Culligan P5-4PK Standard P5 Whole House Premium Water Filter, 8,000 Gallons, Value 4-Pack, White, (Pack of 4), 4 Count

I recommend that no one buy this filter, in fact anything from Culligan. The quality of this product has changed in recent years such that it should be banned from the market. The problem is that the polymer endcaps fail in what is called punching shear. I have used this make and model of filter for 10 years without a single problem until this past year. I purchased a few years supply of filters at once (as I normally do) in 2010 and noticed the endcaps were of a softer material than in the past, but I didnt think much of this since these endcaps also serve as the gaskets. However, upon removal of this filter after using it for a few months (my typical use) I discovered the filter medium and endcaps had collapsed (not disintegrated) like an accordion, while the center core remained straight and at its original length. Closer inspection revealed the endcap had failed in a ring around the point of contact with the filter housing. This is the location where a separate gasket would be on top of the filter. Unfortunately, this did not turn out to be a one-time occurrence. The exact same failure has happened with three subsequent filters, even though I cut the use period in half. Clearly, this whole batch of filters is defective. I have been in contact with the manufacturer (Culligan) over the past few months, and after some limited success at getting them to respond (which was a struggle I might add), they have eventually stopped replying to my emails. This is very poor for public relations. At first, I got several excuses as to why this was not their problem, the most interesting being their claim that the filters I bought were not made by Culligan because they were not purchased directly from Culligan. I informed them that I purchased them from Amazon.com, but they still maintained this argument. I scanned the label on the filter, which clearly shows their logo and contact information (which I had used to contact them) and they became even less responsive. Then I placed the next logical step in the investigation for them to answer, and that is when they ceased to respond altogether. This statement was that if they claim they have no material defects, and since they feel the filter is a counterfeit knock off, then why havent they pursued legal action against the supplier to Amazon? I must conclude that they indeed discovered a material defect with their product and dont wish to continue the discussion for fear of later litigation. I have since researched and found alternate brands of filters (I use both a sediment filter and carbon filter in my system) and will avoid ever using Culligan products again. I will also recommend to anyone that I can to avoid this manufacturer. That is what has compelled me to write this review.

Worked as it should no issues much clearer water

For the last 10 years, these filters definitely do the job they are supposed to do, especially the iron in my well water. Do NOT be stingy! Change your filters every two months as recommended and enjoy clear, clean water. Hey Culligan Man! ;-)

I installed this as part of a set which I assembled in an attempt to prevent the buildup of sediment at my washing machine. I am on city water, but it is VERY hard water and I found that I was cleaning out the strainer about once every few weeks. Since installing these items, I have yet to have any issues! The following has been installed for roughly 6 months: Culligan HF-150A 3/4-Inch Whole House Sediment Water Filter, Culligan S1A Level 2 20 Micron Sediment Replacement Cartridge 2 Pack, Culligan SW-2 3/4-Inch Housing Spanner Wrench, Culligan UB-1 Mounting Bracket with Screws. I recommend purchasing all these items for an application such as mine.

We have a muddy well. These get the dirt out better than 20 micron string-wound filters, for some reason. They say not to use them on water that could potentially have bacterial contamination (some bacteria can eat the cellulose), but we havent had any problems in the several years since we switched. If you are using string-wound, give them a try and judge for yourself.

The S1A is a good filter, but be careful when ordering. If you select the 4-pk, you will be ordering a different filter due to a system glitch and may not notice - based on first hand experience.

For the price and next day this house filter rocks.

Always buy the best filter. You wash and cook and drink that water. Why wouldnt you buy the best. Tried the bargain filters and dealt with damaged in shipping, carbon particles that never cleared up and customer service that sucked.

Great filters for hard water including grit; cheaper here online than in store anywhere in town as of the date of this order!

Product is as described