Something else to be aware of, at least on mine..... if you take the water filter housing off while the hot water tank is full ALL that water in the hot water tank empties out through the top of the filter housing. Ask me how I know.......
Fortunately as I found this out the hard way, the cabinet where the filter housing is located is a rotomolded type with a drain plug in the bottom. It all drained through the drain plug and all is good now. But, in the future I will either drain the hot water heater first or flip the water heater bypass valves closed while I switch out the filter.
2015 Forester 2301 - Chevy
Skip & Deb - Denmark, ME & Delray Beach, FL