Owners of two-story homes know the dilemma well: The upstairs tends to be hotter and the downstairs cooler. This makes managing the thermostat challenging. Why does your home have these temperature differences, and what can...

Owners of two-story homes know the dilemma well: The upstairs tends to be hotter and the downstairs cooler. This makes managing the thermostat challenging. Why does your home have these temperature differences, and what can...