trlrboy..as you can see many of us use
www.rvwaterfilterstore.com It is all in the filter. We learned so much about filters at the RVwater filter seminars. There are filters that do not restrict flow, You need to pick the proper filter for your particular needs. The store will help ypu on this. The dual canister system cleans up our Florida water. You can install them permanent or not... My guess is they will freeze if iy get cold enough. Filters are changed on a regular basis. Call these folks and ask those questions.