Is it because the old twist-knob was a "4-wire" thermostat that cuts power completely while the new RLV3120A is a "2-wire" thermostat that doesn't? I'm an electrical engineer but this is my first time ...
Lexie is a former Staff Writer at Forbes Home and has over 6 years of professional experience as a writer and editor in the home improvement space. She's previously worked at sites such as HomeAdvisor ...
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