Culligan US-EZ-1 EZ-Change Undersink Drinking Water Filtration System Review



Culligan US-EZ-1 EZ-Change is a modern water filter system that will provide you with up-to-the-minute filtration. This filtration system is inexpensive and each and every feature incorporated in it is reliable. The system is NSF certified; hence you should engage it without second thoughts.

The system has the ability of purifying up to three thousand gallons of tap water; therefore, it is reliable in providing continuous supply of clean, safe drinking water. The system reduces chlorine taste and odor as well as class III particulate. This is the only system that will provide you with great difference in taste, as far as drinking water is concerned.

Important Features and Specs

Culligan US-EZ-1 EZ-Change is a high performing under sink water filtration system with a capacity of 3,000 gallons. The system is engineered to provide you with cleaner, fresher, healthier supply of water from your own water faucet. The system is incorporated with a manageable twist-on as well as twist-off mechanism for simple installation and changing.

The filter is powerful enough to protect you against bad odor, tastes, along with detrimental particulates that can potentially penetrate your water. The 3,000 gallon capacity provides you with more than enough service. The EZ-Change filters provide you with mess-free replacement.

The system’s filter fits conveniently with any given sink water system. This ensures that your family is always provided with cleaner, fresher drinking water. The filter system is engineered for convenience, and it can be installed as well as replaced easily. The unit design is safe and long lasting, since it is backed up by high-tech filtration technology. Installation of the system is quite easy.

Basically, it should take you approximately an hour or less, as long as you have all the tools in place. The system design also allows you to make modifications as per your preference. For instance, you can add a small wood block piece of 2 x 4 inches, in order to maintain space between the dry wall and the filter.

Culligan US-EZ-1 EZ-Change weighs 2.4 pounds and it measures 3.8 by 8.2 by 12.2 inches. The weight and dimensions make it compact; thus it fits comfortable when installing. The system minimum operating pressure is 30 psi and the maximum operating pressure is 100 psi.

On the other hand, its minimum operating temperature is 40°F/ 4.4°C while the maximum operating temperature is 100°F/ 37.7°C. The system rated service flow is 0.5 gpm/ 1.9 lpm. Its filter capacity at the first level is 3,000 gallons/ 11,356 L, and at the third and forth levels the filter capacity is 500 gallons/ 1,893 L. The system turbidity is 5 NTU max.

Included parts are: cartridge change reminder sticker, water supply adapter, filter cartridge, ¼ inch plastic tubing, and mounting screws, filter head with in-built bracket, and lead free faucet and fittings.


  • The system gets rid of bad tastes as well as odors. The fresh, clean water supply will keep your family hydrated and healthy. The filter eliminates class-III particulates and chlorine odor and its taste that usually exist in tap water.
  • The system filters provide mess-free replacement. The filter normally fits easily and conveniently with any kitchen sink tap.
  • The system is engineered for convenience; you can easily install the portable filter, and you can replace it in less minutes with easy twist on – twist off technique. In addition, the quick connecting fittings make certain the filter is intact until you change it.
  • The system is highly useful; it has the ability of purifying up to 3,000 gallons of tap water; this is more than enough flow to keep your family healthy.


  • If you do not follow the installation instructions correctly, the system may end up leaking after a few rounds of use.

Who Should Buy

Culligan US-EZ-1 EZ-Change is a remarkable water filter system that has the ability of purifying up to 3,000 gallons of water. This is a very ingenious filter system for a family that is in need of plenty of clean, fresh water. You will be enthralled with each and every feature of this water filter system. This is the appropriate filtration system if you are after state-of-the-art water filtration. You should buy this system if you are after a water filter system design that is easy to install. The kit has everything you need for you to get it up and running.


Culligan US-EZ-1 EZ-Change is everything that you need as far as water filtration is concerned. This system is much better than any other filter system in the market.Unlike other filters, this system has a conveniently long life. You should know that this particular model from Culligan lasts much longer, and the taste of the water will always be amazing.

This is the most ideal alternative to buying bottled water. The system install is simple; therefore, you should consider spending your money on this model, and stop searching for other models any longer.