Call for water heater estimate. Arrived and met with Ms. Jackie. She is getting ready to sell the home and would like estimates for the water heater replacement. I inspected the water heater and found it to be. 40 gallon gas unit. There are several existing issues (which will be addressed with the new installation). They are: thermal expansion tank is waterlogged and pushing down on hot out pipes, it is also unsecured and held on only by sharkbite fittings. The exhaust vent is rusted and unsecured in some places. Shut off valve does not feel like it will function adequately. Pressure regulating valve is located behind the water heater and has a stamped date indicating it is over 40 years old. When checking the main building shut off I found an antiquated pressure regulating valve here as well. I did not take a pressure reading on the home because the water heater is 20 years old, and I am concerned that doing so will cause a leak on the old unit. Pressure regulating valves are a co