Looking Beyond the Brio AQUUS TROE800COL Reverse Osmosis? 6 Alternatives Worth a Look
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The Brio AQUUS TROE800COL reverse osmosis system delivers 800 GPD of purified water in a compact tankless design. Its certified 4-stage filtration removes sediment, chlorine, and TDS, while its smart faucet provides real-time water quality data. You get a space-saving unit that fits under most sinks, along with an efficient 2:1 pure-to-drain ratio that reduces wastewater. These specs make it a strong choice for households needing reliable, high-flow purified water without a storage tank.
However, you might prefer different specifications for your kitchen. Some buyers prioritize alkaline filtration for improved taste, while others need UV-C purification for added safety. The Frizzlife PX600 offers certified purity with a slightly lower flow rate, and the iSpring RO800G provides a budget-friendly tankless option. We selected these 6 alternatives because their core specifications overlap with the Brio AQUUS. Each system maintains the tankless design and high GPD capacity, ensuring you have practical choices that match your specific water quality needs and spatial constraints.
Our top pick: Brio AQUUS 800 GPD Tankless RO.
Alternatives to the Brio AQUUS System
Frizzlife PX600 Tankless RO System
The Frizzlife PX600 offers 600 GPD capacity, which is lower than the Brio’s 800 GPD output. It shares the same 2:1 pure-to-drain ratio and tankless under-sink design. The PX600 is NSF certified, matching the Brio’s focus on verified purity. Its footprint is larger, measuring 8.86 inches wide and 20.1 inches tall, compared to the Brio’s compact 5-inch width. You might choose this system if you prioritize certified contaminant removal and smart monitoring over maximum flow speed. It suits kitchens where space efficiency and verified filtration matter more than the highest possible gallon output.
Frizzlife 800 GPD Alkaline RO System
This Frizzlife alkaline RO system matches the Brio’s 800 GPD capacity and 2:1 water efficiency ratio. It adds an alkaline filter to adjust pH levels, a feature the Brio does not include. The design is tankless and under-sink, but the unit is significantly larger, measuring 13.4 inches wide and 39.4 inches tall. You should pick this alternative if you need high-flow alkaline water for drinking and cooking. It is best for households that value real-time TDS monitoring and space-saving design over the smaller footprint of the Brio AQUUS.
iSpring RO800G Tankless 800 GPD
The iSpring RO800G provides 800 GPD of purified water in a tankless under-sink format, matching the Brio’s capacity. It does not list NSF certification or smart faucet features, focusing instead on practical water efficiency and high flow rates. Its dimensions are 17.8 inches wide and 17.8 inches tall, making it a wider but shorter unit than the Brio. This system is a practical option for users who do not need certified filtration or appliance integration. You should consider it if you prioritize a compact, no-frills solution for water-efficient under-sink filtration.
VIOMI V8 Pro 800 GPD RO System
The VIOMI V8 Pro delivers 800 GPD of purified water in a tankless design, matching the Brio’s output. It is certified for contaminant removal and includes real-time quality monitoring via its faucet. The unit is white and measures 5 inches wide and 12.8 inches tall, making it shorter than the Brio’s 17-inch height. You might choose this system if you need certified tankless filtration with a smaller vertical footprint. It suits buyers who prioritize high flow rates and reliable performance for families needing consistent purified water.
Frizzlife 800 GPD Alkaline Tankless RO
This Frizzlife alkaline tankless RO system offers 800 GPD capacity and a 2:1 pure-to-drain ratio, matching the Brio’s efficiency. It includes an alkaline filter to adjust water pH, which the Brio lacks. The unit is white and measures 5.3 inches wide and 15.5 inches tall, making it slightly shorter and wider than the Brio. You should pick this alternative if you need high-output alkaline water with certified filtration. It fits busy households that value real-time water quality data and space-saving design over the standard purification of the Brio AQUUS.
NU Aqua 600 GPD Tankless RO System
The NU Aqua 600 GPD tankless RO system offers lower capacity than the Brio’s 800 GPD output. It includes UV-C filtration, a feature not present in the Brio AQUUS. The design is tankless and under-sink, measuring 5.5 inches wide and 13.5 inches tall, making it shorter than the Brio. You might choose this system if you prioritize UV-C filtration and space efficiency over higher flow rates. It delivers clean water without a tank, making it ideal for compact kitchens where advanced sterilization and a small footprint are key requirements.
Quick picks
Our 7 picks
Brio AQUUS 800 GPD Tankless RO
Best for: Space-conscious homes needing certified tankless RO
- Filtration Stages
- 4
- Capacity (GPD)
- 800
- Design
- Tankless, under sink
- Pure to Drain Ratio
- 2:1
- Certification
- NSF/ANSI 42, NSF/ANSI 58
- Filtration Type
- Reverse osmosis
The Brio AQUUS is a tankless under sink reverse osmosis system with an 800 GPD capacity. It features four filtration stages certified to NSF/ANSI 42 and 58 standards. The unit includes a smart faucet with a TDS meter and dual levers for separate purified and filtered water. Its compact design saves under sink space, and it maintains a 2:1 pure-to-drain ratio for efficiency.
Pros
- 800 GPD tankless capacity
- NSF/ANSI 42 and 58 certified
- Smart faucet with TDS meter
- Dual levers for filtered and RO water
- 2:1 pure-to-drain ratio
Cons
- No UV sterilization stage
- Only two filtration certifications listed
- Requires two separate replacement filters
Good fit if
- You want a compact tankless system
- You need NSF/ANSI 58 certification
- You prefer a smart faucet with TDS monitoring
Skip if
- You require UV purification
- You need more than two certification levels
- You prefer a system with a storage tank
Verdict: Brio AQUUS 800 GPD Tankless RO suits buyers who prioritize space-saving tankless designs and real-time water quality monitoring via its smart faucet. It delivers efficient water usage and certified purification for daily drinking needs.
Frizzlife PX600 Tankless RO System
Best for: Certified purity and smart monitoring
- Filtration Stages
- 11
- Capacity (GPD)
- 600
- Design
- Tankless
- Pure to Drain Ratio
- 2:1
- Certification
- NSF/ANSI 58&53&42&372
- Filtration Type
- Reverse osmosis
The Frizzlife PX600 is a tankless reverse osmosis system with a 600 gallons per day capacity. It features 11 filtration stages and holds NSF/ANSI 58, 53, 42, and 372 certifications. The unit includes a smart LED display for real-time TDS monitoring and filter life tracking. It operates with a 2:1 pure to drain ratio. This system suits households needing high flow rates without the bulk of a storage tank.
Pros
- NSF/ANSI 58, 53, 42, and 372 certified
- 600 GPD tankless design saves space
- Smart LED display shows TDS and filter life
- 2:1 pure to drain water saving ratio
- Tool-free filter replacement in 3 seconds
Cons
- Lower 600 GPD capacity than 800 GPD competitors
- Heavier 26-pound build requires sturdy mounting
- Larger footprint than compact under-sink units
Good fit if
- You need NSF 53 certification for lead reduction
- You want real-time water quality monitoring
- You prefer a tankless system to save space
Skip if
- You require the highest 800 GPD flow rate
- You have limited under-sink depth for a 22.8-inch unit
- You prefer a system with a storage tank
Verdict: Frizzlife PX600 600 GPD Tankless RO offers certified purity and smart monitoring for families prioritizing water quality over maximum flow speed. It fits kitchens where space efficiency and verified contaminant removal matter more than the highest possible gallon output.
Frizzlife 800 GPD Alkaline RO System
Best for: High-flow alkaline water needs
- Filtration Stages
- 9
- Capacity (GPD)
- 800
- Pure to Drain Ratio
- 2:1
- Certification
- NSF/ANSI 372, FCC
- Filtration Type
- Reverse osmosis, alkaline mineral
- Installation Type
- Under sink
This tankless reverse osmosis system delivers 800 gallons per day with a 2:1 pure-to-drain ratio. It uses nine filtration stages, including an alkaline mineral post-filter to adjust pH above 7.5. A built-in pump and smart panel show real-time TDS and filter life. It saves under-sink space and reduces water waste compared to standard models.
Pros
- 800 GPD capacity with 0.56 GPM flow rate
- 9-stage filtration with alkaline mineral post-filter
- 2:1 pure-to-drain water saving ratio
- Real-time TDS display and filter life monitoring
- Tankless design with built-in pump
Cons
- 30.8 pound weight is heavy for under-sink installation
- No mention of NSF/ANSI 58 certification for contaminant reduction
- Lacks a dedicated faucet TDS sensor display separate from the main panel
Good fit if
- You need high daily output for a large household
- You want alkaline mineralized water without a storage tank
- You prefer real-time water quality monitoring via TDS reading
Skip if
- You have limited under-sink space for a 39.4 inch height unit
- You require NSF/ANSI 58 certification for contaminant reduction
- You prefer a lighter system under 20 pounds
Verdict: Frizzlife 800 GPD Alkaline RO System offers high flow and water efficiency for families needing tankless alkaline water. It suits those who value real-time TDS monitoring and space-saving design over traditional tank-based systems.
iSpring RO800G Tankless 800 GPD
Best for: water-efficient high-flow under-sink filtration
- Capacity (GPD)
- 800
- Design
- Tankless, under sink
- Pure to Drain Ratio
- 2.5:1
- Filtration Type
- Reverse osmosis
- Micron Rating
- 0.0001 microns
- Capacity
- 800 GPD
The iSpring RO800G is a tankless under-sink reverse osmosis system with an 800 GPD capacity. It features a 2.5:1 pure-to-drain ratio, which saves water compared to traditional units. The two-stage filtration uses a composite pre-filter and an 800 GPD RO membrane to remove impurities down to 0.0001 microns. This design delivers fast flow rates without a storage tank, making it suitable for high-demand households.
Pros
- Tankless design saves under-sink space
- High 800 GPD water production capacity
- Efficient 2.5:1 pure-to-drain water ratio
- Two-stage filtration removes contaminants down to 0.0001 microns
Cons
- No NSF certification listed in specifications
- Only includes a 1-year limited warranty
- Not recommended for refrigerator or ice maker connections
Good fit if
- You need high daily water volume without a storage tank
- You want to reduce wastewater during filtration
- You prefer quick-connect installation without tools
Skip if
- You require NSF/ANSI certification for your filter
- You need a system longer than 1 year warranty
- You plan to connect the filter to a refrigerator
Verdict: The iSpring RO800G Tankless RO System fits users who prioritize water efficiency and high flow rates in a compact under-sink unit. It is a practical option for those who do not need NSF certification or appliance integration.
VIOMI V8 Pro 800 GPD RO System
Best for: High-flow households needing certified tankless filtration
- Filtration Stages
- 9
- Capacity (GPD)
- 800
- Design
- Under sink
- Pure to Drain Ratio
- 3:1
- Certification
- NSF/ANSI 42, 53, 58, 372
- Filtration Type
- Reverse osmosis
The VIOMI V8 PRO is a tankless under-sink reverse osmosis system with an 800 GPD membrane. It offers nine stages of filtration and holds NSF/ANSI 42, 53, 58, and 372 certifications. The unit features a 3:1 pure-to-drain ratio and an LED smart faucet showing real-time TDS levels. It fits households needing high flow rates and certified contaminant removal under the sink.
Pros
- 800 GPD tankless membrane for fast flow
- NSF/ANSI 42, 53, 58, and 372 certified
- 9-stage filtration targets lead and PFAS
- 3:1 pure-to-drain efficiency ratio
- LED faucet displays real-time TDS and filter life
Cons
- Requires two drilled holes for the faucet and drain
- Needs a dedicated electrical outlet under the sink
- Standard tubing for fridge connection is not included
Good fit if
- You need high daily flow without a storage tank
- You want certified protection against lead and PFAS
- You prefer monitoring water quality via an LED display
Skip if
- You lack a dedicated electrical outlet under the sink
- You cannot drill two holes for the faucet and drain
- You prefer a system that includes all installation tubing
Verdict: VIOMI V8 PRO 800GPD Tankless RO suits buyers who prioritize certified contaminant removal and high flow rates. It delivers practical performance for families needing reliable, tankless purified water with real-time quality monitoring.
Frizzlife 800 GPD Alkaline Tankless RO
Best for: high-output alkaline water needs
- Filtration Stages
- 9-stage
- Capacity (GPD)
- 800 GPD
- Design
- Tankless
- Pure to Drain Ratio
- 2:1
- Installation Type
- Under sink
- Micron Rating
- 0.0001 micron
The Frizzlife PD800-N is a tankless reverse osmosis system with an 800 GPD capacity. It features a 9-stage filtration process certified to NSF/ANSI 58, 42, and 372 standards. The unit includes an alkaline remineralization stage that raises pH above 7.5. A smart LED faucet displays real-time TDS levels. It achieves a 2:1 pure-to-drain ratio. This system suits households needing high output and alkaline water.
Pros
- 800 GPD tankless design
- NSF/ANSI 58, 42, and 372 certified
- Alkaline remineralization stage
- Smart LED faucet with TDS display
- 2:1 pure-to-drain ratio
Cons
- Requires electricity for operation
- Faucet display may be unnecessary for some users
- Higher upfront cost than basic models
Good fit if
- You need high daily water output
- You prefer alkaline water
- You want real-time water quality monitoring
Skip if
- You have no under-sink electrical outlet
- You prefer a traditional storage tank
- You want a basic filtration system
Verdict: Frizzlife 800GPD Alkaline Tankless RO delivers high-capacity, certified filtration with alkaline benefits. It fits busy households that value real-time water quality data and space-saving design.
NU Aqua 600 GPD Tankless RO System
Best for: UV filtration and tankless efficiency
- Filtration Stages
- 4
- Capacity (GPD)
- 600
- Design
- Tankless
- Pure to Drain Ratio
- 2:1
- Filtration Type
- Reverse osmosis, UV
- Installation Type
- Under sink
This NU Aqua unit combines reverse osmosis with UV-C filtration in a tankless design. It processes 600 gallons per day with a 2:1 pure-to-waste ratio. The slim profile fits under most sinks. You get a color-changing LED faucet that signals filter changes. It is a solid choice if you want added UV protection and efficient water use without a storage tank.
Pros
- 4-stage filtration includes UV-C treatment
- 600 GPD tankless capacity
- 2:1 pure to waste water ratio
- Slim 5.5-inch width fits under sinks
- LED faucet indicates filter status
Cons
- Lower 600 GPD output than many competitors
- Heavier 25-pound build requires sturdy mounting
- No alkaline remineralization stage included
Good fit if
- You want UV-C protection for extra safety
- You need a slim tankless unit for tight spaces
- You prefer a 2:1 water efficiency ratio
Skip if
- You need higher than 600 GPD flow rates
- You want an alkaline remineralization stage
- You prefer a system with a storage tank
Verdict: NU Aqua 600 GPD Tankless UV RO suits buyers who prioritize UV-C filtration and space efficiency over higher flow rates. It delivers clean water without a tank, making it ideal for compact kitchens.
Specifications side by side
| Spec | Brio AQUUS 800 GPD Tankless RO | Frizzlife PX600 Tankless RO System | Frizzlife 800 GPD Alkaline RO System | iSpring RO800G Tankless 800 GPD | VIOMI V8 Pro 800 GPD RO System | Frizzlife 800 GPD Alkaline Tankless RO | NU Aqua 600 GPD Tankless RO System |
|---|---|---|---|---|---|---|---|
| Filtration Stages | 4 | 11 | 9 | not specified | 9 | 9-stage | 4 |
| Capacity (GPD) | 800 | 600 | 800 | 800 | 800 | 800 GPD | 600 |
| Design | Tankless, under sink | Tankless | not specified | Tankless, under sink | Under sink | Tankless | Tankless |
| Pure to Drain Ratio | 2:1 | 2:1 | 2:1 | 2.5:1 | 3:1 | 2:1 | 2:1 |
| Certification | NSF/ANSI 42, NSF/ANSI 58 | NSF/ANSI 58&53&42&372 | NSF/ANSI 372, FCC | not specified | NSF/ANSI 42, 53, 58, 372 | not specified | not specified |
| Filtration Type | Reverse osmosis | Reverse osmosis | Reverse osmosis, alkaline mineral | Reverse osmosis | Reverse osmosis | not specified | Reverse osmosis, UV |
| Contaminants Removed | Sediment, chlorine, TDS | not specified | not specified | not specified | not specified | not specified | not specified |
| Installation Type | not specified | Under sink | Under sink | not specified | Under sink | Under sink | Under sink |
| Micron Rating | 0.0001 microns | 0.0001 | 0.0001 | 0.0001 microns | not specified | 0.0001 micron | not specified |
| Capacity | 800 GPD | 600 GPD | 800 GPD | 800 GPD | 800 GPD | 800 GPD | 600 GPD |
| Features | not specified | not specified | Alkaline Filter | not specified | not specified | Alkaline Filter | UV Filtration |
| Color | Black | Black | PD800-TAM4 Alkaline Reverse Osmosis System | Gray RO | White | 800GPD Alkaline Reverse Osmosis Water Filter | White |
| Dimensions | 18 × 5 × 17 inches | 22.8 × 8.86 × 20.1 inches | 37.3 × 13.4 × 39.4 inches | 6.5 × 17.8 × 17.8 inches | 16.3 × 5 × 12.8 inches | 14.5 × 5.3 × 15.5 inches | 15.5 × 5.5 × 13.5 inches |
| Weight | 32 pounds | 26 pounds | 30.8 pounds | not specified | 29 pounds | not specified | 25 pounds |
| Model | TROE800COL | PX600-Black | 800 GPD Mineralized RO | RO800G | Vortex 8 PRO | PD800-N | KF-600GPD-UV-2FTL |
| Size | not specified | not specified | 800 GPD | 800 GPD | V8 Pro 800GPD | not specified | 4 Stage UV Tankless RO |
Frequently asked questions
Which Brio AQUUS alternative offers the most compact tankless design?
The Brio AQUUS 800 GPD Tankless RO is the most compact option. It measures 5 inches wide, 17 inches high, and 18 inches long. This slim profile fits easily under most sinks. It delivers 800 GPD in a 4-stage filtration system. The black finish adds a modern look to your kitchen cabinetry.
Is there a certified tankless RO system with lower capacity?
Yes, the Frizzlife PX600 is NSF certified and offers 600 GPD. It is slightly larger than the Brio AQUUS, measuring 8.86 inches wide and 22.8 inches long. It maintains a 2:1 pure-to-drain ratio. This system prioritizes verified contaminant removal over maximum flow speed. It is ideal for space-conscious homes needing certified purity.
Which alternative provides alkaline water benefits in a tankless unit?
The Frizzlife 800 GPD Alkaline RO System adds an alkaline filter to its purification process. It delivers 800 GPD with a 2:1 pure-to-drain ratio. This model is larger, measuring 13.4 inches wide and 39.4 inches high. It suits buyers who value real-time TDS monitoring and space-saving design. The alkaline feature enhances water taste.
Does any alternative use UV filtration for added safety?
The NU Aqua 600 GPD Tankless RO System includes UV-C filtration. It uses a 4-stage process to ensure clean water without a tank. The unit measures 5.5 inches wide and 13.5 inches high. It is designed for compact kitchens. This system prioritizes UV filtration and space efficiency over higher flow rates.
Which system has the smallest footprint for under-sink installation?
The VIOMI V8 Pro 800 GPD RO System has a very small footprint. It measures only 5 inches wide, 12.8 inches high, and 16.3 inches long. It weighs 29 pounds and features a white finish. This compact design fits easily under most sinks. It delivers high flow rates with certified contaminant removal.
Are there tankless options with a 2:1 water efficiency ratio?
Several alternatives offer a 2:1 pure-to-drain ratio. The Frizzlife PX600, Frizzlife 800 GPD Alkaline, and Frizzlife 800 GPD Alkaline Tankless RO all share this efficiency. This ratio means for every two gallons of purified water, one gallon is drained. It helps conserve water while maintaining high output rates for daily use.
Which alternative is best for high-flow alkaline water needs?
The Frizzlife 800GPD Alkaline Tankless RO is best for high-output alkaline needs. It delivers 800 GPD with certified filtration and alkaline benefits. The unit measures 5.3 inches wide and 15.5 inches high. It fits busy households that value real-time water quality data. This space-saving design provides reliable purified water for families.