Higher capacity membrane and longevity?
I'm considering a Watts RO (some may recognize me from the undersink subforum yesterday). Their standard WP5 model is 24 gpd. It's also available on Amazon with a 50 gpd membrane.
I'm curious whether a higher-capacity membrane lasts longer. I.e., I only need 24 gpd. My water consumption would remain the same with the 50 gpd membrane. Therefore, does this mean the high-cap membrane will be stressed less due to operating for shorter durations?
In other words: I know all descriptions are qualified with "based upon water quality and usage." So, I'm wondering when they say "2-5 years" for both of those membranes, is it based upon something like 20% usage (5 and 10 gallons per day) and therefore the higher capacity membrane would have half the expected usage and last considerably longer?