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Mend Water Heater Pressure

Water heater pressure is too high?

My water heaters pressure is building up too high and I can't find a reason why. It blew off a pipe. It isn't the thermostat, It isn't corroded, and the temperature is set low enough.. Any Ideas on what my problem might be and how I can fix it?

Alexis
April 2010
Heating, Home Heating SystemsWater Heater Pressure
it sounds like the expantion vessel needs checking or
mains water is getting past the filling loop
or heat exchanger

b
April 2010

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High Water Heater Pressure - Causes & Fixes