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By Elorova ResearchSource checked
A documentation-based review of the manufacturer’s listing and specifications. How we reviewed it
Our assessment
The most useful starting point in this listing is its published weight (lbs): 50-265. That gives you a concrete detail to compare, but the decision still depends on the exact configuration and your intended use.
What the listing gives you
Weight (lbs)
50-265 — as listed by Crystal Quest. Use this as a comparison point for the matching model.
Voltage
110V/220V* — as listed by Crystal Quest. Use this as a comparison point for the matching model.
Configuration choices are documented
Flow Rate: 300 GPD, 400 GPD, 500 GPD, 750 GPD (all options are listed below). Configuration: Standalone, Add Storage Tank Kit (165 Gal), Add Storage Tank Kit (220 Gal), Add Storage Tank Kit (500 Gal). Pump: Brass Rotary, Stainless Steel Rotary, 1.5 HP Horizontal Pump
What deserves a closer look
Fit comes first
Plan the installation around the exact model: plumbing connections, service clearance, operating pressure and any drain or power requirements.
Look beyond the listed price
Ask for a complete installed quote and a replacement-media schedule for your water conditions. A system price alone does not describe the full ownership cost.
Compare the same configuration
The source lists 76 configurations. Use the model and part-number table below so that a size, package or optional component is not mistaken for a different specification.
These are our reading of the published information and our buying considerations. They are not measured performance results.
The specifications, in context.
Values below are published by Crystal Quest. Specifications may describe different configurations; read the model labels and compare the complete source tables in the reference section.
Weight (lbs)
50-265
Voltage
110V/220V*
Feed Connection
3/8" or 1"
Product Connection
3/8" or 1"
Operating Specs*Original technical table 1 of 4
Name
Value
Weight (lbs)
50-265
Motor (hp)
0-1.5
Voltage
110V/220V*
Hertz
50 or 60
Feed Connection
3/8" or 1"
Product Connection
3/8" or 1"
Waste Connection
1/4", 3/8", or 1"
Min. Feed Pressure (psi)
45
Min. NaCl Rejection
96%
Max. NaCl Rejection
98.5%
Min. Feed (gpm)
1-10
Max. Hardness (grains/gallon)
15
Max. TDS (ppm)
1000-2000
Operating Pressure (psi)
50-150
pH range
3-11
Dimensions (L x W x H)Original technical table 2 of 4
4000 GPD / Add Storage Tank Kit (165 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02028K165
$8,149.00
4000 GPD / Add Storage Tank Kit (220 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02028K220
$8,449.00
4000 GPD / Add Storage Tank Kit (500 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02028K550
$8,804.00
5000 GPD / Standalone / 1.5 HP Horizontal Pump
CQE-CO-02029R
$7,051.00
5000 GPD / Add Storage Tank Kit (165 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02029K165
$8,791.00
5000 GPD / Add Storage Tank Kit (220 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02029K220
$9,091.00
5000 GPD / Add Storage Tank Kit (500 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02029K550
$9,446.00
7000 GPD / Standalone / 1.5 HP Horizontal Pump
CQE-CO-02030R
$7,693.00
7000 GPD / Add Storage Tank Kit (165 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02030K165
$9,433.00
7000 GPD / Add Storage Tank Kit (220 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02030K220
$9,733.00
7000 GPD / Add Storage Tank Kit (500 Gal) / 1.5 HP Horizontal Pump
CQE-CO-02030K550
$10,088.00
Price snapshot from November 8, 2026. This is not a current offer or a stock confirmation.
Think beyond day one.
Ask for a complete installed quote and a replacement-media schedule for your water conditions. A system price alone does not describe the full ownership cost.
Match the exact model or SKU before relying on an installation diagram or replacement schedule.
Ask what the quoted package includes and what must be supplied separately.
Keep the manufacturer’s operating instructions with your service and replacement records.
Does the selected configuration match your incoming water and the flow your household needs?Our reading
The most useful starting point in this listing is its published weight (lbs): 50-265. That gives you a concrete detail to compare, but the decision still depends on the exact configuration and your intended use.
Who is Whole House Reverse Osmosis System worth considering for?Best fit
Households comparing treatment at the water entry point, with a water analysis and space for a permanent installation.
What are the configuration constraints and installation requirements?Fit & plumbing
Plan the installation around the exact model: plumbing connections, service clearance, operating pressure and any drain or power requirements.
What are the ongoing maintenance and filter replacement considerations?Ownership costs
Ask for a complete installed quote and a replacement-media schedule for your water conditions. A system price alone does not describe the full ownership cost.
Go back to the source.
The full product information below is supplied by Crystal Quest, including its own descriptions and claims. We have reorganized the typography and tables for reading. This material is separate from Elorova’s assessment.
Product overviewManufacturer material
Whole House Reverse Osmosis Systems
The Ultimate Filtration Experience
The Crystal Quest Whole House Reverse Osmosis System is the highest performing RO System on the market backed by over 30 years of experience. It has been designed and engineered to provide purified water throughout your entire home for many years if properly maintained. Every system is tested in-house before it is shipped and arrives operational, requiring minimal plumbing. As long as the prefilters and membranes are changed regularly, these systems should last from 15-20 years.
All our RO systems are designed to be modular, require little operational maintenance, and be economical. We understand that this is a long-lasting investment for both your family and home, and we aim to make sure you are getting the best possible return on your investment!
Endless Possibilities
It isn't always easy finding a perfect fit, but with 9 different flow rates to choose from, we have a system that will meet your homes' exact needs.
Benefits of Crystal Quest Whole House RO Systems
Compact, Space Saving
Easily Accessible Components
Expandable and Lightweight Design
Fully Equipped and Customizable
Low Operational Costs
Low cost of Maintenance
Easily Maintenance and servicing
Factory Tested and Preserved
CE Compliant
Made in the USA
Scientific World Products ISO Certified Components
Storage Tank Kit Components
The RO System - A commercial-grade RO System ranging from 200- 7,000 GPD. Every system is equipped with prefiltration to extend the life of the membranes.
Water Tank - Water is stored in an atmospheric water storage tank (165, 220, or 500 gallons) that is sized depending on your system, needs and space.
Pump - As water is used within your home, it will be pumped from the tank as needed.
Float Switches - Used within your water tank, this regulates when your RO System needs to cut on and off depending on the water level in your tank.
Additional shipping charges may apply for orders with 500-gallon storage tanks
Optional Add-Ons
12 GPM UV Water Sterilizer
For added protection, we offer a premium UV sterilizer to prevent microbiological contamination.
Alkalizing Postfilter Options
With various options to choose from, enhance the alkalinity of your water before it enters your home with the added benefits of a natural Alkalizing, Mineralizing, and Oxidation Whole House filter.
Remineralizer System
In order to provide the best quality of water for our customers, we are offering an optional add-on to our whole house reverse osmosis system. This specially designed unit, based on your Gallons Per Day (GPD) consumption, adds essential minerals back into your purified water and adjusts its pH to prevent any potential damage to plumbing/fixtures and ensure healthier and tastier consumption. The table below gives an overview of our remineralizer system options suitable for different consumption needs and preferences for water alkalinity.
300 - 2500 GPD
Single Big Blue Alkalizer/Remineralizer
4000 - 5000 GPD
Remineralizer System (1.5 cubic feet)
7000 GPD
Remineralizer System (2.0 cubic feet)
(Customers wanting highly alkaline water have the option to use a larger remineralizer system than recommended.)
Pure reverse osmosis water contains no minerals and can sometimes be slightly acidic. Water with a pH below 6.4 is not recommended for human or livestock consumption. The use of a remineralizer as a post treatment will enhance the pH and alkalinity of the water and avoid potential damage to plumbing/fixtures caused by acidic water.
Highly alkaline water may have a taste that us unpleasant to some. This taste can be described as a plastic, metallic, chlorine or fish like taste.
Upgrades:
All systems include a standard with a wide range of features. There are various options and upgrades available to accommodate a diverse range of water treatment applications. Listed below is a selection of the most popular upgrades.
Stainless-Steel Rotary Vane Pump: Offers a longer lifespan and increase resistance to high TDS feed water and corrosive materials, such as dosing chemical and antiscalants.
Concentrate recycle valve: Allows for an increase of RO systems efficiency by recycling back wastewater into the feed stream and increasing the system recovery
SWP Digital Dual TDS Controller: Allow for simultaneous monitoring of both feed TDS and permeate TDS levels, helping to monitor the RO system salt rejection and membrane performance.
SWP Digital TDS Controller: Allow for monitoring either feed TDS and Permeate TDS levels
SWP Digital TDS/Conductivity Controller: Allow for the monitoring of the RO permeate water TDS and conductivity levels, useful in evaluating overall system performance IF Computer Controller with feed flush: Allow for pre-treatment lockout functionality, tank level input, features a convenient LED status display indicator for increase ease of use.
S150 Computer Controller with Feed Flush: Allow for pre-treatment lockout functionality, tank level input, features a convenient LED status display, and alarm function. (only on 4000 gpd and up)
Chemical Pump Outlet: Provide an integrated power source with the RO system for the connection of a chemical feed pump.
Blending Valve: Allows for a mixture of feed water into final RO permeate water to achieve desirable permeate TDS.
Permeate Sample Port: Allows for evaluation of individual membrane performance in on RO system and aids in system troubleshooting and maintenance.
240V 50-60Hz or 110V 50-60Hz: Allow for selecting sufficient voltage and hertz use requirement.
Single Wood Crate
Notes
All systems are rated with 77 Degree Fahrenheit water and TDS (total dissolved solids) under 2000. Please refer to the specifications of the exact system you plan to purchase. If your water falls outside of these constraints, you should contact us for more recommendations.
Experience The Crystal Quest Difference
Technical specificationsManufacturer material
Daily output
300 to 7,000 GPD; choose under Flow Rate
Rating conditions
77 F feed water; colder water or higher TDS lowers the daily output
Household size
Suggested starting ranges: 1 to 2 people, 300 to 1,000 GPD; 3 to 4 people, 1,500 to 4,000 GPD; 5 to 7 or more, 4,000 to 7,000 GPD
Membrane
1 to 4 per system by size: 2.5 x 14, 2.5 x 21, 2.5 x 40 or 4 x 40 in (see the Parts tab for your size)
Membrane type
Thin film composite (TFC), freshwater
Salt rejection
96 to 98.5% (NaCl)
Minimum feed flow
1 to 10 GPM, by size
Maximum iron
0.05 ppm
pH range
3 to 11
Operating temperature
40 to 105 F
Pump
Rotary vane pump, brass or stainless steel, on a 1/2 HP motor (300 to 1,000 GPD) or a 3/4 HP motor (1,500 to 2,500 GPD); horizontal pump (4,000 to 7,000 GPD)
Power
110 V standard; 220 V on request
Connection size
Product water 3/8 or 1 in; drain 1/4, 3/8 or 1 in, by size
Drain needed
Yes: an open drain for the concentrate line, with no restriction or back pressure
Storage tank
Optional 165, 220 or 500 gallon atmospheric tank kit with a delivery pump and float switches; any kit fits any size
Dimensions
Varies by size; see Full specifications by size below
Weight
Varies by size, up to 265 lb
Exact values vary by size: see the manual for your system.
Measure door openings before choosing a tank.
Operating Specs*
Name
Value
Weight (lbs)
50-265
Motor (hp)
0-1.5
Voltage
110V/220V*
Hertz
50 or 60
Feed Connection
3/8" or 1"
Product Connection
3/8" or 1"
Waste Connection
1/4", 3/8", or 1"
Min. Feed Pressure (psi)
45
Min. NaCl Rejection
96%
Max. NaCl Rejection
98.5%
Min. Feed (gpm)
1-10
Max. Hardness (grains/gallon)
15
Max. TDS (ppm)
1000-2000
Operating Pressure (psi)
50-150
pH range
3-11
*Please refer to the operating manual of each specific system for exact values. All systems come standard as 110V unless otherwise requested.
Dimensions (L x W x H)
Residential RO’s
Dimensions (L x W x H)
300 GPD
17” x 23” x 35”
400 GPD
17” x 23” x 35”
500 GPD
18” x 24” x 49”
750 GPD
18” x 24” x 49”
1,000 GPD
18” x 24” x 49”
1,500 GPD
18” x 24” x 49”
1,800 GPD
20” x 24” x 51”
2,500 GPD
18” x 24” x 49”
4,000 GPD
30” x 36” x 59”
5,000 GPD
30” x 36” x 59”
7,000 GPD
30” x 36” x 59”
Storage Tank Sizes
System
Tank Size*
200-300 GPD
165 Gallons (31"D x 56" H)
500-2,500 GPD
220 Gallons (42"D x 44" H)
4,000-7,000 GPD
500 Gallons (64"D x 46" H)
*When considering the size of the tank, measure the door opening before installation.
Home Water Usage
Flow Rate
Bathrooms
200-300 GPD
1 - 1.5
500-2,500 GPD
1 - 4
4,000-7,000 GPD
5+
Included parts & replacementsManufacturer material
Complete replacement pack, 200 or 300 GPDSKU CQ-RC-0002P-C300
Qty 0
$364.75
Compare replacement parts for every size
Compare replacement parts for every size
Flow Rate
Parts in one set
Set price
300 GPDSelected$374.75
Quantity 1 × Pleated Cellulose Sediment Cartridge, 2-7/8" x 20" / Single $31.50
Quantity 1 × SMART Filter Cartridge, 2-7/8" x 20" / SMART Plus / Single $158.00
Quantity 1 × Coconut Based 5-Micron Carbon Block Filter Cartridge, 2-7/8" x 20" / Single $31.50
Quantity 1 × 2.5" x 14" Freshwater Reverse Osmosis Membrane, Single $153.75
$374.75
400 GPDSelected$383.25
Quantity 1 × Pleated Cellulose Sediment Cartridge, 2-7/8" x 20" / Single $31.50
Quantity 1 × SMART Filter Cartridge, 2-7/8" x 20" / SMART Plus / Single $158.00
Quantity 1 × Coconut Based 5-Micron Carbon Block Filter Cartridge, 2-7/8" x 20" / Single $31.50
Quantity 1 × 2.5" x 21" Freshwater Reverse Osmosis Membrane, Single $162.25
$383.25
500 GPDSelected$518.00
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 9-3/4" / Single $34.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 9-3/4" / SMART Plus / Single $159.00
Quantity 2 × 2.5" x 21" Freshwater Reverse Osmosis Membrane, Single $324.50
$518.00
750 GPDSelected$442.50
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 9-3/4" / Single $34.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 9-3/4" / SMART Plus / Single $159.00
Quantity 1 × 2.5" x 40" Freshwater Reverse Osmosis Membrane, Single $249.00
$442.50
1000 GPDSelected$680.25
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 9-3/4" / Single $34.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 9-3/4" / SMART Plus / Single $159.00
Quantity 3 × 2.5" x 21" Freshwater Reverse Osmosis Membrane, Single $486.75
$680.25
1500 GPDSelected$783.50
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 2 × 2.5" x 40" Freshwater Reverse Osmosis Membrane, Single $498.00
$783.50
1800 GPDSelected$571.85
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 1 × 4" x 40" Freshwater Reverse Osmosis Membrane, Single $286.35
$571.85
2500 GPDSelected$1,032.50
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 3 × 2.5" x 40" Freshwater Reverse Osmosis Membrane, Single $747.00
$1,032.50
4000 GPDSelected$907.70
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 1 × Coconut Based 5-Micron Carbon Block Filter Cartridge, 4-5/8" x 20" / Single $49.50
Quantity 2 × 4" x 40" Freshwater Reverse Osmosis Membrane, Single $572.70
$907.70
5000 GPDSelected$1,194.05
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 1 × Coconut Based 5-Micron Carbon Block Filter Cartridge, 4-5/8" x 20" / Single $49.50
Quantity 3 × 4" x 40" Freshwater Reverse Osmosis Membrane, Single $859.05
$1,194.05
7000 GPDSelected$1,562.40
Quantity 1 × Pleated Cellulose Sediment Cartridge, 4-5/8" x 20" / Single $44.50
Quantity 1 × SMART Filter Cartridge, 4-5/8" x 20" / SMART Plus / Single $241.00
Quantity 1 × GAC Filter Cartridge (Coconut Shell Granular Activated Carbon), 4-5/8" x 20" / Single $82.00
Quantity 1 × Coconut Based 5-Micron Carbon Block Filter Cartridge, 4-5/8" x 20" / Single $49.50
Quantity 4 × 4" x 40" Freshwater Reverse Osmosis Membrane, Single $1,145.40
$1,562.40
Set price is the total of the parts listed, at their current prices.
Parts included
Reverse osmosis unit, assembled and tested in-house before it ships
Pre-filter housings with their cartridges: 2 to 4 by size (sediment and SMART Plus on every size, plus a carbon block on 300, 400, 4,000, 5,000 and 7,000 GPD and a GAC stage on 7,000 GPD)
Thin film composite (TFC) membranes, pre-loaded in the membrane housings: 1 to 4 by size
High-pressure pump: rotary vane on a 1/2 HP motor (300 to 1,000 GPD) or a 3/4 HP motor (1,500 to 2,500 GPD); horizontal pump on 4,000 to 7,000 GPD
Pre-filter pressure gauges and a concentrate pressure gauge
Permeate and concentrate flow meters
Inlet solenoid valve, concentrate control valve and low pressure switch
User's manual, the system's test results and a filter housing wrench
With a storage tank kit: an atmospheric storage tank (165, 220 or 500 gallon), a delivery pump and float switches
Installation & maintenanceManufacturer material
Set the system on a level floor and secure it so it cannot vibrate or move; a rubber mat under it helps.
Before start-up, check that no plumbing or electrical connection came loose in shipping.
Connect the feed water line to the inlet solenoid valve next to the pre-filter housings, and keep a smooth, steady supply of feed water.
Connect the purified water line to the storage tank or point of use with no back pressure, using plumbing suited to purified water: RO water runs 1 to 2 pH points lower than the feed and can attack copper pipe.
Run the concentrate line to a drain with no restriction or back pressure.
Check that the power supply matches the system and has a protective earth ground. We recommend a licensed electrician wire it to local and national electrical codes.
With a storage tank kit, install the float switch in the tank and connect it to the system's tank level connections. These are dry contacts: never apply power to them.
Purge the system with the purified water line sent to drain until no bubbles show in the concentrate flow meter. The settings differ by size, so follow the manual for yours: 500 to 2,500 GPD purge with the power on and the concentrate valve half open; 300, 400 and 4,000 to 7,000 GPD purge with the power off, the concentrate valve fully open, the pump bypass valve closed and the solenoid valve's bypass lever offset.
On 300, 400 and 4,000 to 7,000 GPD, also flush to drain for about 15 minutes with the concentrate valve fully open, then reopen the pump bypass valve and return the solenoid bypass lever before the power goes on.
Start the system and set the concentrate valve, and the pump bypass valve where your size has one, for the rated flow and pressure. Never exceed the pressure rating of the membrane housings.
Check for leaks. After one hour, shut the system down, send the purified water back to the tank or point of use, and turn the system back on.
Record the readings daily for the first week, then once a week.
Elorova researched the public Crystal Quest product listing, its published configuration data, source photographs and linked documents. The source page was checked on .
We have not purchased or installed this product, conducted a laboratory evaluation, or independently confirmed the manufacturer’s treatment and certification claims. We do not copy retailer star ratings into an Elorova rating.
Our research is a snapshot. Check the merchant’s current documentation, warranty, configuration, price and delivery terms before deciding. Read our editorial policy.
