Greetings: I have a Residential boiler Weil-McCain that has a combo Water pressure and temp guage on the side. With this seasons start-up there is heavy condensation - water droplets on the inside of the glass covering the guage.
This is the first time I've seen this. There is no water leaking from the guage and there is no accumulation of water inside the guage but the droplets are heavy and even with the boiler at full temp the water does not evaporate.
Is this a problem and does the guage need to be replaced?