Refurbished Under-Sink & Countertop Filtration — 44 Deals

About Under-Sink & Countertop Filtration deals

44 open-box and refurbished Under-Sink & Countertop Filtration deals are live for shoppers in the US right now, with discounts averaging 22% off retail. Prices range from $17 to $1,906, and every listing shows the seller's condition grade, current price, savings versus list price and stock status — so you can compare before you buy. Top brands on sale include Brio, DREO, DELTA and Aquasana. Inventory syncs from Amazon and other partner stores throughout the day; open-box stock is usually one-of-a-kind, so the best deals sell out fast.

44 live US listings.

USA

Dreyoo

8" Tall 9 Inch Stand Compatible with Berkey Water Filter

Used

$22³²

$24.99

-11% Save $2.67

Update: 6 hours 48 mins

$937⁷²

OEMIRY UV Reverse Osmosis System, Stainless Steel 500GPD RO Water Filter

$183⁹¹

Waterdrop TSB-ALK 8 Layer Slightly Alkaline Under Sink Water Filter System

$98¹²

iSpring US31KF-PF 3-Stage PFAS/PFOA Removal Under-Sink Water Filter System

$148³⁵

Avalon Countertop Water Filter System, NSF Certified Dual Filtration, Non Electric Dispenser with Drip Tray, Black

$129⁰⁰

2-Stage Whole Home Water Filtering System Chlorine & Sediment Reducing, 20x4.5 GAC & Sediment Filters Included with Gauge & Release, Wrench, Bracket

$136²⁸

Delta Clarifi Advanced 2 Stage Under Sink Water Filter System, Water Filter for Kitchen Sink Beverage Faucet, DWQ3502020

$143¹¹

Aquasana Under Sink Water Filter | 3-Stage Max Flow Filtration | Reduces up to 99.99% of 78 Contaminants - PFAS, Lead, Chlorine, Cysts, & More | Under Counter Drinking Water Filter | AQ-6300M-NF

$165⁴⁹

Aquasana Under Sink Water Filter | 3-Stage Claryum Filtration | Reduces up to 99.99% of 78 Contaminants Including PFAS, Lead, & Chlorine | Under Counter Drinking Water Filter | AQ-6300-NF

$129⁶⁷

iSpring RCD100HCG Hot & Cold Reverse Osmosis System Countertop, Alkaline RO Water Filter Dispenser, 9 Temperature & 6 Dispensing Volume Options, TDS & Filter Lifespan Monitor, Plug and Play

$404⁰²

Brio SIMPL W2 Countertop Water Dispenser w/Refillable 2.5L Water Tank, 2-in-1 Sediment & Carbon Filter Included, Room Temp., LED Display w/Touch Buttons, No Plumbing Necessary, White

$126⁵¹

KOVIET U1 Pro Reverse Osmosis System, 800GPD Tankless Reverse Osmosis Water Filter, 10-Stage Under Sink RO Water Filtration System, NSF/ANSI 42&58 Certified with Smart LED Faucet, 3:1 Pure to Drain

$121³¹

KRAUS Purita 2-Stage Under Sink Water Filtration System with Digital Display Monitor, FS-1001

$128⁷⁷

Brio 3-Stage Digital Instant Hot Water Undersink Dispenser System with Dual Flow Faucet in Rose Gold, Dispenses Hot & Room, NSF/ANSI 42, 53, 61 & 372, Filters Included

$964⁵⁷

Delta Faucet Clarifi Under Sink Reverse Osmosis Water Filter System, 6-Stage RO Water Filter, Tankless Water Filtration System, Undersink Water Filter, Reverse Osmosis Filter System, DWQ1001012

$591⁸⁷

Under Sink Water Filter, House Faucet Water Filter for Kitchen Sink, Under Counter Direct Connect to Kitchen Faucet, Reduces 99% Chlorine, Bad Taste & Odor, 10000 Gallons, By DESENRUIS

$31²⁰

VonWater CT910H Reverse Osmosis Water Filter Countertop, 3S Instant Hot RO Water Filtration System, 7-Stage Water Purifier with Portable Pitcher, NSF/ANSI 372,42,58, Reduce TDS PFAS, No Installation

$200⁰⁰

VonWater 7-Stage Countertop Reverse Osmosis Water Filter System, 528 Gallons RO Water Filtration with Portable Pitcher, NSF/ANSI 372,53,42,58, Reduce TDS PFAS, 5 Volumes, 3:1 Pure to Drain CT910

$179⁹⁹

BLANCO 443275 Under Sink Water Filtration System - Microplastic S Filter

$172⁶⁷

Water Filter Dispenser Stand with Drip Tray - 7.9''W x 14.9''D x 7''H, Metal Stand Designed for Brita Filter, Compatible with Zero Water, PUR, Waterdrop etc.

$29⁹⁹

KRAUS® Purita™ Single Handle Drinking Water Filter Faucet for Reverse Osmosis or Water Filtration System in Spot-Free Stainless Steel/Matte Black, FF-100SFSMB

$63²⁹

NSF Certification Lead-Free Water Filtration Reverse Osmosis Faucet (Brushed Nickel) Advanced RO Tap for Drinking, Kitchen Sink Cooking, Cleaning | Safe, Healthier

$38¹³

3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty, 100,000 Gallon

$398¹⁸

Under-Sink & Countertop Filtration open-box FAQ

How much can I save on open-box Under-Sink & Countertop Filtration?

Discounts on Under-Sink & Countertop Filtration at OpenBoxFox currently average 22% off retail across 44 live listings, with prices from $17 to $1,906. Savings are measured against the manufacturer's list price.

Are open-box and refurbished Under-Sink & Countertop Filtration safe to buy?

Yes — every listing shows the seller's condition grade (from open-box "Like New" to certified refurbished) before you buy. You purchase directly from the seller, such as Amazon, and that seller's standard return policy applies to your order.

Which Under-Sink & Countertop Filtration brands are on sale open-box right now?

The most-listed brands in Under-Sink & Countertop Filtration at the moment are Brio, DREO, DELTA, Aquasana and iSpring. New open-box inventory arrives daily, so brand availability changes often.

How often are Under-Sink & Countertop Filtration deals updated?

OpenBoxFox syncs Under-Sink & Countertop Filtration inventory from partner stores throughout the day. Sold-out listings are removed automatically and new deals appear shortly after we find them.

Shop more: Refurbished Tools & Home Improvement · Refurbished Kitchen & Bath Fixtures · Refurbished Water Filtration & Softeners