Ultrafiltration • 5 Filter Replacement Set

Wellsys • Flowline • Bluline • Global • Hyundai • Crystal Quest • International H2O • Aquaverve • Pure Water Coolers • Quench • Vertex • FilterWater • WaterLogic • And More...

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Free Shipping Over $55
100% Satisfaction & Compatibility Guarantee
Quick & Easy Installation
NSF-Certified Materials
Free Shipping Over $55
Replace Every 12 Months
Most Orders Ship Same-Day
Subscribe & Save 10%
Free Shipping Over $55
  • Set of 5 water filters. Sediment + carbon block filter, pre carbon GAC filter, Reverse Osmosis Membrane, post carbon GAC filter, alkaline mineral carbon block filter. Used for water coolers and undersink water filtration systems.
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5 Filter Reverse Osmosis (RO) Set

5 Filter Reverse Osmosis (RO) Set

$134.00 USD
$134.00 USD
Sale Sold out

Reverse Osmosis (RO) Filter Set Includes five 12” Inline Filters:

RainTree™ Sediment + Carbon Filter

RainTree™ Pre Carbon Filter

RainTree™ Reverse Osmosis (RO) Membrane

RainTree™ Post Carbon Filter

RainTree™ Alkaline Mineral 

* Filter lifespan may vary based on source water quality

* Intended for use with potable municipal water

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Pair of no-tool push fittings (one white and blue and the other is white and orange) for connecting water filters to tubing for water cooler filter replacement

NO-TOOL Fittings (Set of 11)

$22.00

Filter Set Components

Primary Filters
Raintree sediment + carbon block filter for water cooler and undersink water filtration systems

1. SEDIMENT + CARBON

  • New and improved, now with added carbon block!
  • Dual-stage filter design for better water filtration
  • Stage 1: captures particles such as sand, silt, rust, dust, dirt, and pipe residue
  • Stage 2: features a carbon block that reduces chlorine and other unwanted impurities
Pre Carbon GAC water filter. Used for water coolers and undersink water filtration systems.

2. PRE CARBON

  • Granular Activated Carbon filter uses adsorption process
  • Contaminants are attracted and adhere to the carbon material like velcro
  • Reduces chlorine, VOCs, THMs, and bad taste and odor
  • Protects and extends the life of the Ultrafilter Membrane

3. RO MEMBRANE

  • Semi-permeable membrane
  • 0.0001 micron pore size
  • Reduces TDS (total dissolved solids), salts, trace minerals, fluoride, bacteria, viruses, and microplastics

Polishing and Mineralization
Post Carbon GAC water filter. Used for water coolers and undersink water filtration systems.

4. POST CARBON

  • Premium 20x40 mesh granular activated coconut shell carbon
  • Improves taste and reduces unwated odors
  • Delivers a smooth, fresh finish
  • Completes the filtration process for optimal water quality
Alkaline Mineral Carbon block water filter. Used for water coolers and undersink water filtration systems.

5. ALKALINE MINERAL

  • Carbon block and functional ceramic ball media
  • Adds beneficial trace minerals for better-tasting water
  • Raises pH to produce mildly alkaline water
  • Improves taste and reduces odors
  • Provides a crisp, refreshing finish
  • Final conditioning and polishing stage

Optional Add-On

NO-TOOL FITTINGS

  • Patented quick-release, no tools or fingernails needed
  • Color coded to indicate direction of water flow, making filter changes fast
  • Only available at Wholesale Watercooler
  • The 5-filter RO fittings upgrade includes 11 fittings
  • They don't need to be replaced every time - you only need to buy them once
+ $22.00

Why Choose Raintree™ Filters?

Pure, clean water for your entire home

Pure water

Made with the highest quality materials for superior performance and great taste

Advanced protection

Multi-stage filtration protects your family from harmful chemicals and bacteria

Easy installation

Quick and easy filter replacements

Long-lasting filters

Filters last up to 12 months, saving you money and reducing waste

Raintree™ water filters

Compatibility Chart

Wellsys

• JCP-8020

• Venus

• W5

• W9

• W9CT

• WS 11000+

• i12

• i15

• i16

Note: Some of the 2024 and newer Wellsys water cooler models now use twist-on style filters. Wellsys coolers made before 2024 will use our RainTree™ Replacement Filters. If you are unsure about compatibility, please reach out to us. We're always happy to help.

Flowline

• 8020

• 8020W

• 8020B

• 4011

• 4011W

• 4011B

• 350

Bluline

• 8020

Global

• G3

• G4

• G5

• G6

Hyundai / Waco / Wacotec

• Romeo 1

• Romeo 2

• Romeo 3

• Juliet 1

• Juliet 2

• Juliet 3

• W2 340S

• W2 310L

• Poseidon

Jintec

• Venus

• Titan

• Hercules

International H2O

• H2O-2500

• H2O-2500P

• H2O-500

Crystal Quest

• CQE-WC-00900 Hybrid Ultrafiltration Bottleless Water Cooler

• CQE-WC-00902 Hybrid Ultrafiltration and Reverse Osmosis Bottleless Water Cooler

• CQE-WC-05900 Sharp Ultrafiltration and Reverse Osmosis Bottleless Water Cooler

• CQE-WC-05902 Sharp Ultrafiltration Bottleless Water Cooler

• CQP-WC-05901 Turbo UF and RO

• CQP-WC-05903 Turbo UF

• CQE-WC-00906 Turbo UF

*Note: If you are transitioning from the original factory Crystal Quest water filters to our Raintree™ replacement filters, you will need to add our "no-tool fittings" and 3-4 feet of extra tubing to your order for the inital conversion as the fitting to tubing connection is a different style. 

**If you have a Crystal Quest UF+RO cooler, you can use our filters (with the no-tool fittings), however, you should choose our Reverse Osmosis replacement filter set as we do not have a combination UF+RO filter set.

AquaVerve

• Pacifik PF5615

• Standard STD5615

• Oceanik XFK5615

• UNIV5615

Pure Water Coolers

PWC-1000T

PWC-1010

PWC-1500

PWC-2000

PWC-400

PWC-500

PWC-600

PWC-7000

PWC-3500

Vertex

FK-104 Vertex

PWC-1000T Vertex

PWC-1500 Vertex

PWC-1010 Vertex

PWC-3500 Vertex

PEC-7000

H2O-2200

H2O-2500

FilterWater

• FW-400

• FW-500

• FW-650

• FW-1500

• FW-2200 

• FW-2500 

• FW-FLOW 

• FW- i020 

• FW-210 under sink

If you don't see your make/model on our list and you are unsure of compatibility, please reach out to us for assistance. We're always happy to help!

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