F2WGB21B Whole House 4.5"x10" Water Filtration High Capacity Sediment and CTO Carbon Block Water Filter Replacement Cartridge Pack Set, Model: WGB21B

I’ve been using these filters for years with great results. Always fit perfectly, they do a great job of filtering with an odor free result. The flow rate/psi differential stays at ~8 to 10 psi until they need changing out. They last a long time. They never come apart and are simple to replace.

I use about 2500-3000 gallons a month for my entire house which runs thru this filtering system. I change out the filters every 6 months. According to their recommendations, I am changing them sooner than I need to. My water is crisp clear and clean. It's convenient to buy them here and they ship without much delay. I have had excellent luck with this system and these replacement cartridges.

You have a choice here. Read my extremely well written review, *OR* just look at the picture. Either one will lead you to the very same conclusion: "these things really work!". The water around the Austin, Texas area is notoriously bad, so the water softener business is thriving. The problem is that no one in our family likes the "feel" of softened water, yet we knew we badly needed something. Clearly (pun intended) we were right! I had the actual filtration system professionally installed, but I replace the filters myself. Very easy to do, priced right, and again they work great. We highly recommend this product.

Good filters, but they don't last 50,000 gallons. Ours last about 4 months give or take. And that's in a family of 2. At 5 months, water pressure will noticeably drop, and they will be god-awful filthy. 4 months is a probably decent reminder for swapping these. So... budget another 3-4 filter packs a year for general costs. But it's nice to have clean water for a change. Our county water is TERRIBLE (Cobb County, GA). Filled with silt. Really awful quality. This keeps our tankless water heater from needing semiannual flushes. Well worth the cost in the long run.

These work great! We use these for our well water at our lake house. Easy to change out. Great system.

I've been using these filters for several years now and I can tell when it's time to replace the filter because I can start to taste how bad my cities water is again. Recently the city back flushed the main lines to clear a clog or something and put a ton of sediment in the main lines. It is worth the money. I would recommend 100%

Great customer service by Iris from iSpring. I lost my filter wrench and they shipped one free.

Is as described. Replaced a new one (6 months) Next 1 yr. Seem to be doing the job

The iSpring whole house filter is extremely effective in filtering water, specifically well water in southern Alberta. Changing filters was simple and quick. Although it was helpful that the person that changed the filter was the one that installed the system. For my part, it was ordering the system and filters and communicating with Francis with iSpring. Francis provided exceptional service and gave me helpful and professional advice on more than one occasion. Much appreciated! Thank you again. The attached "after" photo shows how effective the filter is!

Excelentes filtros para mi cisterna cumplen con su funcion

Good replacement filters for our water treatment system.

Muy practico diseño, de facil instalacion y muy buena calidad de agua filtrada, el sistema lo tengo instalado a la entrada de mi tinaco de agua principal, el agua que obtengo en el sistema sale sin sabor y libre de sedimentos.

Llego a la fecha como previsto, deja el agua limpio. Sin sedimentos y casi sin olor. Mucho mejor que el color cafe y olor a estancado como viene.