Enjoy cleaner, better-tasting drinking water directly from your kitchen faucet with the CastleGuard PLUS 50. This
under-sink reverse osmosis system combines sediment filtration, dual carbon block prefiltration, a high-
performance 50 GPD reverse osmosis membrane, final polishing filtration, and pH remineralization. The included
3.2-gallon storage tank keeps treated water available on demand for drinking, cooking, coffee, tea, and ice.
Original price was: $562.50.$375.00Current price is: $375.00.
Reverse osmosis technology helps reduce dissolved minerals and other unwanted substances that may affect
drinking-water quality, clarity, taste, and odor.
Use filtered water for coffee, tea, ice, soups, sauces, and everyday food preparation.
The under-sink configuration provides filtered water from a dedicated drinking-water faucet without relying on
countertop pitchers or bottled water.
Enjoy peace of mind knowing the filtration process improves your water without adding chemicals.
Enjoy cleaner drinking water while reducing reliance on single-use plastic. Each set of filters can replace the
equivalent of more than 2,750 plastic water bottles.
Filtered water helps bring out the natural flavors in coffee, tea, soups, sauces, and meals—giving you a simple
advantage in the kitchen that your guests will notice.
| Specifications | CG-RO-50F |
|---|---|
| System Type | UNDER-SINK REVERSE OSMOSIS DRINKING WATER SYSTEM |
| Production Capacity | 50 GPD |
| Sediment Filter | 5-MICRON POLYPROPYLENE |
| Carbon Prefilters | TWO MATRIX CTO CARBON BLOCK FILTERS |
| RO Membrane | TFC 50 GPD |
| Final Filter | INLINE GAC POLISHING FILTER |
| Remineralization | pH REMINERALIZATION CARTRIDGE |
| Storage Tank | 3.2-GALLON NSF-RATED |
| Connections | PUSH-CONNECT FITTINGS |
| Faucet Tubing | 3/8" |
| Filter Replacement | EVERY 12 MONTHS |
Designed to produce up to 50 gallons of treated water per day. Actual production may vary based on incoming pressure, temperature, and water quality.
Sediment, dual carbon block, reverse osmosis, polishing, and remineralization components work together to improve drinking-water quality.
The supplied CastleGuard content states that the system reduces up to 97% of total dissolved solids. The confirmed same-system contaminant chart also provides the typical reduction percentages listed below. Actual results may vary based on incoming water conditions and system maintenance.
The following percentages are applicable to the CastleGuard PLUS 50 because the client confirmed it is the same reverse osmosis system referenced by the source page. These are typical reductions; actual performance may vary with feed-water quality, pressure, temperature, membrane condition, and maintenance.
The system is designed for straightforward annual cartridge replacement, rather than replacement every three to six months.
The compact configuration helps maximize cabinet space while the 3.2-gallon storage tank provides water on demand.
Push-connect fittings, 3/8-inch tubing, an angle-stop adapter valve, filter wrench, and installation hardware are identified in the source materials.
Annual Replacement Filter Kit
50 GPD Reverse Osmosis Membrane
The CastleGuard PLUS 50 combines sediment filtration, dual carbon block prefiltration, reverse osmosis, final polishing, and pH remineralization to improve drinking-water quality, clarity, taste, and odor.
A TFC reverse osmosis membrane provides up to 50 GPD of treated water, while the included 3.2-gallon storage tank keeps water readily available for drinking, cooking, coffee, tea, ice, and food preparation.
Designed to fit conveniently under the kitchen sink, the system features quick-connect components and a clear sediment housing for easy inspection. The included remineralization cartridge helps restore mineral characteristics and optimize the finished water after RO treatment.
The system is rated to produce up to 50 gallons of treated water per day. Actual production may vary based on incoming pressure, temperature, dissolved-solids concentration, and overall water quality.
Yes. It includes a 3.2-gallon NSF-rated reverse osmosis storage tank.
Yes. The system includes a pH remineralization cartridge that helps optimize the mineral characteristics of thefinished water.
The Excel workbook indicates that each cartridge should be replaced every 12 months. Actual filter life may vary based on usage and incoming water quality.
Faucet inclusion is currently being confirmed. The system is compatible with most reverse osmosis faucets.
The system is designed to reduce dissolved minerals and a wide range of contaminants. Typical reduction percentages are provided in the contaminant reduction table in this document, including lead 97%, fluoride 98%, chlorine 99.9%, arsenic 95%, nitrate 89%, and many others. Actual performance may vary with feed-water conditions and maintenance.
The supplied materials identify push-connect fittings, 3/8-inch faucet tubing, an angle-stop adapter valve, filter wrench, and installation hardware. Final package contents should be confirmed before publication.
The supplied materials identify an NSF-rated storage tank and NSF components. Complete-system certification and the applicable NSF/ANSI standard have not yet been provided.
Incoming water pressure pushes water through a semipermeable membrane. Treated water passes through to the storage tank, while many dissolved particles remain in the concentrated stream and are directed to the drain.
CastleGuard Water Systems Warranty Policy
The CastleGuard Commitment to You
At CastleGuard Water Systems, we stand behind the quality, reliability, and performance of every system we sell. We are committed to transparency, long-term value, and making sure you have confidence in your investment.
Lifetime Limited Warranty
To the original purchaser (“Customer”), CastleGuard Water Systems (“CastleGuard”) warrants that all core system components—including tanks, housings, fittings, valves, bypass assemblies, and filtration media—will be free from defects in materials and workmanship for the lifetime of the system under normal residential use and proper installation.
Additional Component Coverage
To ensure full protection across your system:
• 10-Year Limited Warranty: Large mineral tanks and retention tanks (14” or larger)
• 7-Year Limited Warranty: Electronic control heads and solid-state components
Performance You Can Trust
CastleGuard systems are designed to deliver reliable water filtration performance when installed and maintained according to our guidelines. Specific performance expectations (such as chlorine or contaminant reduction) apply only under proper water conditions and routine maintenance.
What This Warranty Does Not Cover
To keep things clear and fair, this warranty does not apply to issues caused by:
• Improper installation, handling, or misuse
• Physical damage, alterations, or unauthorized modifications
• Failure to follow installation or maintenance instructions
• Lack of routine maintenance (including timely filter/media replacement)
• Water conditions outside recommended system specifications
• Acts of nature (fire, flood, freezing, etc.)
Well Water Requirements
If your system is installed on private well water, certain conditions must be met to maintain warranty coverage:
• No hydrogen sulfide (rotten egg odor), unless properly treated
• No oil contamination
• Copper levels below 1.30 mg/L
• Controlled levels of iron and manganese
If these conditions are present, pre-treatment is required. Our team is happy to help guide you to the right setup.
Simple Warranty Claim Process (Aligned with Returns Policy)
We’ve made our process straightforward and consistent with our shipping & returns policy:
1. Contact Us First – Reach out to CastleGuard Customer Support to begin your claim.
2. Get Authorization (RAC) – A Return Authorization Code (RAC) number is required before sending any item back.
3. Return the Item
– Items may need to be returned for inspection
– Return shipping instructions will be provided
– Standard return shipping applies; expedited shipping is optional at customer expense
4. Repair or Replacement – Once approved, CastleGuard will repair or replace the defective component.
Shipping Alignment
• Warranty replacements are processed and shipped in accordance with our standard order processing timelines (typically 3–5 business days)
• Standard shipping is included unless otherwise specified
• Expedited shipping options are available at the customer’s request and expense
Customer Responsibilities
To keep your warranty active:
• Follow all installation and operating instructions
• Perform routine maintenance as recommended
• Use the system only within designed water conditions
• Retain proof of purchase
Important Limitations
• Warranty applies only to the original purchaser and is non-transferable
• Coverage is valid only at the original installation location
• Warranty begins on the date of delivery
• Labor, plumbing, and service costs are not included
Limitation of Liability
CastleGuard Water Systems’ responsibility is limited to repair or replacement of defective components.
We are not liable for:
• Incidental or consequential damages
• Property damage or water damage
• Loss of use or system downtime
Total liability will not exceed the product’s original purchase price.
Disclaimer
This warranty replaces all other warranties, express or implied, including warranties of merchantability or fitness for a particular purpose.
Governing Law
This policy is governed by the laws of the State of Florida.
We’re Here to Help
Our goal is to make clean, reliable water simple. If you have questions about your system, water conditions, or warranty coverage, our team is here to help every step of the way.
CastleGuard Water Systems Shipping & Returns Policy
Shipping Policy / Free Shipping (Continental USA)
CastleGuard Water Systems offers free economy ground shipping on most orders over $199.00 within the continental United States.
Orders are typically processed and shipped within 3–5 business days from the date of purchase.
Orders placed over the weekend or on holidays will begin processing on the next business day. During high-volume periods, processing times may be extended without prior notice. Once shipped, estimated delivery times range from 3–7 business days, depending on the destination and carrier performance.
Shipping outside the continental United States, including Alaska, Hawaii, and Canada, will incur additional charges, which are calculated at checkout. The customer is responsible for any applicable duties, taxes, or import fees.
Billing Information
Charges will appear on your credit card statement as CastleGuard Water Systems.
Well Water System Orders
CastleGuard Water Systems reviews well water system orders to promote compatibility with the customer’s water conditions; however, final responsibility for system selection rests solely with the purchaser.
• The Company strongly recommends submission of a current water test from a certified laboratory prior to purchase.
• Orders may be placed on hold pending receipt and review of water test results.
• If additional treatment or system modifications are recommended, the customer will be notified prior to fulfillment.
• Orders placed without a valid water test may be processed at the customer’s request; however, the customer assumes all risks related to system compatibility, performance, and effectiveness.
Processing and shipping timeframes begin only after any required review has been completed.
Tracking Your Order
A tracking number will be provided via email once the order has shipped.
Tracking updates are provided by third-party carriers and may be delayed. CastleGuard Water Systems is not responsible for delays or inaccuracies in carrier tracking systems. Please allow up to 48 hours for tracking updates to appear.
Undeliverable Packages
If an order is returned as undeliverable:
• A refund will be issued less all applicable shipping charges and handling costs.
• CastleGuard Water Systems is not responsible for delivery failures caused by incorrect, incomplete, or outdated address information provided by the customer.
• Orders will not be automatically reshipped. Customers must place a new order to receive the product.
Customers must contact Customer Service if:
They believe delivery may fail
They have not received confirmation of a returned shipment
More than three (3) weeks have passed since the estimated delivery date
Refunds are processed within 7–10 business days after receipt and inspection of the returned package.
Refused Deliveries
If a shipment is refused for reasons not attributable to CastleGuard Water Systems:
• The customer is responsible for all return shipping charges
• A restocking fee may be applied in accordance with this policy
All original shipping costs are non-refundable.
Damaged or Lost Shipments
All claims must comply with the following:
• Small-package shipment claims must be submitted within 10 calendar days of delivery
• Freight shipments must be inspected at delivery, and any visible damage must be noted on the carrier’s delivery receipt at the time of delivery
Failure to properly document damage at delivery may result in denial of the claim.
CastleGuard Water Systems reserves the right to require photographic evidence and supporting documentation. Claims processing may take 5–14 business days or longer, depending on the carrier’s investigation timeline.
Order Cancellations & Price Adjustments
Orders may be canceled only prior to entering fulfillment.
• Fulfillment begins when a shipping label is created
• Once fulfillment begins, orders cannot be canceled, modified, or intercepted
• Orders in fulfillment must follow the return process
Cancellation requests must be made by phone. Email requests are not guaranteed to be processed in time.
CastleGuard Water Systems does not offer price adjustments or retroactive discounts. Promotional pricing applies only during the active promotional period and while supplies last.
Approved refunds for cancellations are processed within 7–10 business days.
Return Policy
General Returns
CastleGuard Water Systems accepts returns within ninety (90) days of the original purchase date, subject to the following conditions:
• Items must be unused, uninstalled, and in original packaging
• Products must be free from damage, alteration, or signs of use
Additional conditions:
• Original shipping charges are non-refundable
• Return shipping costs are the responsibility of the customer
• All returns are subject to inspection and approval prior to refund issuance
• Taxes, duties, brokerage fees, and shipping charges are non-refundable
CastleGuard Water Systems reserves the right to deny any return that does not meet these conditions.
Refunds are processed within 7–10 business days following inspection and approval.
Restocking Fees
• A minimum 10% restocking fee applies to all approved non-defective returns
• A restocking fee of up to 25% may be applied for returns requiring additional handling, repackaging, or for refused shipments
Restocking fees are assessed at the sole discretion of CastleGuard Water Systems.
Performance Guarantee
CastleGuard Water Systems offers a 6-Month Satisfaction & Performance Guarantee on eligible products.
• The Company will provide troubleshooting assistance, replacement parts, or corrective recommendations as deemed appropriate
• This guarantee is limited to product performance and does not constitute a full refund policy for installed systems
Installed systems are not eligible for return unless confirmed defective by CastleGuard Water Systems.
For verified defective products:
• Return shipping will be covered by the Company
• A refund or replacement will be issued at the Company’s discretion
• Installation, labor, and related costs are expressly excluded
Product Exchanges
For defective or damaged items:
• Customer must notify CastleGuard Water Systems within 30 days of delivery
• A Return Authorization Code (RAC) and prepaid return label will be issued upon approval
• Replacement will be shipped after inspection and verification
For non-defective exchanges:
• The original item must be returned in accordance with this policy
• A new order must be placed for the replacement item
Limitation of Liability
To the fullest extent permitted by law, CastleGuard Water Systems shall not be liable for any indirect, incidental, consequential, or special damages, including but not limited to water damage, property damage, loss of use, or installation-related costs arising from the purchase or use of its products.
Summary
This policy establishes clear terms governing shipping, returns, and product support. By placing an order, the customer agrees to all terms outlined herein.
CastleGuard Water Systems is committed to delivering a seamless experience built on transparency, efficiency, and customer satisfaction with every order.
