This small filter housing looks to be the answer to sediment and scale clogging the washer cold water line hose screen. The purge tube was place in the same drainpipe as the washer drain hose. It worked out very well and seems to be the "fix" for my particular problem. Time will tell how well it will work out. The only drawback that I found was there was no screw included to fasten the bracket to the wall that holds the filter housing. Hopefully, you have jar of screws in your garage. :-)