4.97/5 reviews
CRO-800UX6
Bacteria
Chlorine
Color
Health
Mineral
Odor
PFAS (also known as “forever chemicals”) are increasingly showing up in water supplies across North America, whether you’re on a city line or a private well. The CRO-800UX6 is a high-performance, tankless reverse osmosis system that helps you feel confident in the water you drink, cook with, and serve to your family.
Space-Saving Tankless Design:
Reclaim valuable under-sink storage space.
Hospital-Grade Filtration:
99% TDS rejection removes virtually all dissolved contaminants.
Real Savings on Bottled Water:
Save hundreds of dollars annually by eliminating bottled water purchases.
Smart Leak Protection:
Advanced leak detection with automatic shut-off.
Tool-Free Filter Replacement:
Quick-change system allows filter replacement in seconds without tools.
Core Features
800 GPD High-Flow Capacity
Tankless design provides continuous filtered water on demand without storage limitations
Space-Saving Tankless Design
Compact system fits easily under sink without bulky storage tank taking up cabinet space
2:1 High-Efficiency Ratio
Advanced technology produces 2 gallons of pure water for every 1 gallon of waste, saving water and money
Quick-Change Filter System
Tool-free filter replacement in seconds with leak detection and automatic shut-off protection
Pre-Filtration with Quick-Change Cartridges
High-Capacity Reverse Osmosis Membrane
Tankless On-Demand Production
High-Efficiency Water Conservation
Leak Detection and Protection
Filter Life Monitoring
Pre-Filtration with Quick-Change Cartridges
· Water enters through quick-connect fittings for easy installation
· First stage removes sediment, dirt, and particles down to 5 microns
· Second stage activated carbon removes chlorine, taste, and odor
· Pre-filters protect RO membrane from damage and fouling
· Quick-change design allows filter replacement in seconds without tools
High-Capacity Reverse Osmosis Membrane
· Water is pressurized and forced through semi-permeable RO membrane
· Membrane pores are 0.0001 microns - 500,000 times smaller than human hair
· Removes up to 99% of dissolved solids, heavy metals, and contaminants
· 800 gallons per day capacity provides continuous filtered water on demand
· High-efficiency membrane reduces waste water production
Tankless On-Demand Production
· System produces fresh RO water instantly when faucet is opened
· No storage tank eliminates stagnant water and bacterial growth concerns
· Space-saving design fits under sink without large storage tank
· Fresh water production ensures optimal taste and quality
· Eliminates tank maintenance and replacement costs
High-Efficiency Water Conservation
· Advanced design achieves 2:1 recovery ratio (2 gallons pure : 1 gallon waste)
· Significantly better than traditional RO systems that waste 4-12 gallons per gallon produced
· Reduces water waste by up to 75% compared to conventional systems
· Lower operating costs due to reduced water consumption
· Environmentally responsible water usage
Leak Detection and Protection
· Built-in leak detector monitors system for water leaks
· Automatic shut-off valve stops water flow if leak is detected
· Audible alarm alerts user to potential problems
· Protects property from water damage
· Provides peace of mind for unattended operation
Filter Life Monitoring
· Electronic monitoring tracks filter usage and remaining life
· Visual indicators show when filter replacement is needed
· Prevents system operation with exhausted filters
· Maintains optimal water quality and system performance
· Reminder system ensures timely maintenance
Benefits
Unlimited Pure Water
Never run out of filtered water with continuous 800 GPD production capacity for large families
Maximum Convenience
Instant access to pure water without waiting for tank refill, perfect for cooking and drinking
Space Optimization
Reclaim valuable under-sink storage space with compact tankless design
Smart Protection
Advanced leak detection with automatic shut-off prevents water damage and provides peace of mind
Unlimited Pure Water
Never run out of filtered water with continuous 800 GPD production capacity for large families
Maximum Convenience
Instant access to pure water without waiting for tank refill, perfect for cooking and drinking
Space Optimization
Reclaim valuable under-sink storage space with compact tankless design
Smart Protection
Advanced leak detection with automatic shut-off prevents water damage and provides peace of mind
Water Filtration Dispenser
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Heavy Metals :
Arsenic
Barium
Zinc
Lead
Copper
Mercury, Cadmium
Iron
Chemical Products :
Chemical Contaminants
Chloramines, Ammonia, Trihalomethanes (THM), PCBs
Chlorine
Benzene
Xylene
Trichloroethylene
Pesticides, Herbicides
Pharmaceutical residues
Volatile Organic Compounds (VOCs)
Mineral Salts :
Calcium, Magnesium
Mineral Salts (TDS)
Phosphates
Chlorides, Nitrates, Sulfates
Radioactive Elements :
Radioactive Contaminants
Uranium, Radium
Debris and Sediments :
Debris & Sediment
Uranium, Radium
Tannins
Microbiological Contaminants :
Microbiological Contaminants (Pathogenic bacteria, Viruses, Protozoa )
General specifications :
Location
Whole House
Whole House
Under the Sink / Whole House
Size of Machine
Tank: 9"x48" to 14"x65" + Brine Tank
Tank: 9"x48" to 14"x65"
Compact rack system
Minimum Water Pressure
20-25 PSI (typical)
20-25 PSI (typical)
20-30 PSI (typical)
Water Waste Ratio
No waste (regeneration only)
No waste (backwash only)
No waste (UV treatment)
Filter Replacement Frequency
Resin: 10-15 years
Carbon: 6-12 months
UV Lamp: 12 months, Pre-filters: 6-12 months
Power Needed
Yes (120V for valve)
Yes (120V for valve)
Yes (for UV lamp and ballast)
Drain Needed
Yes (for regeneration)
Yes (for backwash)
No
Stages
Single Stage
Single Stage
Multi-Stage (2-3 stages)
Filter Type
Ion Exchange (Cation Resin)
Granular Activated Carbon (GAC)
Sediment + Carbon + UV Disinfection
Warranty & Certification :
Pressure Tank Warranty
Lifetime
Lifetime
12 Months
Control Valve Warranty
7 years
7 years
Not applicable
Primary Certifications
NSF/ANSI 44, 372, CSA B483.1
NSF/ANSI 42, 372
Not applicable
Water Filtration Dispenser
This is some text inside of a div block.
Heavy Metals :
Arsenic
Barium
Zinc
Iron
Mercury, Cadmium
Lead
Copper
Chemical Products :
Chloramines, Ammonia, Trihalomethanes (THM), PCBs
Chlorine
Benzene
Xylene
Trichloroethylene
Pesticides, Herbicides
Pharmaceutical residues
Volatile Organic Compounds (VOCs)
Mineral Salts :
Calcium, Magnesium
Mineral Salts (TDS)
Phosphates
Chlorides, Nitrates, Sulfates
Radoactive Elements :
Uranium, Radium
Debris and Sediments :
Debris & Sediment
Tannins
Microbiological Contaminants :
Microbiological Contaminants (Pathogenic bacteria, Viruses, Protozoa )
General specifications :
Location
Under the Sink
Under the Sink
Size of Machine
Compact tankless design
Compact under-sink unit
Minimum Water Pressure
40-60 PSI (typical for RO)
40-60 PSI (typical for RO)
Water Waste Ratio
2:1 (purified:drain)
1:1000 (99.9% recovery)
Filter Replacement Frequency
Filters: 6-12 months, Membrane: 2-3 years
Pre-filters: 6-12 months, Membrane: 2-3 years
Power Needed
Yes (for pump and controls)
Yes (for pump and controls)
Drain Needed
Yes (for concentrate)
Yes (for concentrate)
Stages
Multi-Stage (3-4 stages)
Multi-Stage (3-4 stages)
Filter Type
3-in-1 Filter + RO Membrane + Post-Filter
Sediment + Carbon + RO Membrane
Warranty & Certification :
Pressure Tank Warranty
2 years
2 years
Control Valve Warranty
Not applicable
Not applicable
Primary Certifications
NSF/ANSI 58
Not applicable
Maintenance
Replacement of both the 3-in-1 filter and the membrane when the indicator on the osmosis system flashes, which typically occurs every 3 to 6 months, depending on usage.
Technical Specifications
Max Flow Rate
0.62 gal/min
Water Pressure
15-85 psi
Operating Temp
5–38°C (41–100°F)
Tankless Design
Dimensions
Compact (no tank)
Power Requirement
Yes (120V)
Filters
Sediment, Carbon Block
Reduction
TDS, Lead, PFAS, Chlorine
Smart Filter Life Indicators
Leak Alarm
Included
Recovery Ratio
2:1 (Purified:Waste)
Max Flow Rate
0.62 gal/min
Water Pressure
15-85 psi
Operating Temp
5–38°C (41–100°F)
Tankless Design
Dimensions
Compact (no tank)
Power Requirement
Yes (120V)
Filters
Sediment, Carbon Block
Reduction
TDS, Lead, PFAS, Chlorine
Smart Filter Life Indicators
Leak Alarm
Included
Recovery Ratio
2:1 (Purified:Waste)
Benefits & Long-Term Savings
At Flöa, we believe clean water should be a whole-home standard. Here’s why this system is a smart investment.
Real Savings
Save hundreds per year by eliminating bottled water
Long-Term Protection
Guard your home from scale buildup and contaminated tap water
Eco-Friendly
Reduce plastic waste with every glass you pour
Intuitive Experience
Smart alerts, simple maintenance, no learning curve
FAQ’s
Frequently asked questions
How does the tankless design work, and will I have instant water on demand?
How much space will I save under my sink compared to traditional RO systems?
What is the water efficiency ratio, and how much water will I waste?
How often do I need to replace the filters, and how easy is the process?
Does the system have any safety features to prevent water damage?
How will I know when it's time to replace the filters?
What contaminants does the CRO-800UX6 remove from my water?
Can I install this system myself, or do I need a professional plumber?
What are the operating pressure and temperature requirements?
Does the system come with a faucet, and can I connect it to my refrigerator?
What's Included?
The System
CRO-800UX6 Tankless Reverse Osmosis Unit
The Filters
High-capacity sediment and carbon block filters RO membrane with premium contaminant reduction
Installation
Free professional installation by Flöa-certified technicians
Financing
Flexible options starting from $42/week with approved credit
