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5-Stage Tier1 Reverse Osmosis System

Price $159.99 List Price Price $228.99 Save 30%
Availability: In Stock - Free Shipping
Installs directly onto the cold water supply.
  • For optimum performance, change the sediment and carbon filters every 6 months, depending on use. The membrane should last 2-3 years.
  • Per glass, the RO5 gives you better water and costs you less than your average bottled water.
  • RO membranes capture contaminants like barium, cadmium, chromium, copper, fluoride, lead, mercury, nitrates, radium, and TDS.
  • Modern design chrome faucet included!
See more product details
The Tier1 5-Stage Reverse Osmosis System is the complete package, using 5 stages to deliver up to 50 gallons of filtered water per day. The 5 stages include a first stage sediment filter, to remove particular contaminants, followed by a carbon filter for bad taste and odor, and a third stage sediment filter to remove any remaining contaminants, prolonging the health and performance of your system. The 4th stage is our Tier1 RO membrane which removes 99% of all Total Dissolved Solids, and lastly an inline carbon block filter to polish the water. Once processed, the water is transferred to an automatic shutoff valve equipped storage tank where it waits for you to turn on the tap! This system includes all of necessary parts: starting filters, membranes, housings, brackets, shut-off valve, saddle valves, tubing, fittings, standard long reach chrome faucet, and installation instructions.

Reverse Osmosis

Reverse Osmosis is the process of forcing water through a semi-permeable membrane, which allows water molecules to pass, but captures water-soluble toxins, such as heavy metals, organics, bacteria, and pyrogens. Reverse Osmosis captures a significant percentage of high toxic impurities, such as asbestos, hexavalent chromium, and lead.

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty1
Used In BrandsTier1
Manufacturer's IdRO5
Actual Size (in)18 inches (Length) x 14 inches (Width) x 6 inches (Depth)
Operating Pressure (psi)40 - 75
Operating Temperature (°F)40 - 100
Flow Rate (gpm)0.5
Flow Rate (gpd)50
Tank Dimensions15 inches (Length) x 11 inches (Outside Diameter)
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product
IncludesTwo Sediment Filters (5 micron and 1 micron), Two Carbon Filters ( 5 micron Carbon Block and Inline), Reverse Osmosis Membrane, Tank, Component Parts, Chrome Faucet, and Housing Wrench
Primary Filter MediaSemi-Permeable Membrane

Reduced Contaminants

The TIER1-RO5 reduces the following contaminants:

  • Arsenic
  • Barium
  • Cadmium
  • Chlorine Taste & Odor
  • Chromium (III / Trivalent)
  • Chromium (VI / Hexavalent)
  • Copper
  • Cryptosporidium
  • Cysts
  • Fluoride
  • Giardia
  • Lead
  • Mercury
  • Nitrates / Nitrites
  • Radium
  • Selenium
  • Total Dissolved Solids (TDS)
  • Toxoplasmacysts
  • Turbidity

The TIER1-RO5 is comparable with the following part numbers


The TIER1-RO5 fits the following model numbers


Installation Guide

User Guide


  1. For more information see the provided Tier1 5-Stage Reverse Osmosis System Manual
  2. In addition to our manual, we have also provided a step-by-step installation video for your reference below:

  3. When it is time to change your filters, use your filter wrench to unscrew the filter housings. DO NOT use the wrench to tighten the housing sumps because you can damage the o-rings. Please review the below video for a step-by-step guide to changing the filters of your Tier1 RO5: