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Tier1 WH-RO-700 Whole House Reverse Osmosis System (700 GPD)

Price $1,119.99 List Price Price $1,599.99 Save 30%
Availability: Special Order Item - Free Shipping
Fits most standard water lines. System includes 3/8 inch fittings. This item has important return policy exclusions. Please review our Returns & Exchanges Policy.
  • Automatic shut-off valve
  • Push and pull fittings with locking safety clips
  • Use alone or as part of a larger Tier1 Whole House Solutions configuration
  • The slim lne filter housings fit most standard 20 inch sediment and carbon filters
See more product details
The Tier1 WH-RO-700 Whole House Reverse Osmosis System (700 GPD) provides a pump-free 5-stage system solution to whole house reverse osmosis filtration. The Tier1 WH-RO-700 can be installed free-standing or wall mounted, to save floor space. Each systems includes two membrane elements and membrane housings, a 5 micron sediment pre-filter, and two 10 micron carbon blocks, one for pre-filtration and one for post filtration polishing. The 5 stages of reverse osmosis filtration provide among the purest water available, directly from your own faucet.

What is Reverse Osmosis?

Reverse Osmosis is the process of forcing water through a semi-permeable membrane, which all that 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.

Sediment Pre-filtration

The WH-RO-700 includes sediment pre-filtration to reduce physical particulates from the water source. Contaminants include Sand, Rust, Silt, Soil, and more. The contaminants are captured in the filter cartridge.

Carbon Pre-filtration

The WH-RO-700 features carbon pre-filtration to reduce the presence of chlorine taste and odor. These foul tastes and odors are are byproduct of standard civic water treatments. The pre-filtration phase also utilize carbon to reduce dangerous chemicals, while the water is allowed to flow unimpeded through the filter.

Carbon Post Filtration

The WH-RO-700 features a final stage of carbon based filtration, this final stage follows the water molecules' passage through the semi-permeable membrane. At this point, the water molecules have been freed from contaminates and impurities down to 10 microns during the pre-filtration phases and heavy metals, organics and bacteria have been reduced during the reverse osmosis phase. The post filtration phase is considered the polishing phase, a final opportunity to improve the water's aesthetics and taste.

Don't forget the Tank!

Due to the Reverse Osmosis filtration process, water flow rate is reduced. To effectively utilize this system for whole house filtration, you it must be paired with a water holding tank. On account of the varying water holding capacity needs, the tank must be purchased separately, ensuring you are able to select the size that fits your needs.

Package Qty 1
Used In Brands Tier1
Manufacturer's Id WH-RO-700
UPC 810004474116
Actual Size (in) 12 inches (length) x 17 inches (width) x 32 inches (height)
Actual Size (cm) 30.48 x 43.18 x 81.28
Primary Filter Media Semi-Permeable Membrane
Pre Filter Media Carbon Block
Post Filter Media Carbon Block
Micron Rating (Nominal) 5
Operating Pressure (psi) 0 - 100
Maximum Operating Pressure (psi) 90
Operating Temperature (°F) 40 - 85
Operating Temperature (°C) 4.4 - 29.4
Flow Rate (gpm) 0.49
Flow Rate (lpm) 1.85
Flow Rate (gpd) 700
Fitting Type Quick Connect
Fitting Size (inches) 3/8 inch
Color White
Warranty Guarantee Tier1® Whole House Systems: Protect Every Drop Guarantee
Primary Filter Media Semi-Permeable Membrane

Reduced Contaminants

The TIER1-WH-RO-700 reduces the following contaminants:

  • Barium
  • Cadmium
  • Chlorine Taste & Odor
  • Chromium (III / Trivalent)
  • Chromium (VI / Hexavalent)
  • Copper
  • Fluoride
  • Lead
  • Mercury
  • Nitrates / Nitrites
  • Selenium
  • Silt
  • Total Dissolved Solids (TDS)
  • Turbidity

Installation Guide

User Guide


  1. For installation instructions please read the RO System Installation Guide
  2. For additional information on the Tier1 reverse osmosis system please see the RO System Spec Sheet

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