When it comes to providing clean, filtered water, reverse osmosis (RO) systems are one of the most effective solutions for homeowners. RO systems work by forcing water through a semi-permeable membrane to remove contaminants such as heavy metals, chlorine, and microorganisms for purified drinking water.
Choosing the right reverse osmosis system depends on a variety of factors including filtration capacity, ease of installation, and long-term maintenance costs. We’ve ranked the top systems by looking over expert reviews, customer feedback, cost, and standout features. Whether you’re looking for an entry-level system or a top-of-the-line, multi-stage filtration unit, you’ll find the best options here.
Best Brands at a Glance
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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
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- Very affordable base models
- High water output rates
- Easy maintenance
6 Best Reverse Osmosis System Brands of 2025
Apec Water
- Average Cost to Install: $200 to $600
What We Love
APEC Water Systems is known for its superior filtration performance and long-lasting durability. The brand offers a range of high-capacity systems ideal for larger households or those needing superior water quality by removing contaminants, bacteria, viruses, chlorine and odors. Their commitment to customer satisfaction and ease of use makes them one of the best choices in the market.
Cost Information
APEC offers systems starting at around $200 for basic models, while advanced units can cost upwards of $600. The price usually includes a multi-stage filtration process and a reliable warranty. The company also offers regular discounts and sales through their website.
Best Model
The APEC ROES-50 is one of the most popular models, offering a 4-gallon tank, five stages of filtration and an efficient output of 50 gallons of water per day. Its filters are easy to replace as well, making it a great choice for homeowners who want a hassle-free, high-performance system.
iSpring Water Systems
- Average Cost to Install: $150 to $700
What We Love
iSpring strikes an excellent balance between affordability and quality. Their reverse osmosis systems come in countertop, tankless and tank varieties and are known for providing high filtration standards without breaking the bank. The brand has built a reputation for simplicity and reliability, making it a great choice for first-time buyers.
Cost Information
iSpring systems start around $150 for basic models, with advanced models available up to $700. Commercial-grade options will cost upwards of $3,500. Their affordability doesn’t compromise on the system’s performance, making them one of the best value options. The company offers regular sales and discounts through its website as well as warranties on its products.
Best Model
The iSpring RCC7U is a standout under sink filter, offering a 7-stage filtration process for superior purification. It’s a top choice for homeowners who want to remove even the smallest contaminants from their water and includes a UV water filter and water softener.
Home Master
- Cost to Install: $300 to $600
What We Love
Home Master reverse osmosis systems are designed to provide high-quality water while being more efficient than traditional systems. Their innovative features, such as the “Full Contact” technology, ensure mineral retention, making the water taste better while still removing contaminants.
Cost Information
Starting at around $300, Home Master offers premium systems with advanced filtration stages. Some of their models, like the Home Master TMAFC, can cost upwards of $600, but they provide long-term value with exceptional performance. Their products are widely available through Home Depot and Amazon with options for free shipping.
Best Model
The Home Master TMHP HydroPerfection is one of their top models. It combines reverse osmosis with UV sterilization to ensure the highest water quality. This option is great for homes that need a thorough, multi-stage filtration system. Additional parts are available so you can hook this model up to your fridge as well.
Aquasana
- Cost to Install: $150 to $550
What We Love
Aquasana is known for its commitment to sustainability and high-performance filtration. Their systems feature NSF-certified filters and are designed to improve the taste and purity of your water while being environmentally friendly by producing less water waste.
Cost Information
Entry-level systems begin at around $150, while more robust models can reach $550 or higher. Aquasana provides multi-stage filtration systems that target a wide range of contaminants, though replacement filters are on the pricier side. Sales are common and widely advertised on the company’s site.
Best Model
The Aquasana SmartFlow Reverse Osmosis system is one of the brand’s flagship models and promises to remove 90 contaminants including fluoride, arsenic, chlorine and lead from your home’s water. The system includes four methods of filtration and remineralization.
Express Water
- Cost to Install: $150 to $350
What We Love
Express Water is an excellent choice for homeowners looking for a budget-friendly and straightforward reverse osmosis system. Its systems are easy to install, maintain, and replace filters, making them perfect for those who like to do their own repairs and maintenance.
Cost Information
The cost for Express Water systems ranges from $150 to $350, with most options available in the mid-range price category. This makes it a great option for homeowners who want reliable filtration without spending too much. The company advertises sales and discounts on its site.
Best Model
The Express Water Elite Reverse Osmosis Alkaline System is one of their most popular models, featuring alkaline filtration with five different kinds of activated mineral rocks for five stages of remineralization.
Brondell
- Cost to Install: $250 to $450
What We Love
Brondell focuses on sleek, compact designs that make their reverse osmosis systems ideal for small kitchens or homes with limited under-sink space. Despite their smaller size, these units perform well in providing clean, filtered water.
Cost Information
Brondell reverse osmosis systems typically range from $250 to $450, offering a solid balance between space-saving design and filtration performance. Discounts are readily available on the company’s website.
Best Model
The Brondell Circle is a standout for its space-saving design and energy-efficient features. It uses four stages of filtration, has been certified by the Water Quality Association and uses patented technology to conserve water usage.
