Best Home Master Under Sink Countertop Filtration in 2026

Save space — our 3-stage system does as well or better than competitors systems despite their 5 and 6-stage filters, with fewer filters to replace

Extra long filter life — Get clean, fresh-tasting water with fewer filter changes and a membrane that lasts for years

Efficiently Use Salt: The WHESFC is a smart water softener, meaning it uses demand-initiated regeneration technology to produce soft water as your home needs it, reducing salt costs over the life of the system.

Designed, engineered and assembled in the USA. Questions Call the Whirlpool helpline

No Filter to Replace: The WHESFC Pro Series Hybrid cleans its own filter as needed — you will never have to replace the filter.

Uses up to 25% less salt and water than previous Whirlpool models by monitoring your water usage and only regenerating when necessary. Older timer-based models regenerate on a set cycle regardless of how much water you’ve used; which can result in unnecessary water and salt consumption.

Connects to plumbing up to 1-1/4″ in diameter. (Connections out of the softener are 1” male pipe threads)

Change filters in seconds: ultraease filter replacement allows you to change filters in seconds without turning off your water

Modern faucet design: system includes our designer chrome faucet for a contemporary, sleek look for your kitchen sink

NSF tested and certified: A water filtration system you can trust – materials certified to ANSI/NSF Standard 42 by the National Sanitation Foundation International for the reduction of Chlorine Taste & Odor.

Try Whilrpool's full line of filtration systems products, including whole home filters, under-sink filters, ice filters, replacement filters, and more.

NSF Tested and Certified: A water filtration system you can trust – certified by the National Sanitation Foundation International against NSF/ANSI Standard for material safety and structural integrity. For cold water use only.

Optimal Maintenance: For best filtration results, it is recommended to use Whirlpool genuine replacement filters WHKF-GD05/WHSW/WHWC/WHPL. For installation, Whirlpool WHKF-B6 housing mounting bracket provides additional support.

NSF Tested AND Certified: A whole house filter you can trust – certified by the National Sanitation Foundation International against NSF/ANSI Standard 42 for Materials Safety.

Compatible Model: Each replacement cartridge's size - 10"H X 2.5"W. This standard capacity filter fits Whirlpool WHKF-DWHV, WHKF-DWH, and many other manufacturers' drop-in housings. Also replaces Whirlpool's former WHCF-WHSW.

NSF TESTED AND CERTIFIED: A water filtration system you can trust – certified by the National Sanitation Foundation. For cold water use only.

TRY WHIRLPOOL'S FULL LINE OF FILTRATION SYSTEM PRODUCTS including whole home filters, under-sink filters, ice filters, replacement filters, and more.

Product 1: Efficiently Use Salt: The WHESFC is a smart water softener, meaning it uses demand-initiated regeneration technology to produce soft water as your home needs it, reducing salt costs over the life of the system.

Product 2: Rated at 50 micron. Whole House Spin Down Sediment Water Filter. Ideal frontier water filter in whole house water filter system, protecting your entire plumbing system from sediment, rust, dirt, sand, and large particles. NOTE: Screens with 50 or 100 microns may be clogged very soon for water with high sediment content. Contact us for screen replacement in different size.

Product 2: Flushable and Reusable. Take the considerable workload off finer filters that follow behind it; unlike traditional sediment filters, regular flushing keeps the WSP performance in control. WSP series can be used for waste water treatment by spin down the sediment.

Product 2: Durable Whole House Spin Down Sediment Water Filtration. Solid lead-free brass machine head with stainless steel mesh filter screen that usually lasts 1 - 2 years.

Product 2: Easy installation with double threads.1-inch MNPT and 3/4 inch FNPT on both ends, garden hose barb fitting on flush out valve. See-through housing provides easy visual monitoring.

Product 1: Easy Installation: This system comes with a bypass valve that will maintain optimal water pressure throughout your home and is easy to install. Installation guide included. You will need the necessary connectors and enough tubing to connect from the water softener to your existing plumbing, access to 110V electrical outlet, and drain

Product 2: Whirlpool water softener cleanser maintains your water softener’s peak efficiency and performance

Product 2: Helps remove harmful deposits from your water softeners resin bed, valve and system

Product 2: Recommended use every 4 months

NSF TESTED AND CERTIFIED: A water filtration system you can trust – certified by the National Sanitation Foundation.

TRY WHIRLPOOL'S FULL LINE OF FILTRATION SYSTEM PRODUCTS including whole home filters, under-sink filters, ice filters, replacement filters, and more.

Product 1: Save space — our 3-stage system does as well or better than competitors systems despite their 5 and 6-stage filters, with fewer filters to replace

Product 2: Connects any water filtration system (including reverse osmosis systems) to the ice maker or water dispenser of your fridge

Product 2: Delivers crystal clear ice cubes and great tasting RO water to your fridge, superior to inline fridge filters

Product 2: Kit includes everything you need for the installation - approximate 20 feet 1/4" tubing, a 1/4" x 1/4" x 1/4" "T" fitting, an inline 1/4" x 1/4" shut off valve, and a compression fitting set. Tested by independent third-party to meet NSF/ANSI Standards

Product 2: Durable and easy to install - Push-in quick connect fittings offer easy DIY installation with no tools required

Product 1: Full 1-year parts and labor . The system can be extended to 2 years when you buy 3 bottles of Whirlpool WHEWSC water softener cleanser (sold separately)

Product 2: Certified to NSF/ANSI 58, 6-Stage Alkaline Remineralization Layered Filtration - Exclusively designed to restore the natural alkalinity and mineral balance of water; this reliable and ultra-safe Reverse Osmosis (RO) water filtration system converts your water into clean, pure and healthy drinking water by removing up to 99% of over 1,000 harmful contaminants like chlorine, fluoride, lead (removes up to 98%), arsenic, asbestos, calcium, sodium and more.

Product 2: GREAT-TASTING MINERAL WATER - A standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below because the RO membrane removes not only harmful pollutants but also a few helpful minerals. The iSpring RCC7AK Reverse Osmosis water filter includes an additional 6th stage - an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives your water a more natural taste than regular 5 stage RO water filter.

Product 2: LOW MAINTENANCE - Transparent 1st stage housing for easy visual inspection. Three extra long life pre-filters to remove large contaminants and protect RO membrane. Ultra fine (RO) filter to remove contaminants down to 0. 0001 microns; fine GAC filter to provide final polishing to the purified water and (AK) filter to finally restore just the right proportion of healthy minerals and a natural alkaline balance. The end result is great-tasting bottled-water quality.

Product 2: EASY TO INSTALL & NO LEAKS - The water purifier is designed for do-it-yourself installation and all necessary parts for installation are included. Backed by clear installation manual, instructional videos, and access to life-time technical support. The entire alkaline water filter fits nicely under a kitchen sink. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock; no threading pipes needed.

Product 1: Easy Installation: This system comes with a bypass valve that will maintain optimal water pressure throughout your home and is easy to install. Installation guide included. You will need the necessary connectors and enough tubing to connect from the water softener to your existing plumbing, access to 110V electrical outlet, and drain

Product 2: Whole house water filtration system with 1" stainless steel reinforced inlet/outlet connectors

Product 2: Perfect for residential homes, helps protect appliances and pluming from sediment and scale

Product 2: Features bypass shut off valve, integrated bracket design and battery operated filter change timer

Product 2: Reduces: sediment, rust, scale, dirt, coarse sand, sand, fine sand, silt, bad taste, odor, aesthetic chlorine taste and odor (depending on filter cartridge)