Suburban water heater replacement issue

yeah dealing with PEX crimp clamps directly on fittings adds a layer of complexity. To remove them without damaging the PEX pipe, you can use a PEX crimp ring removal tool, a pair of channel-lock pliers, or a utility knife. Carefully cut the crimp ring along its length, avoiding the PEX pipe beneath. Once the crimp ring is cut, you should be able to slide it off the fitting. If access is limited, a mini hacksaw or reciprocating saw with a fine-tooth blade could be useful. you can also consult with emergency plumber. Remember to turn off the water supply before starting, and having a bucket or towels handy to catch any residual water is a good precaution.