when is time to replace filters, do I have to replace o-rings too??

Hello, the Ultimate FILTER-SET are typically replaced about once a year depending on water quality and usage going through the filters. The O-rings are typically replaced about every 3 years, but it is always good to have them on hand as backups just in case. If you need any help or assistance, feel free to give us a call we are happy to help! Best Regards, APEC Support Team 800-880-4808.

does this item come with the replacement O-rings too?

The FILTER-SET only includes the replacement filters, it does not include the replacement O-rings.

will this fit ROES-50 ?

They will fit the ROES-50 and most of the systems that uses industry standard size.

Will these filter out Cryptosporidia?

Cryptosporidia are 3 t0 4 microns in diameter. Reverse osmosis filtration membranes have pore sizes around 0.0001 microns. Work it out for yourself.

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APEC Water Systems ULTIMATE Series US Made Stage 1, 2 & 3 Replacement Filter For Undersink System(FILTER-SET)

Product ID: 279236744

Details

Brand
APEC WATER
Included components
FILTER-SET
Installation type
Under Sink
Material
Carbon
Special features
Multi Stage

⏳12+ months filter lifespan

🛡️3-stage advanced filtration

🇺🇸100% USA-made quality

Description

💧 Elevate your hydration game with crystal-clear confidence!

UNIVERSAL COMPATIBILITY - Fits all standard 10" under-sink RO systems including APEC models
LONG LASTING PERFORMANCE - Filters designed to last over 12 months, reducing maintenance hassle
TRIPLE STAGE PURITY SHIELD - Sediment + dual carbon blocks for unmatched water clarity
SUPERIOR CARBON BLOCK TECHNOLOGY - Extruded carbon blocks outperform GAC filters—no leaks, no bypass
MADE IN THE USA TRUSTED WORLDWIDE - Premium craftsmanship supporting local manufacturing

The APEC Water Systems ULTIMATE Series Replacement Filter Set is a premium 3-stage filtration solution made in the USA, featuring a high-capacity polypropylene sediment filter and two extruded carbon block filters. Designed for compatibility with all standard 10" under-sink reverse osmosis systems, it delivers superior removal of sediment, chlorine, odors, and VOCs while lasting over 12 months to minimize filter changes and maximize water purity.

Specifications

ASIN	B00HV128WY
Best Sellers Rank	#73,355 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #221 in Replacement Water Filters
Brand Name	APEC WATER
Customer Reviews	4.8 4.8 out of 5 stars (2,511)
Filter Life Cycle	12 Months
Global Trade Identification Number	00854961005044
Included Components	FILTER-SET
Installation Type	Under Sink
Item Type Name	APEC Water Systems FILTER-SET US Made Double Capacity Replacement Stage 1-3 For ULTIMATE Series Reverse Osmosis System
Item Weight	2 Pounds
Manufacturer	APEC Water Systems
Material Type	Carbon,Polypropylene
Model Name	FILTER-SET
Model Number	FILTER-SET
Number of Items	1
Number of Packs	3
Other Special Features of the Product	Multi Stage Filtrartion
Part Number	FILTER-SET
Power Source	Hydraulic-powered
Purification Method	Reverse Osmosis
UPC	854961005044
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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