I usually keep an extra pressure switch on hand. normally I get 5ys out of them. tis one only lasted 2.
if you buy the same model.. many times you can swap inthe points contacts from a new one to the old one without dismantling the entire thing past some wires and 4 screws. at least the kind I buy .. that's how the fixed side comes out. the moveable side is even easier.. they slide out..
having a spare one means the difference in no water on a sunday christmas morning, or having water.. :) ( btdt! )