A: Here is the manual link to the system. The replacements are all referred to as filters and does not specify if one is a membrane. http://www.waterfiltersfast.com/assets/images/manuals/whemb40.pdf Answer provided by:  Janice (3/26/2015)

A: They try to tell you with the light flashing that they are complete, 4-6 months but I just tack the battery out and put it in again. you will know by when the flow slows down when to change Answer provided by:  Bela W Lindenfeld (12/5/2014)

A: 1 gallon Answer provided by:  sunil (8/20/2015)

A: At the very least 1 full minute. I run 2 gallons through mine, measured by 1 guart plastic tea cup. Answer provided by:  Larry (8/20/2015)

A: Whirlpool has temporarily pulled this item. As soon as they have been released we will update our site. We have no ETA at this time. Answer provided by:  Janice (10/24/2014)

A: Until it stops burping air depending on the water pressure 5 to 10 min. You will taste the difference right away these are great. Answer provided by:  Michael (5/13/2013)

A: The rated capacity for this system is 350 gallons (1325 liters) at a rated service flow of 0.74 gallons per minute if your tank is operating within the required water pressure. This system works on water pressures of 30 psi (minimum) to 100 psi (maximum). Answer provided by:  Janice (1/2/2013)

A: I have had these filters for 1.5 years and the water pressure is a lot lowers than the normal faucet. Seems pretty normal. Answer provided by:  Michael (12/30/2012)

A: I have had these filters for 1.5 years and the water pressure is a lot lowers than the normal faucet. Seems pretty normal. Answer provided by:  Michael (12/30/2012)

A: Two things. One, is this a new set up? If so, no, that is not normal. Read the minimum water pressure required. Two, if it is not s new set up, then your filters are ready for replacement. We had rust from hydrant flushing, caught by our filters, requiring us to change them a little earlier than recommended. This is under the assumption your are not using a saddle valve, which can rust open or shut, and impede water flow. Answer provided by:  Al (12/30/2012)

A: It has a low flow rate for us too. Seems ok except for my impatience. :) Answer provided by:  Chris (12/30/2012)

A: Yes in order to filter the water it must pass through very small spaces so it gets restricted a bit dropping the output pressure. However the end result is well worth the wait. You could ask a plumber about a booster pump and have him take a look at the pipes sometimes steel pipes themselves get restricted and need to be replaced. Answer provided by:  Michael (12/29/2012)

A: I have purchased and installed this filter in our pelican system and it functions fine, although the system itself has not provided a solution for our hard water deposits- no fault of this filter Answer provided by:  Uwe (7/29/2014)

A: Yes it will fit Answer provided by:  Cooper (7/28/2014)

A: Need to replace expired filters Answer provided by:  Larisa (4/11/2013)

A: Need these replacement filters and have had good business experience with WaterFiltersFAST. Answer provided by:  Delane (2/16/2013)

A: A great place to order replacement filters. Answer provided by:  Julie (1/21/2013)

A: It goes to the filtration system we have and we are happpy with the system - hard to find replacement parts. Answer provided by:  Judy (1/9/2013)

A: Good price, convenience of online ordering. Replacement parts required for home maintenance. Answer provided by:  Christopher (10/28/2012)

A: I own the filter system. Answer provided by:  Tim (10/16/2012)

A: 1 gallon Answer provided by:  sunil bhardwaj (8/20/2015)

A: Here is the manual link to the system. The replacements are all referred to as filters and does not specify if one is a membrane. http://www.waterfiltersfast.com/assets/images/manuals/whemb40.pdf Answer provided by:  Janice Seltzer (3/26/2015)

A: Makes a lot better coffee and we don't buy bottled water any more! Answer provided by:  Bela W Lindenfeld (10/31/2014)