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10 Best Whole House Water Filtration Systems 2025 in the United States
#1
Winner
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
The Aquasure Harmony Series 48,000 Grains Whole House Water Softener is designed to meet the needs of homes with 3-4 bathrooms, making it ideal for medium to large households. One of its major strengths is its ability to treat hard water effectively by removing harmful minerals like calcium and magnesium, which can irritate skin and clog plumbing. Additionally, the triple purpose sediment/carbon/zinc pre-filter significantly enhances water quality by eliminating up to 99% of common contaminants, including chlorine, VOCs, and heavy metals. This not only helps protect your health but also prolongs the lifespan of your appliances, reducing maintenance costs over time.
Rating
10.0
Chosen by1,327
Type of Contaminants
Filter Lifespan and Maintenance
System Size and Installation
Most important from
2832 reviews
#2
iSpring Whole House Water Filter System, Reduces PFOA/PFOS, PFAS, Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
The iSpring Whole House Water Filter System (WGB32B-KDS) offers robust protection against various contaminants, making it a solid choice for ensuring cleaner water throughout your home. With its three-stage filtration process, it effectively reduces scale, PFAS, lead, chlorine, chloramine, hydrogen sulfide, and heavy metals. The system boasts a high flow rate of up to 15 gallons per minute, which ensures minimal impact on your water pressure. It also features a reputable build, meeting NSF/ANSI standards, and has a filter lifespan capable of handling up to 250,000 gallons of water per year for a household of four, which is quite impressive.
Rating
10.0
Type of Contaminants
Flow Rate
Filter Lifespan and Maintenance
Most important from
3538 reviews
#3
iSpring Whole House Water Filter System, Highly Reduces Sediment, Taste, Odor, and up to 99% Chlorine, 3-Stage w/ 20-Inch Sediment and Carbon Block Filters, Model: WGB32B, 1" Inlet/Outlet
The iSpring Whole House Water Filter System (Model: WGB32B) effectively reduces sediment, taste, odor, and up to 99% of chlorine, making it a strong option for families looking to improve their home's water quality. This system stands out with its three-stage filtration, which includes a 5-micron sediment filter and two carbon block filters made from high-quality coconut shell carbon. These filters have a long lifespan, with a capacity of handling up to 100,000 gallons of water, which translates to about one year of use for an average household.
Rating
9.8
Type of Contaminants
Filter Lifespan and Maintenance
System Size and Installation
Most important from
3538 reviews
Top 10 Best Whole House Water Filtration Systems 2025 in the United States
#1
Winner
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
Type of Contaminants: calcium, magnesium, chlorine, VOCs, heavy metals
Flow Rate: 12 Gallons Per Minute
System Size and Installation: 12 x 12 x 56 inches, 120 pounds
Additional Features: Programmable, automatic digital control head
Chosen by 1327 this week
iSpring Whole House Water Filter System, Reduces PFOA/PFOS, PFAS, Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
iSpring Whole House Water Filter System, Reduces PFOA/PFOS, PFAS, Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
Type of Contaminants: scale, PFAS, lead, chlorine, chloramine
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 250,000 gallons/year
System Size and Installation: 24.5 x 8 x 28 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: anti-scale, 1-inch NPT, 1-year warranty
iSpring Whole House Water Filter System, Highly Reduces Sediment, Taste, Odor, and up to 99% Chlorine, 3-Stage w/ 20-Inch Sediment and Carbon Block Filters, Model: WGB32B, 1" Inlet/Outlet
iSpring Whole House Water Filter System, Highly Reduces Sediment, Taste, Odor, and up to 99% Chlorine, 3-Stage w/ 20-Inch Sediment and Carbon Block Filters, Model: WGB32B, 1" Inlet/Outlet
Type of Contaminants: sediment, taste, odor, chlorine
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 100,000 gallons or one year
System Size and Installation: 24.25 x 7.75 x 27.75 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: Tankless, 1-inch NPT connections
iSpring Whole House Water Filter System, Reduces Iron, Manganese, Chlorine, Sediment, Taste, and Odor, 3-Stage Iron Filter Whole House, Model: WGB32BM
iSpring Whole House Water Filter System, Reduces Iron, Manganese, Chlorine, Sediment, Taste, and Odor, 3-Stage Iron Filter Whole House, Model: WGB32BM
Type of Contaminants: iron, manganese, chlorine, sediment, rust
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 100,000 gallons, about a year
System Size and Installation: 24.25 x 7.75 x 27.75 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: Tankless, 1-year warranty, lifetime support
Aquasana Whole House Water Filter System | 1,000,000 Gallons | Salt-Free Softener Alternative | UV, Carbon & KDF | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Cysts & Scale | EQ-1000-AST-UV
Aquasana Whole House Water Filter System | 1,000,000 Gallons | Salt-Free Softener Alternative | UV, Carbon & KDF | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Cysts & Scale | EQ-1000-AST-UV
Type of Contaminants: Chlorine, organic chemicals, pesticides, herbicides
Flow Rate: 14.6 Gallons Per Minute
Filter Lifespan and Maintenance: 1 million gallons or 10 years
System Size and Installation: 46"L x 9"W x 69"H, 86.1 pounds
Additional Features: Chlorine Reduction, UV Disinfection, salt-free
Related Products
Up to 19% off
Whole House Water Filter System| ULTIMATE PROTECTION | 3 Stage Water Purifier Whole Home, Top-Tier Heavy Metal + Anti-Scale Filters, High Reduction in Scale, Chloramine, Chlorine, PFAs, Lead, Arsenic
Whole House Water Filter System| ULTIMATE PROTECTION | 3 Stage Water Purifier Whole Home, Top-Tier Heavy Metal + Anti-Scale Filters, High Reduction in Scale, Chloramine, Chlorine, PFAs, Lead, Arsenic
Type of Contaminants: lead, arsenic, chlorine, chloramine
Flow Rate: 17 GPM
Filter Lifespan and Maintenance: 6-12 months or 100,000 gallons
System Size and Installation: 29x8.5x30 inches; 63 lbs, freestanding
Additional Features: anti-scale, pressure gauges, release buttons
3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty, 100,000 Gallon
3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty, 100,000 Gallon
Type of Contaminants: sediment, chlorine taste, odor, scale
Flow Rate: 20 Gallons Per Minute
Filter Lifespan and Maintenance: 100,000 gallons, SQC design
System Size and Installation: 4.5 x 4.5 x 25.2 inches
Additional Features: Heavy Duty
Express Water Whole House Heavy Metal Water Filter Set – 3 Stage Water Filtration Replacement Kit – Sediment, Carbon Block, KDF High Capacity Cartridge Filters – 5 Micron Water Filter 4.5” x 20” inch
Express Water Whole House Heavy Metal Water Filter Set – 3 Stage Water Filtration Replacement Kit – Sediment, Carbon Block, KDF High Capacity Cartridge Filters – 5 Micron Water Filter 4.5” x 20” inch
Type of Contaminants: heavy metals, iron, lead, nickel, chromium
Filter Lifespan and Maintenance: up to 100,000 gallons, easy maintenance
System Size and Installation: 4.5” x 20”, 17.5 pounds, easy installation
Certifications and Standards: ANSI, WQA, NSF, Ro
Additional Features: does not reduce Total Dissolved Solids
#10
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Buying Guide for the Best Whole House Water Filtration Systems
Choosing the right whole-house water filtration system is crucial for ensuring that your entire household has access to clean, safe, and great-tasting water. A whole-house water filtration system is installed at the point where the main water line enters your home, ensuring that all the water you use for drinking, cooking, bathing, and cleaning is filtered. To make an informed decision, you need to understand the key specifications and how they relate to your specific needs. Here are the main factors to consider when selecting a whole-house water filtration system.Type of ContaminantsDifferent water filtration systems are designed to remove different types of contaminants, such as chlorine, sediment, heavy metals, bacteria, and viruses. It's important to know what contaminants are present in your water supply. You can get your water tested to identify these contaminants. Once you know what needs to be removed, you can choose a system that targets those specific impurities. For example, if your water has high levels of chlorine, a system with activated carbon filters would be effective.
Flow RateThe flow rate of a water filtration system is measured in gallons per minute (GPM) and indicates how much water can be filtered at a time. This is important because it affects the water pressure in your home. A higher flow rate is necessary for larger households with multiple bathrooms and high water usage. For a small household, a flow rate of 10-15 GPM might be sufficient, while larger homes may require 20-25 GPM or more to ensure adequate water pressure.
Filter Lifespan and MaintenanceThe lifespan of the filters in a water filtration system varies depending on the type of filter and the amount of water used. Some filters need to be replaced every few months, while others can last for several years. It's important to consider how often you'll need to replace the filters and the cost associated with it. Systems with longer-lasting filters may have a higher upfront cost but can be more economical in the long run. Choose a system with a maintenance schedule that fits your lifestyle and budget.
System Size and InstallationThe size of the water filtration system and the complexity of the installation process are important factors to consider. Some systems are compact and easy to install, while others may require professional installation and more space. Consider where you will install the system and whether you have the necessary space and plumbing skills. If you're not comfortable with DIY installation, you may need to factor in the cost of professional installation.
Certifications and StandardsLook for water filtration systems that are certified by reputable organizations such as NSF International. These certifications ensure that the system has been tested and meets specific standards for contaminant removal and performance. Choosing a certified system gives you confidence that the product will effectively filter your water and provide the health benefits you expect. Check the certification labels and read reviews to ensure the system meets your needs.
Additional FeaturesSome water filtration systems come with additional features such as UV purification, water softening, or smart monitoring. UV purification can be useful for eliminating bacteria and viruses, while water softening can help reduce scale buildup in your pipes and appliances. Smart monitoring features can alert you when it's time to replace filters or if there are any issues with the system. Consider which additional features are important to you and whether they justify the extra cost.