Water pressure at 20psi on Utica boiler

[Fred Mertz]

Water dripping for pressure relief . Pressure on gauge 20 t0 25 PSI. Should be around 12 PSI. It's 10 degrees here in NW Indiana today.

 

[GReynolds929]

First thing to check is make sure the expansion tank is properly filled with air and has not failed. It is possible that the relief has failed but I would check expansion tank first. The hotter the water is the more pressure will be in the system.