A: The recommended time frame is every six months on the filters and once a year on the membrane. Answer provided by:  Janice (10/27/2015)

A: I've used these cartridges for over 10 years and never seen or smelled a thing in the water coming out during a purge. Still, the manufacturer knows what's involved in their manufacturing so I continue to purge, but not for 24 hours. Answer provided by:  JEFF D (11/24/2014)

A: Not sure what the instructions on my RO unit says as it has been several years since I installed it, but I change mine usually once a year or so. Or when the water volume slows down some which means the membrane or filters are not working efficiently. Answer provided by:  Marshall (10/27/2015)

A: Yes, the WHEERF is compatible with the Kenmore 650 Answer provided by:  Janice (7/30/2015)

A: It takes 4 or five gallons for every gallon of filtered water. Ca is in a drought, but I can't remember when the water California American water provides us in the Monterey area is not drinkable, smells bad and tastes so bad, we don't even cook with it nor give it to our cats. I feel like I ought to charge THEM for that five gallons of wasted water. The whirlpool product is NOT that difficult to install and even easier to change the filter sets. I can taste when it's time to change and get my supplies in a day or two. Because Consumers report rated it well and I've been pleased with the great tasting water, I've never tried another system. Nice to have a place to rant as well as rave.?? Answer provided by:  Lynn (6/28/2015)

A: Depending on how new your filters are, it will take between 5 & 7 gallons of tap water to make 1 gallon of filtered water. The big drawback of RO systems is the wasted water. Answer provided by:  Albert (6/27/2015)

A: No, but they have different life expectancies. Info on this web site Answer provided by:  Lynn (6/28/2015)

A: No Answer provided by:  Gerard (6/18/2015)

A: That is not a problem. As you probably know after installing filters one purges the system. Answer provided by:  Keith (3/7/2015)

A: I have never had that issue. I would look closely at the filter to see if there are any other issues. If not I would simply rinse off, then install. If there were cracks, chips, or other obvious defects I would return. I hope this helps. God Bless. Don... Answer provided by:  margaret (3/7/2015)

A: Since I believe the RO membrane removes the chlorine in the water, and since handling the filters could contaminate the system, chlorine is added to the purge to insure the system is purified. Answer provided by:  Robert (11/24/2014)

A: It clears the carbon dust from the new filter. Answer provided by:  Ben (11/23/2014)

A: It sounds as if he is referring to the filters and the membrane. The membrane is recommended to be changed every 1 -2 years where the filters are changed every 6 months. The link is provided below for the membrane and a complete set. http://www.waterfiltersfast.com/search.asp?q=wheerm&x=0&y=0 Answer provided by:  Janice (8/14/2014)

A: While this isn't on the list we arent able to confirm if it does or not. We recommend contacting Whirlpool directly @ 866-698-2538 Answer provided by:  Janice (7/31/2014)