Clean, Great-Tasting Water at Every Tap
Crystal Quest Whole House Reverse Osmosis System delivers commercial-grade purification for your entire home, built on more than 25 years of filtration engineering. Every system is assembled, tested, and run before it ships, so it arrives operational and ready to install with only minimal plumbing required. With regular prefilter and membrane changes, these systems are built to run for 15 to 20 years.
Built as a Long-Term Investment
Every system is modular, easy to service, and economical to operate. Whole-house RO is a long-term investment in your home and your family's water, and this system is designed to earn its keep: low maintenance, long service life, and consistent water quality year after year.
A System Sized to Your Home
No two homes use water the same way. With flow rates ranging from 300 to 7,000 GPD, you can match the system to your household size, daily usage, and available space instead of settling for a one-size-fits-all unit.
Benefits at a Glance
- Compact, space-saving footprint
- Easily accessible components for simple servicing
- Expandable, lightweight, modular design
- Fully equipped and customizable
- Low operating costs and low cost of maintenance
- Easy to maintain and service
- Factory tested and preserved before shipping
- CE compliant
- Made in the USA
- Built with ISO-certified components
What's Inside a Storage Tank Kit
- The RO System: A commercial-grade reverse osmosis unit with built-in prefiltration to extend the life of the membranes.
- Water Storage Tank: An atmospheric storage tank in 165, 220, or 500 gallons, sized to your system, your needs, and your space.
- Pump: As water is used throughout your home, it is pumped from the tank on demand.
- Float Switches: Positioned inside the tank, these regulate when the RO system turns on and off based on the water level.
Please note: orders with 500-gallon storage tanks may carry additional shipping charges.
Optional Add-Ons
- 12 GPM UV Water Sterilizer: Added protection that helps prevent microbiological contamination.
- Alkalizing Postfilter: Enhances the alkalinity of your water before it enters the home, with the natural benefits of a whole-house alkalizing, mineralizing, and oxidation filter.
- Remineralizer System: Adds essential minerals back into your purified water and adjusts its pH for healthier, better-tasting water and longer-lasting plumbing.
Why a Remineralizer Matters
Reverse osmosis produces exceptionally pure water, which naturally contains no minerals and can run slightly acidic. Water with a pH below 6.4 is not recommended for human or livestock consumption, and acidic water can be hard on plumbing and fixtures over time. Added as a final treatment step, a remineralizer raises the pH and alkalinity of your water, protects your plumbing, and gives the water a fresher, cleaner taste.
We match the remineralizer to your system's daily output:
| Daily Output | Recommended Remineralizer |
|---|---|
| 300 to 2,500 GPD | Single Big Blue alkalizer / remineralizer |
| 4,000 to 5,000 GPD | Remineralizer system (1.5 cubic feet) |
| 7,000 GPD | Remineralizer system (2.0 cubic feet) |
If you prefer highly alkaline water, you can choose a larger remineralizer than recommended. Keep in mind that very high alkalinity can give water a taste some people find unpleasant, sometimes described as plastic, metallic, chlorine-like, or fishy.
Popular Upgrades
Every system comes standard with a wide range of features, and can be tailored further to fit specialized water treatment needs. Here are some of the most requested upgrades:
- Stainless-Steel Rotary Vane Pump: A longer lifespan and greater resistance to high-TDS feed water and corrosive materials such as dosing chemicals and antiscalants.
- Concentrate Recycle Valve: Increases efficiency by recycling wastewater back into the feed stream to raise the system's recovery rate.
- Digital Dual TDS Controller: Monitors feed and permeate TDS levels at the same time to track salt rejection and membrane performance.
- Digital TDS Controller: Monitors either feed or permeate TDS levels.
- Digital TDS / Conductivity Controller: Monitors permeate TDS and conductivity, useful for evaluating overall system performance.
- Computer Controller with Feed Flush: Adds pre-treatment lockout, tank level input, and a convenient LED status display.
- Advanced Computer Controller with Feed Flush: Adds pre-treatment lockout, tank level input, an LED status display, and an alarm function (available on 4,000 GPD and up).
- Chemical Pump Outlet: Provides an integrated power source for connecting a chemical feed pump.
- Blending Valve: Blends feed water into the final RO permeate to reach a desired permeate TDS.
- Permeate Sample Port: Allows evaluation of individual membrane performance, which aids in troubleshooting and maintenance.
- 240V or 110V (50 to 60 Hz): Select the voltage and frequency your installation requires.
- Single Wood Crate
Good to Know
All systems are rated for 77°F water with total dissolved solids (TDS) under 2,000. Please refer to the specifications for the exact system you plan to purchase. If your water falls outside these ranges, contact us before ordering and we'll recommend the right configuration for your home.
Ready to bring lasting, great-tasting water to every tap? Choose your flow rate and configuration above, or reach out if you'd like help matching a system to your home.
Operating Specifications
| Specification | Value |
|---|---|
| Weight | 50–265 lbs |
| Motor | 0–1.5 HP |
| Voltage | 110V/220V* |
| Frequency | 50 or 60 Hz |
| Feed Connection | 3/8" or 1" |
| Product Connection | 3/8" or 1" |
| Waste Connection | 1/4", 3/8", or 1" |
| Minimum NaCl Rejection | 96% |
| Minimum Feed Pressure | 45 PSI |
| Maximum NaCl Rejection | 98.5% |
| Minimum Feed | 1–10 GPM |
| Maximum Hardness | 15 grains/gallon |
| Maximum TDS | 1,000–2,000 ppm |
| Operating Pressure | 50–150 PSI |
| pH Range | 3–11 |
System Dimensions
| Flow Rate | Dimensions |
|---|---|
| 300 GPD | 17" × 23" × 35" |
| 400 GPD | 17" × 23" × 35" |
| 500 GPD | 18" × 24" × 49" |
| 750 GPD | 18" × 24" × 49" |
| 1000 GPD | 18" × 24" × 49" |
| 1500 GPD | 18" × 24" × 49" |
| 1800 GPD | 20" × 24" × 51" |
| 2500 GPD | 18" × 24" × 49" |
| 4000 GPD | 30" × 36" × 59" |
| 5000 GPD | 30" × 36" × 59" |
| 7000 GPD | 30" × 36" × 59" |
Storage Tank Sizes
| System Capacity | Recommended Tank |
|---|---|
| 200–300 GPD | 165 gal, 31"D × 56"H |
| 500–2,500 GPD | 220 gal, 42"D × 44"H |
| 4,000–7,000 GPD | 500 gal, 64"D × 46"H |
Home Water Usage
| System Capacity | Typical Home Size |
|---|---|
| 200–300 GPD | Approximately 1–1.5 bathrooms |
| 500–2,500 GPD | Approximately 1–4 bathrooms |
| 4,000–7,000 GPD | Approximately 5+ bathrooms |
Replacement Membranes & Cartridges
| System | Replacement Item | SKU |
|---|---|---|
| 300 GPD | (1) 2.5" × 14" Reverse Osmosis Membrane | CQE-RC-04111 |
| 300 GPD | (1) 2.5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04015 |
| 300 GPD | (1) 2.5" × 20" Coconut-Based Carbon Block Filter Cartridge | CQE-RC-04014 |
| 300 GPD | (1) 2.5" × 20" SMART Filter Cartridge | CQE-RC-04016 |
| 400 GPD | (1) 2.5" × 21" Reverse Osmosis Membrane | CQE-RC-04084 |
| 400 GPD | (1) 2.5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04015 |
| 400 GPD | (1) 2.5" × 20" Coconut-Based Carbon Block Filter Cartridge | CQE-RC-04014 |
| 400 GPD | (1) 2.5" × 20" SMART Filter Cartridge | CQE-RC-04016 |
| 500 GPD | (2) 2.5" × 21" Reverse Osmosis Membranes | CQE-RC-04084 |
| 500 GPD | (1) 5" × 10" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04033 |
| 500 GPD | (1) 5" × 10" SMART Filter Cartridge | CQE-RC-04027 |
| 750 GPD | (1) 2.5" × 40" Reverse Osmosis Membrane | CQE-RC-04109 |
| 750 GPD | (1) 5" × 10" SMART Filter Cartridge | CQE-RC-04027 |
| 750 GPD | (1) 5" × 10" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04033 |
| 1,000 GPD | (3) 2.5" × 21" Reverse Osmosis Membranes | CQE-RC-04084 |
| 1,000 GPD | (1) 5" × 10" SMART Filter Cartridge | CQE-RC-04027 |
| 1,000 GPD | (1) 5" × 10" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04033 |
| 1,500 GPD | (2) 2.5" × 40" Reverse Osmosis Membranes | CQE-RC-04109 |
| 1,500 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 1,500 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 1,800 GPD | (1) 4" × 40" Reverse Osmosis Membrane | CQE-RC-04086 |
| 1,800 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 1,800 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 2,500 GPD | (3) 2.5" × 40" Reverse Osmosis Membranes | CQE-RC-04109 |
| 2,500 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 2,500 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 4,000 GPD | (2) 4" × 40" Reverse Osmosis Membranes | CQE-RC-04086 |
| 4,000 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 4,000 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 4,000 GPD | (1) 5" × 20" Coconut-Based Carbon Block Filter Cartridge | CQE-RC-04036 |
| 5,000 GPD | (3) 4" × 40" Reverse Osmosis Membranes | CQE-RC-04086 |
| 5,000 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 5,000 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 5,000 GPD | (1) 5" × 20" Coconut-Based Carbon Block Filter Cartridge | CQE-RC-04036 |
| 7,000 GPD | (4) 4" × 40" Reverse Osmosis Membranes | CQE-RC-04086 |
| 7,000 GPD | (1) 5" × 20" Sediment Reusable Pleated Filter Cartridge | CQE-RC-04034 |
| 7,000 GPD | (1) 5" × 20" SMART Filter Cartridge | CQE-RC-04030 |
| 7,000 GPD | (1) 5" × 20" Coconut-Based Carbon Block Filter Cartridge | CQE-RC-04036 |
| 7,000 GPD | (1) 5" × 20" GAC Filter Cartridge (Coconut Shell Granular Activated Carbon) | CQE-RC-04106 |