Customer had 40 tall water heater leaking in the attic. Initially check house pressure at 100 psi. Found that hose bib was run before the PRV. Checked the house pressure off of toilet stop at 50 psi. Replaced the heater with a 40 short and disposed of the old heater. Installed new heater in existing drip pan and installed a new thermal and a new shutoff. Tested all work to ensure proper function and no leaks.