10 Best Whole House Reverse Osmosis System of September 2025

• 1st stage: Premium Quick-Connect 5 micron sediment filter. Dust, dirt, silt, sand, rust and scale particles are trapped here in a filter which also extends the life of the system.
• 2nd stage: Premium 10" GAC Granular Activated Carbon filter removes chlorine, radon, VOCs (volatile organic compounds) and other common chemicals. This filter also removes cloudiness, offensive odors, colors and unpleasant tastes.
• 3rd stage: 10" Premium CTO Carbon Block filter removes chlorine, VOCs (volatile organic compounds, including insecticides, pesticides and industrial solvent). Taste improvement. Build in USA.
• Connection: 3/4" thread.
• included 2 extra sets of filters as a replacement. You need to change filters every 4-6 months.

Reverse Osmosis Revolution

• Whole House Water Filter: Reduce harmful contaminants and dangerous heavy metals from your entire home’s water with Express Water’s 3 Stage Heavy Metal Water Filtration System. Heavy Metal Water Filter: Drink the healthiest water on Earth as your home water filter reduces over 80 different contaminants from your water including chlorine, iron, lead, mercury, and more.
• Express Water’s water filtration systems are ready to install with 1” inch standard connections. Easy to Replace Water Filter Cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running.
• Durable Whole House Water Filter: Express Water Whole Home Water Filtration Systems are constructed with standing stainless-steel frames for long term durability and quality.
• On Demand Support: Support from experts who can answer any of your questions about your new home water filter. Quality Guaranteed: Rest easy with our 1-year warranty on all Express Water Whole Home Water Systems
• Please be informed - this whole house system is installed at the main water supply line for the purpose of treating all incoming water in your home or business. Unlike reverse osmosis systems, this system will NOT reduce Total Dissolved Solids (TDS). If you are searching for a filter that removes TDS, we recommend our Express Water Reverse Osmosis systems.

Express Water

• SUPERIOR 5-STAGE FILTRATION: 1st Stage PP Sediment Filter (removes larger particles like rust, sand and dirt. ) 2nd Stage GAC Filter (effectively adsorb free chlorine, humus, disinfection byproducts, smells, discoloration. ) 3rd Stage Carbon Block Filter (removes any residual chlorine, tastes & odors, also extending membrane's life. ) 4th Stage Dual-Flow RO Membrane (removes bacteria, viruses, heavy metals, pesticide residues & other harmful substances. ) 5th Stage Post Carbon filter (removes chlorine, tastes, and odors to improve the quality of your drinking water. )
• GREAT CAPACITY: Advanced Dual-Flow 500GPD membrane saves 60% of water, with LOW WASTE 1: 1 drain to clean water ratio. Great for light commercial in Restaurants, Salons, Labs, and Offices all benefit in their ways from high-quality RO water.
• HIGH EFFICIENCY BOOSTER PUMP: No worries for low water pressure. Built in booster pump increases the production of purified water by raising the water pressure and maximizes RO production rate to the optimal level for the reverse osmosis process.Minimum feed water pressure (psi):35
• FEATURES: Come with Sliver Chrome drinking water faucet with 360° free swivel and Easy to Read Water Pressure Gauge.
• EASY-TO-INSTALL AND REPLACE FILTER: Typically, in a couple of hours with industry-leading help just a phone call away with well-organized instructions and videos. Clear see-through 1st stage housing makes filter inspection a snap.
• 100% SATISFIED CUSTOMERS: Extended manufacturer with lifetime personalized support. 123filter DOT com / support | 678-261-7611 | 3020 Trotters PKWY, Alpharetta, GA 30004

iSpring

• CLEARLY GREAT WATER: This whole house water filter reduces sediment build-up, chlorine taste and odor as well as scale – helping to increase the life of hot water heaters and appliances (dishwashers, clothes washers, etc.).
• EASY TO REPLACE: Sanitary Quick Change (SQC) design allows for fast and easy change-outs of the 3M Aqua-Pure AP917HD-S Replacement Water Filter Cartridge without having to contact the filter media or the need for a filter wrench.
• 100,000 GALLON CAPACITY: Replacement cartridge has an activated carbon filter with nominal heavy duty particulate reduction rating of 5 micronss and a 100,000 gallon capacity at high flow rates of 10 gpm and even at intermittent peak flow rates of 20 gpm.
• FLOW RATE: 1” inlet and outlet connections to help a plumbing professional with easy installation and peak flow rates up to 20 gpm to meet the water pressure demands of most homes.
• CORROSION RESISTANT: 304 stainless steel head can be installed on existing copper pipes in the home. It consists of a corrosion resistant material that provides long service life. Fitting Type: NPT Female
• NSF STANDARD 42 CERTIFIED: Tested by one of the world’s most respected independent certification organizations that helps protect the world’s food, water, consumer product and environment.
• IDEAL FOR larger homes and is effective with both chlorinated (municipal) and non-chlorinated (well water) systems.

3M Aqua-Pure

• High capacity Reverse Osmosis systems removes up to 99% of over 1, 000 contaminants and hardness, including lead (removes up to 98% of lead), chlorine, fluoride, arsenic, asbestos, calcium, sodium and more.
• Freestanding Stainless Steel Frame and Metal hanging bracket. Makes your installation and filter changes easier while adding a protective buffer for your system
• Super-efficient RO membranes combine to provide up to 300 gallons of purified reverse osmosis water daily. Rejects wide spectrum of impurities down to .0001 micron.
• Built in booster pump increases the production of purified water by raising the water pressure. Compatible with 11 or 20 gallon iSpring storage tank. TANK NOT INCLUDED.
• Great for light commercial use in Restaurants, salons, labs, and offices all benefit in their own ways from high quality RO water.

iSpring

• POWERFUL & RELIABLE: 55W Whole House 12 GPM UV Ultraviolet Sterilizer Water Filtration Unit. ++ SAFE: This system does not use any chemical products to treat water. STRONG: Stainless Steel Unit Capacity: 12 GPM Inlet/Outlet: 3/4" MNTP 36" UV lamp: 55W 110V COMPLETE SYSTEM with Mounting Clamps, Glass Tube and UV Bulb LONG LASTING: UV Bulb Change Times: 1 Year
• 2 Heavy-duty Construction 10" Big Blue Whole House with US Standard NPT 3/4" Brass Inlet / Outlet. Complete water filtration system. Includes (20 micron) String Wound Sediment, (5 micron) Carbon Block and 1 Micron Melt Blown Sediment cartridges. Excellent to remove Sediment, Chlorine, Odors and many other chemicals and contaminants.
• STAGE 1: 20 Micron String Wound Sediment Filter. For particles such as sand, dirt, silt, and rust. To remove these particles, it allows a better performance for the following Carbon Block filter. The String Wound Sediment filter offers a longer cartridge life, higher flow rate, greater dirt holding capacity, lower pressure drop and more efficient when compared to other sediment filters. STAGE 2: 5 Micron Carbon Block Filter. Removes chlorine, bad taste, odor, organic solvents and chemicals.
• STAGE 3: 1 Micron Sediment Filter. For particles such as sand, dirt, silt, and rust. Precise filtration down to 1 micron. STAGE 4: 12 GPM UV Ultraviolet Sterilizer.
• 1 year replacement filter package for this system is Amazon item B07KBDT21Q

BLUONICS

• Advanced Technology-Removes up to 99% of contaminants including arsenic, chlorine, lead, fluoride,mercury,cadmium,odor,heavy metals, and 1000+ contaminants. 0.0001 micron.Experience fresher healthier baby formula,tea and coffee, better tasting foods and crystal clearer ice cubes,great tasting even better than most bottled water
• Regular Ro system produces slightly acidic water pH at 5-6.5. This unit includes an additional 6th stage-Alkaline Remineralization filter which adjust PH of pure water to 7.5-8.5 ,restores healthy minerals (includes natural calcium, magnesium,sodium,potassium ions) back to pure water and produces a balanced alkalinity natural taste water
• Premium quality components ensure highest reliability and low maintenance for many years to come. All tube,quick push fittings, storage tank,Ro membrane is NSF certificated,to provide healthy, safe and pure water. LEAD FREE deluxe kitchen sink faucet as last pure water guarantee in your home
• System Capacity 75 gallons per day @ 60 psi.Tank Capacity 2.8 gallon,Fits most under sink cabinets,smart size for ensure you get pure water every time.Pipe Size:1/4 inches and 3/8 inches.The Ratio of pure water and waste water is 1:2.Feed Water Condition:Water Pressure: 40 - 100 psi,Temperate:40-110°F/5-45°C,Ph:3.0 -11.0,Max TDS :2000 ppm tap water or well water
• System comes with high quality quick connect fittings, color coded tubing, and videos for an easy DIY experience,Don’t waste money for professional installation ,you can understand everything about your system and install it with our clear, well-organized instructions in a couple of hours.1 year manufacturer warranty,no need registration

Geekpure

• Reverse osmosis drinking water purification system for residential and light commercial applications
• Sediment and compressed carbon block pre-filtration removes tiny particles like rust, silt, taste and odor-causing chemicals like chlorine, chloramine and rotten-egg odors.
• Standard 1812 Volume Thin Film Composite reverse osmosis membrans removes up to 98.5% of water contaminants like nitrate, TDS, fluoride, lead, sodium and mercury.
• Ideal for residential drinking water use, medical offices, laboratories, schools, aquariums and hydroponic growing operations. Automated water pressure sensors and booster pumps keep system functioning at maximum capacity.
• Please note this is not a complete whole house reverse osmosis system. Atmospheric tanks, jet pumps and other equipment need to be purchased separately for turning this system into a part of whole house RO setup. Read our whole house RO setup blog and contact us for more information before purchasing for whole house applications.

WECO

• Supreme quality: built with super long-lasting 100% US made filters, RO-Hi is the most durable system in the industry that lasts for decades. System is designed, engineered and assembled in USA to guarantee water safety & your health.
• High performance: Tested and certified by WQA to remove up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals and 1000+ contaminants. Provides unlimited ultra-fresh, clean, great tasting water right at home
• Quick dispense: big 3/8” fast-flow output design increases the flow rate of water from tank to faucet. The higher water flow will allow you to fill up a glass or pitcher of water much faster. Reduces wait time when drawing and filling large pots of water for making soups or beverages.
• Equipped with premium faucet & parts: comes with 100% metal, 100% lead-free luxury designer faucet, plus JG food grade tubing to provide safe, contamination-free pure water. The original, top-notch jg quick connect fittings for easy and secure leak-seal.
• Lifetime support: provides you the ultimate satisfaction and peace of mind with our lifetime support and 2 year manufacturer warranty with registration. Your health will never be compromised with a RO-Hi system.

APEC Water Systems

• Advanced Technology-Removes up to 99% of contaminants including arsenic, chlorine, lead, fluoride,mercury,cadmium,odor,heavy metals, and 1000+ contaminants. 0.0001 micron.Experience fresher healthier baby formula,tea and coffee, better tasting foods and crystal clearer ice cubes,great tasting even better than most bottled water
• This unit includes an additional 6th stage-Ultraviolet Water Filter-making ultra pure water for drinking,Last 9000 hours min,Works night and day, 24/7, consistently keeps water safe.100-140 v / 50-60 Hz,US plug
• Premium quality components ensure highest reliability and low maintenance for many years to come. All tube,quick push fittings, storage tank,Ro membrane is NSF certificated,to provide healthy, safe and pure water. LEAD FREE deluxe kitchen sink faucet as last pure water guarantee in your home
• Premium quality components ensure highest reliability and low maintenance for many years to come. All tube,quick push fittings, storage tank,Ro membrane is NSF certificated,to provide healthy, safe and pure water. LEAD FREE deluxe kitchen sink faucet as last pure water guarantee in your home
• System comes with high quality quick connect fittings, color coded tubing, and videos for an easy DIY experience,Don’t waste money for professional installation ,you can understand everything about your system and install it with our clear, well-organized instructions in a couple of hours.1 year manufacturer warranty,no need registration

Geekpure