Crystal Quest Whole House Reverse Osmosis System, 300 to 7000 GPD

The Crystal Quest whole house reverse osmosis system brings purified water to every tap in your home, and Crystal Quest calls it the best-performing RO system available, drawing on more than three decades of experience. Each unit is tested at the factory before it leaves, arrives ready to run and needs only minimal plumbing. Keep the pre-filters and membranes on schedule and the system is expected to last 15 to 20 years.

A whole house reverse osmosis system built to last

Every Crystal Quest RO system is modular, asks for little day-to-day attention and is economical to run. A whole house system is a long-term investment in your home and family, and it is designed to pay that investment back for many years.

Finding the right fit is easier with a wide choice of flow rates, so you can match the system to the daily water use of your household.

Advantages of the Crystal Quest whole house RO

• Compact build that saves floor space
• Components that are easy to reach
• Lightweight design that can be expanded later
• Fully equipped, with room to customize
• Low running costs
• Inexpensive to maintain
• Simple to service and maintain
• Tested and preserved at the factory
• CE compliant
• Made in the USA
• ISO certified components from Scientific World Products

What is in the storage tank kit

• RO unit: a reverse osmosis system of commercial grade with pre-filtration on board, which extends membrane life.
• Water tank: purified water is held in an atmospheric storage tank of 165, 220 or 500 gallons, chosen to suit your system, your demand and the space you have.
• Pump: whenever water is drawn in the house, the pump delivers it from the tank on demand.
• Float switches: mounted inside the tank, they tell the RO system when to switch on and off according to the water level.

Optional add-ons

12 GPM UV Water Sterilizer

A premium UV sterilizer can be added as an extra safeguard against microbiological contamination.

Alkalizing post-filter options

Several whole house filters that naturally alkalize, mineralize and oxidize are available to raise the alkalinity of the water before it is distributed through the house.

Remineralizer system

This add-on is sized to your daily consumption in gallons per day (GPD). It puts essential minerals back into the purified water and adjusts the pH, which protects plumbing and fixtures and improves the taste. The table shows which remineralizer suits each system size.

If you prefer strongly alkaline water, you can choose a larger remineralizer than the table suggests.

Water straight from a reverse osmosis membrane is free of minerals and may be slightly acidic. A pH under 6.4 is not advised for people or livestock to drink. Remineralizing after the RO raises the pH and alkalinity and prevents the damage acidic water can do to plumbing and fixtures.

Very alkaline water can taste unpleasant to some people, with a note often described as plastic, metallic, chlorine-like or fishy.

Popular upgrades

Every system comes with a broad set of standard features. A range of options lets you adapt it to different water treatment needs; these are the upgrades chosen most often.

• Stainless steel rotary vane pump: lasts longer and copes better with feed water that is high in TDS and with corrosive substances such as dosing chemicals and antiscalants.
• Concentrate recycle valve: sends part of the wastewater back into the feed stream, raising recovery and making the RO system more efficient.
• SWP Digital Dual TDS Controller: shows the TDS of the feed and of the permeate at the same time, so you can see how well the membrane is working and how much salt it rejects.
• SWP Digital TDS Controller: tracks either the feed TDS or the permeate TDS.
• SWP Digital TDS/Conductivity Controller: tracks the TDS and conductivity of the RO permeate, a useful measure of how well the whole system performs.
• IF Computer Controller with feed flush: adds a pre-treatment lockout, a tank level input and an LED status display that makes operation easier.
• S150 Computer Controller with Feed Flush: adds a pre-treatment lockout, a tank level input, an LED status display and an alarm (4000 GPD and larger only).
• Chemical pump outlet: a power outlet built into the RO system for a chemical feed pump to plug into.
• Blending valve: mixes some feed water into the final RO permeate to reach the TDS level you want.
• Permeate sample port: lets you check each membrane separately, which helps with troubleshooting and maintenance.
• 240V 50-60Hz or 110V 50-60Hz: pick the voltage and frequency your site requires.
• Single wood crate

Rating conditions

Every system is rated with water at 77 degrees Fahrenheit and total dissolved solids (TDS) below 2000. Look up the specs of the precise model you have in mind. If your water is outside these limits, get in touch with us for advice on the right setup.