Add Yahoo as a preferred source to see more of our stories on Google. Smart thermostats cost an average of $235, with an average range of costs between $105 and $365. The best smart thermostats ...

Jeff Somers is a freelancer who has been writing about writing, books, personal finance, and home maintenance since 2012. When not writing, Jeff spends his free time fixing up his old house. He has ...

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 ...