OPEN BOX - NU Aqua 3 Stage Whole House Water Filtration System

Nu AquaSKU: OB-GA-342

FREE SHIPPING to Continental US

Sale price$299.97 Regular price$427.95


Looking for big savings? "Open-Box" series of products are tested and proven to work just like new. Items marked as " Open Box " have minor dings and scuffs to their exteriors from shipping. While some equipment may have been slightly used, each "Open Box" item is tested and inspected and assured to work as advertised. All items marked "Open Box" items are marked up to 50% off retail value and come with a limited warranty.



The NU Aqua 3 Stage Whole House Water Filter is just what your entire house needs. From your shower to your sinks, when you want refreshing, clean water every time you turn the tap, this whole house water gives you fresh water on demand.

This professional-grade filtration system isn’t just good for your home, it’s good for restaurants, business offices, and even apartment complexes. Each stage of filtration scrubs your water of imperfections, leaving your household or business with nothing but clean water that’s safe to use, safe to drink, and free of odors. Here’s how they work:

Stage 1- Sediment Filter

This is where it all begins. Incoming water is run through this filter to remove tiny particles from your water like rust, silt, dirt, and even insect parts. This helps assure that the water you receive is free of these contaminants and won’t clog dishwashers, ice makers, and even pores in your shower heads and faucets.

Stage 2- Granulated Activated Carbon (GAC) Filter

The second filter your water passes through is a GAC filter. The carbon in this filter adsorbs hundreds of chemical-based contaminants including chlorine, pesticides, volatile organic compounds (VOC’s), industrial chemicals, lead, mercury, and benzene. These contaminants stick to the carbon media and leave your water free of high concentrations of chemicals harmful to your health.

Stage 3- Carbon Block Filter

The last filter your water passes through will be the carbon block filter. A 20 inch compressed 5-micron carbon block filter polishes your water before it hits the faucet. Here the water is polished and filtered to remove bad taste and odor-causing chemicals like chlorine, chloramine, sulfur (that rotten egg smell), and even trihalomethanes, which are byproducts of disinfectants and cause cancer.


Of course, none of this would be possible without high-quality components. The NU Aqua 3 Stage Whole House system offers industrial-grade components, from the filter housing to the mounting brackets and all connections. With high capacity, 20” cartridges in each filter housing you’ll be able to filter thousands of gallons of water without fouling. When it’s time to change filters, it’s a simple as taking off the filter housing, slipping in the replacement cartridge, and putting the housing back on.


Whether you need clean water for your entire apartment complex, lots of water for your business, or you just want refreshing water from every faucet in your home, the NU Aqua 3 Stage Whole House Water Filter is exactly what you need. Take better showers, make better coffee, and give yourself the clean, refreshing water you deserve.

Product Specifications:

  • Heavy-duty filtration gives your entire house or business the freshwater you need for drinking, cooking, cleaning, and more.

  • Gets rid of contaminants in your water such as rust, silt, dirt, chlorine, fluoride, pesticides, volatile organic compounds (VOC’s), industrial chemicals, lead, mercury, and benzene

  • Large 20-inch filters withstand high amounts of water.

  • Flow Rate: 15GPM

Customer Reviews

Based on 1 review
Barton Kendall
New Filter system

I order a whole house system to replace a single filter
system. The one that I ordered was a damage unit and I was able to straighten the top edge. Everything worked out great. Very happy with the filter system.