Homeowner was having problems with water pressure. When I arrived, I found the static water pressure to be 160 PSI. When any fixture was used, the pressure dropped to 15 PSI. I also found the the thermal expansion tank had failed. I found that the temperature and pressure relief valve was constantly running due to such high pressure being allowed through the failed pressure regulator. I replaced the pressure regulator with a watts 25AUB. I replaced the whole house shutoff valve with a new 3/4” PEX ball valve. I also replaced the shutoff valve for the hose spigot due to space constraints with the area I was working in. I replaced the failed thermal expansion tank with a new expansion tank charged to 65 PSI. I mounted the new expansion tank to a bracket and ran new type M copper to the expansion tank. I pressurized the system and tested for leaks and found none. The pressure is now adequate for the homeowner. I tested the pressure after the work was completed and found it to be 60 PSI. W