Message to Our Customers


Model # IL-20K

Internet # 100678548

Store SKU # 788033

20,000 Gal. In-Line Water Filter Kit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$29.99 / each

  • Reduces scale build-up in appliances and up to 99% of lead
  • Carbon-spun fiber filtration system
  • Easy to install for both contractors and homeowners


Model # IL-20K

Internet # 100678548

Store SKU # 788033

For better tasting water, use the Watts 20,000-Gal. In-Line Water Filter Kit, designed to reduce chlorine and odors from your water and improve its taste. Use it in refrigerators, ice makers, under sink filters and beverage dispensers. It is also formulated to reduce some heavy metals and scale build-up in appliances. It installs easily for either the contractor or homeowner.

California residents: see  Proposition 65 information

  • Constructed of plastic
  • Reduces up to 99% of chlorine and odors for better tasting drinking water
  • Designed to last for as long as 5 years so you don't have to fuss with more frequent filter replacement
  • Recommended uses are: refrigerators, ice makers, beverage dispensers and under sink filters
  • NSF-certified
  • Includes 1 filter

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Accessory Type 
Filter Replacement 
Brand/Model Compatibility 
Filtration method 
Carbon Spun Fiber 
Product Weight (lb.) 
2.17 lb 
Twist and lock design 
Water filter system type 
Under sink 
Warranty / Certifications
Manufacturer Warranty 
Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. 


Rated 4.2 out of 5 by 53 reviewers.
Rated 4.0 out of 5.0 by workhorse of a filter This is a good, solid, workhorse of a filter. I have these installed on two commercial grade ice machines used in residential settings. I recently had to replace the 1st one installed in late 2010 after it clogged. So I got 70-80% of the estimated lifetime. Guess it'd be nice if there was an indicator to show how much filtering capability is available... Also, it'd be good if it filtered smaller particles. There is sediment and rust at one of the locations that obviously makes it through the filter and shows up in the machine. June 3, 2014
Rated 2.0 out of 5.0 by Worked while it lasted We bought our house in May and we pitched filter pitcher in the move. Installed a drinking water faucet in place of the sprayer nozzle and added this 5 year filter for 30 bucks over the $20 - 3 month version. By late November the flow was intermittently slow. We have great water but our municipality adds just enough chlorine to affect the taste so the filter isn't working hard by any means. Flow was bad enough to make me pull it, and I found the feed line plugged solid. At first I thought the sediment was from the lines in our 40 yr old house, but it was the interior of the filter disintegrating. I don't think I'll be installing another one. December 23, 2014
Rated 5.0 out of 5.0 by It sure filters... Simple install. Remember to run about five gallons of water through the filter before you bring it online. It does the job for which it was intended. June 16, 2015
Rated 5.0 out of 5.0 by In-line water Filter for fridge ice maker This filter is rated to last 5 years. Not sure if the couplings and connectors to the filter will last that long. If they last that will mean that I don't have to change the filter annually. October 21, 2014
Rated 5.0 out of 5.0 by simple and well constructed I've purchased this exact filter type for many years, one for a sink tap and one for refrigerator ice maker. I replace them every 4/5 years. It seems to improve taste and clarity. Obviously a single stage filter like this cannot compare with multistage or osmosis systems, but for a simple long lasting in-line application, this works well. Much cheaper and more effective than the typical built-in refrigerator filter. Comes with assorted connections and fittings for compression or threaded lines. May 6, 2015
Rated 5.0 out of 5.0 by Great tasting water and ice for the price! Great price when you buy the kit that includes the filter, saddle valve, and both hoses. Very easy install too. I just hope it last the five years as promised. I recommend this filter to any household. January 19, 2013
Rated 5.0 out of 5.0 by Great Purchase This product is great instead of having to pay for the expensive filters within refrigerators, you can put this in an bipass the other one, saving a lot of money. April 14, 2015
Rated 1.0 out of 5.0 by Filter Leaks Had the product installed and it lasted three months before it started leaking. No visible cracks, just leaking around the where the water lines screw into the filter - on both ends. No reason to leak - just an expensive piece of junk. Would not recommend. June 13, 2015
  • 2015-07-01T13:41:17.780-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_53, tr_53
  • loc_en_US, sid_100678548, prod, sort_default
2 3 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.