Pentair Reverse Osmosis System

The Pentair Reverse Osmosis System by illiwater is built for families who want safer, better-tasting water without complicated maintenance or bulky systems. Compact, efficient, and NSF certified, it fits neatly under your kitchen sink while delivering up to 21 gallons of purified water per day—more than enough for daily drinking, cooking, and hydration needs.

This system uses 4 advanced stages of filtration to eliminate up to 99% of contaminants, including lead, chlorine, PFAS, cysts, and other impurities that may affect your health and the taste of your water. With a 50 GPD membrane at its core, the Pentair RO is designed to deliver consistent performance, ensuring your family always has access to water you can trust.

Unlike older RO systems that waste large volumes of water, the Pentair system achieves a 41.05% recovery rate, meaning less waste and more efficiency. It’s an eco-conscious choice that not only protects your health but also helps reduce your household’s water footprint.

Core Features at a Glance

• 4-Stage Filtration: Removes up to 99% of lead, PFAS, chlorine, cysts, and other contaminants.
• 50 GPD Membrane: Reliable contaminant removal with reduced water waste.
• 21 Gallons Per Day Capacity: Ideal output for family drinking, cooking, and daily use.
• 41% Recovery Rate: Reduces water waste compared to older RO systems.
• Built-in Safety: Air gap faucet and check valve prevent cross-contamination.
• Tool-Free Maintenance: Quick cartridge changes and push-fit connections.
• Automatic Membrane Flush: Helps maintain performance and extend filter life.
• Compact Design: Lightweight and sized to fit neatly under the sink.
• NSF/ANSI 42, 53, 58 Certified: Independently tested for safety and performance.
  

Safety is built into every detail. The included air gap faucet prevents cross-contamination, while a built-in check valve protects against backflow. These features add extra peace of mind, ensuring your water stays as pure in the glass as it is when it leaves the system.

Maintenance is simple. Tool-free cartridge changes and 3/8″ push-fit connections make replacing filters quick and stress-free—no need for specialized tools or plumbing expertise. An automatic flush function keeps the RO membrane cleaner for longer, further reducing upkeep. Depending on usage and water quality, filters can last 12–24 months, making this system low-maintenance and cost-effective.

Physically, the Pentair RO system is compact and lightweight. Measuring just 14.57″ × 5.46″ × 12.54″ and weighing 8.9 lbs, it’s designed to fit comfortably under most kitchen sinks. The included 3.2-gallon tank stores treated water, ensuring a steady supply for daily use without long waits.

Certified to NSF/ANSI Standards 42, 53, and 58, this system has been independently tested and proven to meet strict benchmarks for contaminant reduction, safety, and performance. Backed by a 5-year warranty and a 90-day satisfaction guarantee, the Pentair Reverse Osmosis System is a reliable, family-friendly solution for cleaner water every day.

• Pentair Reverse Osmosis System (main filtration unit)
• 3.2-gallon storage tank
• Air gap faucet
• Pre-installed 4-stage filter cartridges
• Tubing and 3/8″ push-fit connections
• Built-in check valve
• User manual with installation instructions

Warranty and guarantee information

At illiwater, we believe your water system should give you confidence every day. That’s why the Pentair Reverse Osmosis System is backed by a 5-Year Limited Warranty and a 90-Day Satisfaction Guarantee.

The 5-Year Warranty covers the system housing, fittings, and internal components against defects in materials or workmanship under normal residential use. Consumable items such as filters and membranes are not covered beyond initial delivery but are protected against manufacturing defects when you first receive your unit.

Our 90-Day Satisfaction Guarantee means you can try the system in your home risk-free. If you’re not fully satisfied, return it within 90 days of delivery for a full refund—no restocking fees, no hidden conditions. Returns are accepted for installed or lightly used systems as long as they’re in good working condition and returned with all original parts and packaging.

What’s covered:

• Defects in materials or workmanship (non-consumable parts)
• Failures under normal household operation
• Prompt support from our dedicated service team

What’s not covered:

• Consumables such as filters and membranes after initial delivery
• Damage from misuse, improper installation, or freezing
• Products returned incomplete or with heavy wear

To initiate a claim, simply contact our support team at [support@illiwater.com]. Provide your order number, product details, and a brief description of the issue. Our team will guide you through the process—whether it’s a replacement part, a full system exchange, or return instructions.

With illiwater, your investment in clean, safe water is always protected.

We provide free shipping on all orders across Canada. Orders typically process within 1–2 business days, and tracking details are provided so you can follow your shipment every step of the way.

If you need to return your system, our 90-Day Satisfaction Guarantee has you covered. Contact our support team within 90 days of delivery, and we’ll guide you through the return process. Refunds are issued within 5–10 business days of inspection and processed back to your original payment method. Customers are responsible for return shipping costs.