How do I test proper psi for a hot water tank?

You can buy a test gauge with a garden hose fitting at HD, Lowe's or other source. Screw it onto the HW drain and slowly open the drain. Should be 45-65#. If higher or lower than that, you should adjust the PRV for the house, with water running . If too low, screw the bolt down and if too high, screw the bolt out.

You can buy a test guage with a garden hose fitting at HD, Lowes or other source. Screw it onto the HW drain and slowly open the drain. Should be 45-65#. If higher or lower than that, you should adjust the PRV for the house, with water running . If too low, screw the bolt down and if too high, screw the bolt out.

Thank You!

Great answer ma, hot psi should be the same as cold psi unless you have a backflow prevented. The same test could be done on the garden spigot on the outside of the home. Does you house have a pressure reducing valve (prv)?