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AC-30 Good Water Machine® Under Sink Water Filtration System

Get delicious water on tap with the AC-30 Good Water Machine® Under Sink Water Filtration System. With powerful four-stage filtration and an optional water quality monitor in the faucet, this reverse osmosis water filter system provides unbeatable value and an unbelievable hydration experience.

Ready for a drinking water upgrade? Your local Culligan® water experts can help determine the right solution for your municipal or well water. Schedule your free, in-home water test or phone consultation to get started.

SCHEDULE FREE WATER CONSULTATION

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Get Life-Enhancing Water Filtration on Tap

Effortless Sustainability

Do your part to keep plastic waste out of landfills when eliminating single-use bottles of water.

Affordable Quality

Get great-tasting filtered water for just pennies a glass, directly from your kitchen sink.

Hydration on Demand

Instantly refill your cup and enjoy refreshing hydration all day long with cleaner, filtered water on demand.

Flexible to Fit Your Needs

Seamlessly integrate this under-sink reverse osmosis system into your home by choosing a tank size that best fits your space.

Effortless Sustainability

Do your part to keep plastic waste out of landfills when eliminating single-use bottles of water.

Affordable Quality

Get great-tasting filtered water for just pennies a glass, directly from your kitchen sink.

Hydration on Demand

Instantly refill your cup and enjoy refreshing hydration all day long with cleaner, filtered water on demand.

Flexible to Fit Your Needs

Seamlessly integrate this under-sink reverse osmosis system into your home by choosing a tank size that best fits your space.

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Certified Contaminant Reduction

With a four-stage filtration process, this reverse osmosis water filter system can reduce sediment and tiny particles that can make water cloudy while addressing elements like chlorine that cause unpleasant tastes and odors.

View All Targeted Contaminants

  • Barium
  • Cadmium
  • Selenium
  • Radium 226/228
  • Hexavalent Chromium
  • Total Dissolved Solids
  • Trivalent Chromium
  • Copper
  • Lead

Elevate Your Water Experience

The AC-30 Good Water Machine was built to fit your home’s needs. You can enhance your system with these additional options:

  • Designer Faucet

  • Tank Size

  • Good Water Sentry™ Monitor

  • culligan wireless water filter

    ClearLink PRO™

100% Satisfaction Guarantee

If you are dissatisfied with your Culligan product for any reason within 30 days of your purchase, Culligan will remove the product and refund the purchase price.

Third-Party Certified

The Culligan Good Water Machine1 has been tested and certified by WQA to NSF/ANSI 372, and CSA B483.1, and NSF/ANSI Standard 58 for the effective reduction of TDS, Barium, Cadmium, Hexavalent and Trivalent Chromium, Lead, Radium 226/228, Copper and Selenium as verified and substantiated by test data.​ Learn more about product certifications here.

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Ready To Take the Next Step?

Schedule a free, in-home consultation and water test to get one step closer to the enhanced hydration your family deserves. With options to buy, finance or rent, your local Culligan water experts will make recommendations based on your home, water usage, test results and any other concerns.

Schedule Free Water Consultation

Our Environmental Impact

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40 Billion+ Bottles Saved

Culligan water filtration solutions benefit the environment by reducing single-use plastic bottle waste and saving billions of bottles each year.

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Earth-Conscious Innovation

We prioritize sustainability in designing and developing new products.

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Global Water Leadership

Culligan has joined the CEO Water Mandate and the Water Resilience Coalition to lead the way in positive, global water stewardship.


Specifications

Warranty

Culligan products are reliable and long-lasting, with industry-leading warranties. The AC-30 Good Water Machine has a limited lifetime warranty, excluding the replaceable filter cartridge and RO membrane. The RO membrane and filters have a one-year warranty

To access customer support, call your local Culligan water expert or​ fill out this Maintenance & Support form​.

Download Owner’s Guide

Please select chart from the dropdown below:

Model

AC-30 Good Water Machine® Under Sink Water Filtration System

Diameter x Height

2-Gallon Tank / 9 in x 14 in
3-Gallon Tank / 11 in x 14 in
9-Gallon Tank / 15.5 in x 24 in

Pressure

40 - 120 psi

Water Temperature

33° - 100° F

Daily Production Rate

14.5 (54.88L)

Recovery Rate

30.8%


Installation & Maintenance


Questions & Answers

What can I expect when installing the AC-30 reverse osmosis water filter system?

Can I purchase an under-sink water filtration system if I am renting or leasing?​

What does an AC-30 Good Water Machine under-sink reverse osmosis system filter out?

Is a Culligan under-sink reverse osmosis water filter system worth the cost?​


Ratings & Reviews

Glass of filtered water
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It is a better alternative to buying bottled water.

Good to know that a Culligan technician is available at any time for filter service when needed.

— Darwin R, NY

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We have had it for years and wouldn’t be without it.

We would recommend Culligan to friends, family and neighbors

— Alexa A, ON

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We feel our water is much healthier to drink & cook with;

especially after viewing the filters that were removed last month!!

— Thomas & Michelle P, TN

big quote icon
big quote icon

It is a better alternative to buying bottled water.

Good to know that a Culligan technician is available at any time for filter service when needed.

— Darwin R, NY

big quote icon
big quote icon

We have had it for years and wouldn’t be without it.

We would recommend Culligan to friends, family and neighbors

— Alexa A, ON

big quote icon
big quote icon

We feel our water is much healthier to drink & cook with;

especially after viewing the filters that were removed last month!!

— Thomas & Michelle P, TN

big quote icon
big quote icon

It is a better alternative to buying bottled water.

Good to know that a Culligan technician is available at any time for filter service when needed.

— Darwin R, NY

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Let’s Get Started

Start enjoying the benefits of trustworthy water in your home with help from your local Culligan water experts.

Schedule Free Water Consultation

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1 Certifications include Culligan Good Water Machine Model AC-30, AC-30M, AC-30L, AC-30 Plus, AC-30M Plus and AC-30L Plus Drinking Water Systems.

2 Contaminants may not be present in your water.