Pentair Reverse Osmosis System

$1,099.00

50 in stock

Detailed Description

Pentair Water Filter System | Undersink Reverse Osmosis System

The Pentair Reverse Osmosis (RO) System by illi Water is an advanced water purification system, built specifically for Canadian families seeking better-tasting and safer water. It is compact, NSF/ANSI (42, 53, 58) certified, and highly efficient. Measuring 14.57″ × 5.46″ × 12.54″, the system with a 3.2-gallon tank tucks neatly under your kitchen sink and delivers approximately 21 gallons of crystal-clear water per day, meeting your needs for cooking, drinking, and other tasks.

The Pentair RO water filter system uses 4 filtration stages to remove 99% of contaminants, including cysts, PFAS, lead, chlorine, and other harmful substances, from your water. Its 50 GPD membrane ensures consistent performance, delivering pristine water with every sip. Unlike traditional reverse osmosis systems that drain water, the Pentair reverse osmosis system achieves a 41.05% recovery rate, reducing water waste and improving efficiency.

Additionally, the Pentair undersink reverse osmosis filter includes a built-in air-gap faucet and check valve for safety and to prevent cross-contamination. Its automatic membrane flush extends the filter life and ensures the unit performs optimally. Moreover, it comes with a tool-free cartridge and ⅜” push-fit connections, making its maintenance fairly simple. Depending on usage, the filters can last 12 to 24 months, making it a cost-effective, low-maintenance system. It is cutting-edge, robust, designed for simplicity, and keeps your family safe, making it the perfect investment.

How Does the Pentair 4-Stage Reverse Osmosis System Work?

The Pentair reverse osmosis water system uses a multi-stage purification process to protect your water’s structural integrity and remove contaminants.

Here is a detailed breakdown of how the Pentair 4-stage reverse osmosis system operates:

Stage 1- Chlorine Taste & Odor Reduction (Pre-Filtration): Carbon and sediment pre-filters toss out large particles such as silt, rust, dirt, sand, chlorine and chloramines.
Stage 2- Contaminant Reduction: Water passes through a semi-permeable membrane that filters TDS such as lead, cysts, arsenic, fluoride, PFAS, salts, and other contaminants.
Stage 3- Twin Carbon Block Protection: Carbon block post-filter further eliminates trace impurities present in water.
Stage 4- Final Polishing & Better Taste: Inline carbon polishing filter absorbs any residual taste in the water, ensuring you get refreshing water.

Why Choose an Undersink Pentair Reverse Osmosis System?

Illi Water’s undersink Pentair reverse osmosis water filter delivers practical water purification to Canadian homes, enabling access to clean, safe, and refreshing water right from the tap.

Here’s why you should consider the Pentair reverse osmosis filter by illi Water for your home.

21 Gallons Per Day

The Pentair RO unit filters up to 21 gallons (79+ liters) of water every day, sufficient for your family’s drinking, hydration, and cooking needs.

41% Water Recovery Rate

The Pentair water filter features a 41% water recovery rate, meaning it uses water efficiently and significantly reduces wastewater.

3.2-Gallon Storage Tank

It includes a large 3.2-gallon storage tank to provide a consistent supply of clean water at a consistent pressure.

Air Gap Faucet

Compliant with Canadian plumbing standards, the Pentair undersink unit features an air-gap faucet that provides a physical air break to prevent water from flowing back into the clean water.

Built-in Check Valve

For added safety, the Pentair water filter includes an internal check valve that automatically locks the system in place if water pressure drops, helping prevent contamination and backflow.

Smart Space Usage

Measuring only 14.57″ × 5.46″ × 12.54″ and weighing 8.9 lbs, this compact, vertical system fits neatly in an under-sink cabinet, optimizing kitchen space.

Easy Click-in Installation of Cartridge

The Pentair home water filter features a tool-free maintenance design, click-in filter cartridges, and push-fit connections, making cartridge replacement easy.

Automatic Membrane Flush

The system has an integrated automatic membrane flush that cleans the RO membrane, improving its efficiency and preventing premature scaling.

Long-Lasting Filters

The Pentair reverse osmosis system is a no-fuss unit with long-lasting filters, making its maintenance rather straightforward.

Why Trust illi Water to Get Pentair RO System for Your Canadian Home?

The value of Pentair's reverse osmosis undersink filter is enhanced by illi Water’s commitment to guarantee your satisfaction. Investing in the Pentair water filter system from illi Water is a decision that will pay off multiple times over the long term.

NSF/ANSI Certified: The Pentair undersink system by illi Water is independently tested and carries the NSF/ANSI certification for system safety, performance, and contaminant reduction.
5-Year Warranty: Our solid 5-year warranty protects your investment. It covers workmanship and defective materials.
90-day Satisfaction Guarantee: In case you aren’t satisfied with the system within 90 days, return the unit for a complete refund.

At illi Water, we care about your peace of mind and strive to protect it with our advanced water filters.

What’s in the Box

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

Warranty

At Illi Water, we back our products with a comprehensive warranty that includes the following:

5-Year Limited Warranty: The 5-year warranty covers workmanship and defective materials that you can claim in the 5-year period. It does not cover the consumable membranes and filters after the initial order delivery and any defects in the system due to misuse, freezing, or improper installation.
90-Day Satisfaction Guarantee: Install and use the system, and if you aren’t completely pleased with its performance, feel free to return it for a full refund.

To initiate a claim, email us at support@illiwater.com.

Delivery and Return

illi Water provides free shipping on all orders across Canada. Typically, it takes 1 to 2 business days to process the orders. You’ll receive your order’s tracking details to follow your shipment throughout the process.

If you need to return your Pentair filtration system, contact our support team within 90 days ofdelivery. We issue refunds within 5 to 10 business days after we inspect your returned system. Per our policy, customers are responsible for the shipping costs when returning an order.

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High Flow Rate With Unlimited Supply

The Pentair RO filter’s high flow rate is certainly one of the system’s best features. It features a high-efficiency reverse-osmosis mesh membrane that replenishes the 3/2-gallon storage tank. Opening the faucet draws water from the pre-pressurized tank, providing an instant, strong stream. It has a generous daily capacity of up to 21 gallons of pure water, so you’ll never run out when cooking or preparing beverages.

Pentair 4-Stage Reverse Osmosis System - Advanced Filtration

The Pentair 4-stage reverse osmosis filtration system comprehensively purifies your water through four advanced stages. Here’s how the system provides you with reliable drinking water round the clock

Stage 1: Sediment & Carbon Pre-Filtration: This is the first and most fundamental line of defense, boasting state-of-the-art carbon and sediment pre-filters. The pre-filters toss out big, visible impurities such as silt, rust, sand, and dirt. Plus, the carbon block reduces chloramines and chlorine to protect the delicate mesh membrane in the second stage.

Stage 2: Reverse Osmosis (RO) Membrane Filtration: The second stage forms the core of the system. The system applies pressure to water, forcing it to pass through a semi-permeable membrane with microscopic pores. Water passes through the ultra-fine barrier and is stripped of up to 99% of total dissolved solids (TDS), including lead, cysts, arsenic, fluoride, PFAS, salts, and other contaminants. Pure water moves forward while the concentrate rich in impurities is flushed away. The system’s automatic flush consistently cleans the membrane, helping it perform at full capacity.

Stage 3: Twin Carbon Block Post-Filtration (Lead Reduction): The third stage consists of an activated twin carbon block that provides enhanced protection to your water. Backed by NSF certification, it removes trace impurities that other filters often miss.

Stage 4: Final Inline Carbon Polishing: The last stage works entirely on perfecting the clarity and taste of water. It features a final carbon filter that captures any residual tastes and odors left in the water, guaranteeing crisp, clear, and delicious water every single time.

Why Choose a Pentair Undersink Reverse Osmosis Water Filter?

The Pentair whole-house reverse osmosis filter is sleek, compact, homeowner-friendly, and NSF certified
and provides an ample supply of clean water. It is an excellent alternative to bulky appliances, expensive bottles,
and inefficient filtration pitchers.

Let’s break down the top reasons why you should invest in this practical water purification unit.

Space-Saving Design

The Pentair reverse osmosis undersink filter has a sleek, vertical design and measures 14.57″ × 5.46″ × 12.54″. It is lightweight, weighing around 8.9 lbs. Due to its small size and minimal bulk, this compact system comfortably fits inside your kitchen cabinet without any visible clutter. Its space-saving design leaves lots of room on the kitchen counter for you to organize other essentials.

What makes the Pentair RO System different from a standard under-sink filter?

The Pentair system is a certified 4-stage reverse osmosis unit, which means it goes far beyond what basic pitcher or faucet filters can do. It uses a 50 GPD semi-permeable membrane to remove up to 99% of TDS, lead, cysts, PFAS, arsenic, and fluoride. It also features an automatic membrane flush that extends filter life, a built-in check valve to prevent backflow, and triple certification to NSF/ANSI 42, 53, and 58, three of the most rigorous independent standards in the water filtration industry.

How much purified water does the Pentair system produce each day?

The Pentair system filters up to 21 gallons (roughly 80 litres) of purified water per day, stored in the included 3.2-gallon tank, so it's ready the moment you open the tap. The tank takes around 2–4 hours to fully refill. For most Canadian families of 2–4 people, that daily output comfortably covers drinking, cooking, and making hot beverages.

Does the Pentair RO System waste a lot of water?

It's more efficient than most traditional RO systems. The Pentair achieves a 41% water recovery rate, meaning it wastes significantly less water per litre of purified output than older systems running at 20–30% recovery. The automatic membrane flush maintains that efficiency over time by keeping the membrane clean and preventing premature scaling.

How often do I need to replace the filters, and is it easy to do?

The Pentair's filters are designed to last 12–24 months, which is longer than many competing systems. Replacement is tool-free — the cartridges click in and out using push-fit connections, so no special equipment is needed. Annual filter kit costs typically range from $80 to $120 CAD, making it one of the lower-maintenance options in the illi Water range.

Is the Pentair RO System compliant with Canadian plumbing standards?

The system includes an air-gap faucet that creates a physical air break between the drain and the filtered water line, a requirement under Canadian plumbing codes in many provinces. The built-in check valve also automatically locks the system if water pressure drops, preventing contaminated water from flowing back into the clean supply.

What's in the box, and how long does installation take?

The box includes the main filtration unit, a 3.2-gallon storage tank, an air-gap faucet, all pre-installed filter cartridges, tubing with ⅜" push-fit connections, a check valve, and a user manual with detailed diagrams and a tap drill template. Most homeowners complete the installation themselves in under an hour. If you'd prefer professional help, illi Water can connect you with certified technicians across Canada.

How quickly will my order arrive, and what's the return policy?

All orders ship free across Canada and are processed within 1–2 business days, with tracking details provided once your order is on its way. Every Pentair RO System comes with a 90-day satisfaction guarantee. Return it within 90 days for a full refund if you're not completely happy, plus a 5-year limited warranty covering defects in materials and workmanship. Refunds are processed within 5–10 business days after the returned unit is inspected. Contact support@illiwater.com to get started.

Pentair Reverse Osmosis System