted to indoor use.
| Attribute | ![]() | ![]() |
|---|---|---|
9 stagesbest | 7 stages | |
75 gallons per day | 400 gallons per daybest | |
99 percentbest | — | |
2.2 gallonsbest | 0 gallons | |
99 countbest | 10 count | |
12 monthsbest | — | |
| ↓ lower better | 5 inchesbest | 5.91 inches |
| ↓ lower better | 16 inches | 13.98 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF Certified, EPA Registered UV | NSF/ANSI 372, FCC |
Storage(1) | ||
Storage Tank Capacity (gallons) | 2.2 gallons | 0 gallons |
General(1) | ||
Installation Type | Under-sink | Under Sink |
Maintenance(1) | ||
Filter Lifespan (months) | 12 months | 12-24 months |
Design(2) | ||
System Width (inches) | 5.0 inches | 5.91 inches |
System Height (inches) | 16.0 inches | 13.98 inches |
Performance(4) | ||
Filtration Stages (stages) | 9 stages | 7 stages |
Daily Production Rate (gallons per day) | 75 gallons per day | 400 gallons per day |
Contaminants Removed (count) | 99 count | 10 count |
Feed Water Pressure (PSI) | 40 PSI | PSI |
Features(1) | ||
Faucet Type | Standard | Brushed Nickel |

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.
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.

“very clean water”

“Say no more. Perfect!”



Professional sources emphasize the system's efficiency and filtration effectiveness, highlighting the 400 GPD flow rate and 1:1 drain ratio as standout features.
The system maintains a 4.5-star rating, with common user praise focusing on fast water delivery, improved water quality, and the convenience of the space-saving design.