When choosing a reverse osmosis (RO) system, homeowners should look beyond the price tag. Key factors include filtration performance, daily water output, ease of installation, and long-term maintenance costs. The right RO system not only improves water taste and quality but also helps protect your family’s health by removing harmful contaminants like lead, chlorine, and PFAS.
Most reverse osmosis systems cost between $150 and $3,000 installed, depending on size, capacity, and features such as remineralization or UV filtration. Choose based on what matters most: water purity, efficiency, maintenance, and household size.
- Best for high-end filtration: Leaf Home, Apec
- Best value: iSpring, Express Water
- Best for eco-conscious options: Aquasana
- Best for small spaces: Brondell
- Best for easy maintenance: Home Master
How to decide: Compare filter lifespan, system size, and contaminant removal ratings. Schedule a free water test or quote to confirm the best fit for your home.
Best Brands at a Glance
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- Comprehensive multi-stage filtration
- High daily water production capacity
- Dedicated faucet for purified water
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- Large range of products and options
- Durable, long-lasting components
- Buyers report great customer service
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- Affordable pricing for base models
- Easy-to-follow installation guides
- Lots of models to choose from
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- Advanced filtration technology twice as fast as competitors
- Excellent customer support
- Great for larger families
Best Reverse Osmosis System Brands of 2025
Leaf Home Water Solutions
- Average Cost to Install: $1,500 to $3,000
What We Love
Leaf Home Water Solutions offers customized water treatment systems with multi-stage reverse osmosis technology. Its systems remove up to 98% of contaminants — including lead, arsenic, fluoride, and PFAS — and deliver up to 600 gallons per day. Each installation includes free in-home water testing, professional setup, and dedicated local support.
Cost Information
The Leaf Home Reverse Osmosis system typically costs between $1,500 and $3,000. Professional installation adds $300 to $700, and annual filter replacement costs vary by model.
Best System
Leaf Home’s Reverse Osmosis System uses a multi-stage filtration process to remove up to 98% of contaminants, including lead, arsenic, fluoride, and PFAS. Installed under the sink, it delivers up to 600 gallons of purified water per day through a dedicated faucet, refrigerator, or ice maker.
Apec Water
- Average Cost to Install: $200 to $600
What We Love
APEC Water Systems is known for powerful multi-stage filtration and excellent build quality. Their systems remove bacteria, heavy metals, and chemical contaminants while maintaining high flow rates. APEC’s ROES-50 model, featuring five stages of filtration and a 4-gallon tank, is one of the most popular choices among homeowners.
Cost Information
Basic models start near $200; premium units with additional filters or UV options can exceed $600.
Best Model
The APEC ROES-50 is a five-stage under-sink system with a 4-gallon tank that filters up to 50 gallons of water per day. Known for its easy maintenance and long filter life, it provides clean, crisp water ideal for medium to large households.
iSpring Water Systems
- Average Cost to Install: $150 to $700
What We Love
iSpring offers a balance of affordability and reliability. Their systems range from compact countertop models to advanced 7-stage filtration units with UV sterilization. The iSpring RCC7U stands out for its combination of filtration precision and ease of use.
Cost Information
Entry-level systems start at $150, while larger under-sink and tankless units can reach $700. Filter replacements are low-cost and widely available.
Best Model
The iSpring RCC7U features seven stages of filtration, including a UV sterilizer that kills bacteria and viruses while removing heavy metals, chlorine, and fluoride. It’s a top-rated system for homeowners seeking advanced purification at an affordable price.
Home Master
- Cost to Install: $300 to $600
What We Love
Home Master’s innovative “Full Contact” technology retains beneficial minerals while removing contaminants, resulting in cleaner, better-tasting water. The TMHP HydroPerfection model combines reverse osmosis and UV sterilization for comprehensive purification.
Cost Information
Prices start around $300 and reach $600 for top models. Filters last longer than average, reducing maintenance time and cost.
Best Model
The Home Master TMHP HydroPerfection combines reverse osmosis and UV sterilization to remove 99% of contaminants while retaining beneficial minerals. Its modular filter design allows for quick, mess-free changes and improved water taste.
Aquasana
- Cost to Install: $150 to $550
What We Love
Aquasana designs NSF-certified systems that reduce contaminants while minimizing wastewater. The SmartFlow RO system removes up to 90 contaminants, including lead, fluoride, and chlorine, while remineralizing for improved taste.
Cost Information
Models range from $150 to $550, with replacement filters costing slightly more than average.
Best Model
The Aquasana SmartFlow Reverse Osmosis System uses four stages of filtration, including remineralization, to remove more than 90 common contaminants. Its efficient design minimizes wastewater, making it an eco-friendly option for daily drinking water.
Express Water
- Cost to Install: $150 to $350
What We Love
Express Water systems are simple, affordable, and easy to maintain. The Elite Reverse Osmosis Alkaline model offers five stages of filtration and remineralization, ideal for first-time buyers or renters.
Cost Information
Most systems cost between $150 and $350, making them one of the most accessible options for homeowners.
Best Model
The Express Water Elite RO Alkaline System features five stages of filtration and remineralization using multiple activated mineral rocks. It’s an affordable, easy-to-install system that produces balanced, great-tasting water directly from your kitchen faucet.
Brondell
- Cost to Install: $250 to $450
What We Love
Brondell focuses on sleek, efficient systems that fit under smaller sinks without sacrificing performance. The Brondell Circle model features four stages of filtration and patented technology that conserves water use while maintaining strong pressure.
Cost Information
Typical systems range from $250 to $450, with readily available replacement filters.
Best Model
The Brondell Circle RO System is a compact, four-stage unit that fits easily under the sink while conserving water through patented smart-flow technology. It’s ideal for small kitchens or apartments where space and efficiency matter most.
