We've replaced these filters probably 6 times now and I've found it to be easily done if you have fairly good hand strength to separate the top from the bottom of each filter housing. I do not know of a way to redesign the filter housing to make this an easier task but someone who is either somewhat frail, arthritic or otherwise hand strength-challenged would have a hard time undoing the canisters.
I have used Aquasana for several years and find the quality of the drinking water from the tap improved 101%! Before that I could not stand the taste from the tap and would seldom drink it.
Pros: Easy to clean, Clean taste, Long lasting filter, Durable, Easy to install
Until you have pure, clean fresh water ready and available 24/7, you don't know what you're missing. This filter system requires new filters every six months. The filters are simple to replace. The filter specs exceed my camping filters, which are first class.