Is there any such thing as a Reliable Millivolt Thermostat for an old wall heater?
I used to have a simple one with a mercury switch - that was not subject to corrosion or dust on the contacts.
mikie
Is there any such thing as a Reliable Millivolt Thermostat for an old wall heater?
I used to have a simple one with a mercury switch - that was not subject to corrosion or dust on the contacts.
mikie
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