Culligan FM-15A Faucet Mount Filter Review {Updated July 2024}

Meet the Culligan FM-15A water filter. While the majority of the water in the USA is safe to drink and use, that doesn’t mean it doesn’t contain things you don’t want. Chlorine is a chemical that is widely used for disinfecting water in public water systems [1]. While it’s safe to drink, it’s not necessarily good for you. Also, it can negatively impact the overall taste of your water. One quick and easy way to solve this is by getting yourself a faucet mount filter. Culligan is a brand that has been making consumer-grade water filters for 80 years [2].

The Culligan FM-15A is one of Culligan’s most affordable and convenient filtration systems they produce. It attaches directly to your standard kitchen sink’s faucet for easy use. The overall design of the filter is small and unassuming. The size is small enough so it won’t negatively impact the use of your kitchen sink. There is a lot to like about this filtration system.

Culligan FM-15A

Key Features Of The Culligan FM-15A Faucet Mount Filter:

  • Easy Tool-Free Installation

One of the things you’re likely interested in when buying a water filter for your kitchen faucet is the ease of installation. Unlike a lot of the other types of filtration systems, faucet filters are very easy to install. Culligan made this filter extremely easy to install. It requires no tools at all. It screws on directly to your existing faucets without the use of any tools whatsoever. This tool-free installation process makes it one of the easiest filtration systems you’ll find anywhere.

  • Effective Filtration

When buying a filtration system, you want to ensure it’s going to be delivering you effective filtration. The Culligan FM-15A is capable of filtering out a lot of what you would want including lead, chlorine taste and odor, turbidity, lindane, atrazine, and more. It does this by using a carbon block filtration method. Using this method can filter a lot of unwanted things from your water and it’s been tested and certified by the IAPMO against ANSI Standard 42 and 53.

  • Filtration Lifespan

When buying a filter, you’ll want to know how often you’ll need to replace it. Each filter can filter out approximately 200 gallons which should last up to 2 months. Therefore, you are getting a good amount of filtration efficiency with this filtration system.

  • Easy Use

The filter easily switches to filtered by pulling the valve stem on the unit. This means you will always know whether you’re getting filtered water coming out. Also, it makes it incredibly easy to put it back on unfiltered if you don’t want the water to be filtered. Once the water is shut off, the valve auto-adjusts back to being unfiltered to ensure that you aren’t wasting your filter’s lifespan.

  • Can Attach Two Different Ways

One thing that Culligan managed to do was created a faucet filter that is highly accessible. While it’s a small detail, this filter can be attached for right or left-hand orientation. This is something that anyone who is left-handed would appreciate.

Design Of The Culligan FM-15A

This particular faucet-mounted water filter is a well-designed one from a practical standpoint. The design is well thought out because it is unobtrusive. It’s not going to take up too much space which is a good thing. Also, it’s plain and won’t stick out like a sore thumb. The casing is made out of plastic which isn’t the best for durability, but it doesn’t hinder performance. Some reviews talk about the casing cracking but it seems as if that is the direct result of using hot water with the filter. This filter is designed for use with cold water only as per the description and instructions.


  • Compact

One of the things that a lot of people might be turned off about faucet filters is their tendency to get in the way. After all, your kitchen sink is an area where you are likely washing a lot of large pots, pans, and other dishes. Therefore, you don’t want to have something that is going to take up too much space or limit the room you have to put things in the sink. Culligan recognized this and came up with a design that is compact and unobtrusive. The compact nature of this filter ensures that you aren’t losing too much valuable space in your kitchen sink. This is a major benefit for anyone that was turned off from a kitchen faucet filter because they were too bulky.

  • Easy Installation

This faucet filter is extremely easy and effortless to install. It doesn’t require any tools whatsoever. This means that you don’t need to have to worry about a complex installation process or getting things wrong. Nor do you have to go underneath the sink and disconnect hoses or mess with anything on your existing setup. Rather, all you have to do is twist on the faucet filter and start enjoying clean water right from your tap. One of the great things about this unit is that it comes with several different faucet adapters. Therefore, you should be able to find the adapter that works with your kitchen sink. Some of the other products in the marketplace don’t come with adapters which forces you to have to venture out to find them yourself and to purchase separately.

  • Reduce Bad Taste and Odor

If you have a lot of chlorine in your tap water, you’ll benefit greatly from adding this filtration system to the mix. It includes a carbon block filter that is effectively capable of reducing chlorine which can get that chlorine taste and smell out of your water.

  • Culligan Brand

One of the things to like about this filtration system is the fact that it is produced by Culligan. Culligan has been a leader in the space for nearly 80 years and they have always produced some quality products. This filtration system is backed by a 2-year limited manufacturer warranty which means you can count on it lasting.

  • Good Water Pressure

One of the things that hold a lot of people back from buying a water filter like this one is the lack of water pressure. Water pressure is a big deal to many especially when it comes to their kitchen sink. After all, it’s a sink that you use for a lot of things. The water pressure from this unit can reach a maximum of 100 psi. Therefore, you are getting solid performance for the 1 stage filtration the unit offers. You certainly won’t be complaining about the water pressure with this unit.

  • Certifications

One of the things that you want to find when you are buying a filter is the proper certifications. After all, you don’t want to buy a filter and just hope it works. Instead, you want one that you know works. The best way to know outside of testing it yourself is by finding one that has been tested and certified by third-party organizations. Culligan has put this product through testing and it has been certified by IAMPO against both ANSI Standard 42 and 53. Therefore, you can count on excellent and proven performance from this filter.


  • Less Efficient Than Others

While the Culligan FM-15A offers 2 solid months of usage, that’s not the best in the marketplace. However, the other areas where the FM-15A excels and its compact form factor help to mitigate this. While it’s not the most efficient, it’s certainly good enough in this area.

  • Only Cold Water

As with other faucet filtration systems, this one is only intended for use with cold water. You don’t want to use warm nor hot water with this unit. If you use hot water, it will not only ruin the filter, but it could crack the casing. The casing is not meant to handle hot water. This is less of a con of this specific product and more of the faucet filter category itself.

  • No Filter Change Alert

Some of the faucet-mounted filters you will find in the marketplace have a built-in alert system for when you need to change the filters. Unfortunately, this unit doesn’t come with one. Instead, it has filter reminder stickers that come with the product. Therefore, you will need to remember to write down when the filter needs to be changed. This can be a hassle but it’s a relatively minor one.

Should You Buy?

The Culligan FM-15A is one of the faucet-mount water filters to beat. Culligan did a very good job of creating a small and compact water filtration system that can be easily installed onto a standard kitchen sink. The process requires no tools and it’s extremely easy to use. Because it’s so compact, you don’t have a bulky filtration system taking up too much valuable kitchen sink space. This alone makes it a worthy contender in the marketplace. If you are prioritizing a compact form factor and excellent filtration, this is one of the best you will find for the money. This faucet-mounted advanced water filter is an absolute bargain for the price.

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