APEC WATER

APEC Ultra High Capacity Under Sink Water Filtration System - Premium Quality US Made Filter CS-2500

1066+ bought in the past month

$61.38$89.95

About this item

  • Supreme quality – designed and assembled in USA with US made filter, highest trustful filtration capacity of similar products.
  • Removing lead, chlorine, heavy metals, taste, odor and chemicals while leaving various minerals, like calcium, potassium, and magnesium.
  • Trouble-free installation - comes with standard 3/8" hoses that connect directly to the existing cold water valve and faucet stem, requiring no holes to drill. Quick twist connection design for easy filter replacement.
  • Provide clean and purified water from your existing kitchen faucet therefore do not need a separate faucet or inlet valve. Good for cooking, washing fruits & veggies and cleaning dishes without watermarks.
  • High flow low restriction design to support maximum 1.67 GPM (6.321 LPM) flow rate. Life time tech. support by certified WQA water specialist based in CA.
$61.38
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Product details

MaterialPlastic
Product Dimensions3.5"D x 3.5"W x 15"H
Item Weight3.24 Pounds
External Testing CertificationWQA
Product BenefitsRemoves lead, chlorine, heavy metals, taste, odor, and chemicals while maintaining a high flow rate and offering easy installation and replacement. See more

Technical specifications

materialPlastic
product_dimensions3.5"D x 3.5"W x 15"H
item_weight3.24 pounds
external_testing_certificationWQA
product_benefitsRemoves lead, chlorine, heavy metals, taste, odor, and chemicals while maintaining a high flow rate and offering easy installation and replacement.
brandAPEC WATER
upc854961005808
global_trade_identification_number00854961005808
unit_count1.0 Count
number_of_items1
manufacturerAPEC Water Systems
item_model_numberCS-2500
is_discontinued_by_manufacturerNo
date_first_availableMay 7, 2015
best_sellers_rank#17,862 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #417 in Under-Sink & Countertop Filtration

Customer reviews

4.61,060 ratings

Customers say

Customers find the water filter easy to install, taking less than 20 minutes, and appreciate its effectiveness in removing chlorine, sediment, and bacteria.

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Better Taste? Removing LimeScale? Installation details?

Jan M.β€”April 1, 2025βœ“ Verified purchase

Final Result is 6 Stars for Good Tasting Water EDIT on TASTE After testing this filter installed on the existing kitchen faucet for two weeks... he taste dramatically improved over the "tap water" with has excessive levels of chlorine, chloramine, and other ingredients added by city. Then I added a new separate single line cold water faucet just for this Apec filter. Dramatically improved the taste and scale reduction. Likely down to having all new lines and new faucet and aerator. Be aware that this Apec does not remove the dissolved minerals so it will not affect the TDS readings . However in my case the existing minerals are still there and water tastes good. The hard water aspect of excess Calcium and Magnesium is "conditioned" by Apec filter to reduce scaling but not removed. If the "scale reduction conditioning" from the CS-2500P only lasts for the predicted life of 1000 gallons, the better taste should still be there for 5000 gallons by removing chlorine, I'll know for sure in 6 to 12 months. First Review after Installation + Installed to the cold water line on existing kitchen faucet. 10 minutes. Used teflon tape. + Opened the cold water faucet. No leaks. Let it run for 10 minutes to get air out of the filter and lines. Afterwards, slightly cloudy water, but cleared up in a glass less than a minute. It's just micro air bubbles. 2 days no cloudy, no bubbles. + Taste Test: Apec Filter VS Original City water. Taste like RO water, with a hint of mineral taste. No more chlorine taste. No more aftertaste. + Scale Inhibitor Works: see photos. Heated water in Microwave 3 minutes in two Completely Clear glass containers. Left Photo us original city water in 1 cup. On Right is Apec filtered water in large container + Hard Water Limescale accumulation occurs with heated water. The Apec 2000P is rated for 1000 gallons of scale inhibiting. 5000 gallons for removing Chlorine, Odor, Various Chemicals. + Better Tasting Water - What matters most to me, and it passes my test for my water supply. Secondarily it also works for getting rid of LimeScale inside my electric kettle, pots on stove, and microwave containers. How long the filter actually lasts time will tell. I did not test with a TDS meter. This filter will not remove calcium, magnesium or other minerals which are dissolved solids in my city water supply. With this filter removing he excessive chlorine, flouride, chloramine, it tastes 10 times better, with a slight mineral taste. For me taste is great and better buy than the Reverse Osmosis water I was buying in bulk for 35 cents a gallon which has TDS rating of 1 Initial Review before Installation Purchased (CS-2500P) but not installed yet, but will return to update this review; I do a thorough job researching all products I consider. Two items seem to flummox most buyers looking for a better water supply. Better Taste: The bad taste from tap water in most city water supplies is primarily from high levels of Chlorine and Chloramine, any filter with Activated Carbon removes most of it. Bad taste can also be from undissolved solids including algae/bacteria/organic solids, unlikely to see this is municipal water supplies. Activates silver components in some Filters can remove most of that if present. A Brita pitcher covers all this pretty well for better taste Hard Water: 90% of US water supplies contain dissolved minerals you cannot see. TDS meters show Total Dissolved Solids. "Hard Water" solids are primarily a higher % of Calcium and Magnesium creating Scale accumulation, aka LimeScale, showing up in plumbing pipes, fixtures, dishes, glasses, pots, and coffee makers, water heaters. Excessively high Calcium and Magnesium affects Taste factor for most people. Excessive levels shorten life of appliances. Water Softeners: These actually remove solids (TDS) including Calcium and Magnesium by using Ion Exchange flushing water through resin materials. Benefits for excessively hard water supply... no scaling, better taste. Negatives are high cost and large amounts of Salt used to back-flush the Resin particles to remove the minerals. All this salt water goes down the drain. Reverse Osmosis (RO): These also soften water by removing solids and removing sediment/bacteria/algae/etc with pre-filters. Water tastes like plain water with no mineral content. Undersink systems have various Pros and Cons. Water Conditioning for Hard Water: This concerns the (CS-2500P). And conditionin Filter contain a layer of polysulfate crystals which breaks apart the larger solids into micro-crystals still dissolved in the water. The claim is better taste and less scaling. This do not remove any solids, only changes the size. Your satisfaction will vary depending on the amount of Calcium/Magnesium in your water supply The Apec (CS-2500P) filter should: + Remove 97% of chlorine with its bad taste + Remove 95% of organic material including bacteria/algae IF that is in your water supply. + Condition the water with plyphospates or polysulfate. Which will inhibit/reduce scaling and potentially give better taste. NOTE: your Satisfaction from any filtration system depends on the composition and quality of your Water Supply Read more

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quality

Steven Valentineβ€”December 11, 2025βœ“ Verified purchase

great filter this is our second time buying it. the installation was fairly easy. Water taste is great and it lasts for approximately 6 months depending of usage. We installed ours under our kitchen sick there for it gets used fairly often. Read more

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Water tastes like nothing, which is what I wanted

Garrett M. Datzβ€”February 3, 2019βœ“ Verified purchase

Ok, so I read the reviews on this before going with it, but it fit the bill for what I wanted: An inline filter for the cold on my faucet. If you are considering this you want this unit because 1> You either can't or don't want to put in a separate filter faucet 2> Are tired of standing at your fridge for filtered water 3> Don't need whole house filtration. This is a 4 month review and I just replaced my first filter. First things, install, if you have basic plumbing skills you can easily install this. Simple, didn't need to get anything other than a couple of wrenches. Second, water quality: Perfect. Tastes of nothing. Third, water flow: It's slightly lower than the hot side, but I'm talking slightly. At 4 months it was still fine. Fourth filter life: It went at about 3.5 months where I could start noticing a taste, that was a litlte disappointing. Until I really started thinking about our water usage in the sink, and yeah we cook and clean daily and probably use, no joke, 2 gallons a day in straight drinking water. Which doesn't include the rinse and run that you do for temp and things so easily double that. Putting this on a cold water line for a kitchen sink is going to run it off quick. Wife and I did a blind taste test on the filter (science!) change and we both agreed (in secret recorded answers) that the filter had gone past life. Honestly, consider the coffee, iced tea, water, cooking, etc, everything that we do this is a bargain .. and no more standing at the fridge waiting forever to fill things up. Read more

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Reliable Performance for Home and Commercial Use

LNβ€”February 21, 2026βœ“ Verified purchase

I purchased the APEC Ultra High Capacity under-sink filtration system specifically for a commercial ice machine, but it is equally well-suited for residential use. Installation was completed by a plumber, though it appears manageable for someone with proper tools and plumbing experience. The results have been excellent. The ice cubes are consistently clear and clean, indicating effective filtration. The system would be a strong choice not only for commercial ice machines, but also for home kitchens, refrigerators with ice makers, and general under-sink drinking water needs. Maintenance seems straightforward, with filter replacement needed roughly every six months depending on usage. Considering the performance and price point, this system delivers strong value for both commercial and home applications. Read more

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Good flavor, removed sediment, easy to install, good flow rate.

B-Willyβ€”January 22, 2020βœ“ Verified purchase

We have a small sink in our wet bar that we previously used primarily for making coffee and cleaning coffee related tools. I started to notice that sediment was floating around in the carafe when I was making coffee. Our filtered water dispenser in our refrigerator is also loud and slow (which is a disappointment since it is a GE Monogram built-in product). Finally, it dawned on us to get an under-sink filter and use the wet bar to quickly fill glasses of water or water bottles with clean water as well as to have filtered water for coffee. This filter immediately removed the sediment from the water, which is great Although I am sure the sediment was harmless, but its nice to see perfectly clear water. Flavor of the water is also very good and clean. Indistinguishable from bottled IMO. Flow rate appears undisturbed by installation of the filer, which was very easy if you have BASIC plumbing skills and can use a wrench. I connected the filter to the cold side under the sink, and then use the hot side to rinse and clean to avoid running the filter needlessly, thus preserving its life before needing to replace. Wish we had got this sooner! Read more

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