During severe cold, it's best to avoid fiddling with the thermostat too much. Keep the temperature set around 70°F to prevent the furnace from overexerting itself trying to reach a higher temperature.

This can be prevented by setting the water heater to a temperature where the bacteria Legionella cannot thrive. The Occupational Safety & Health Administration (OSHA) recommends water heaters be set ...

Turns out there's a magic number for your thermostat setting in the winter, experts say. Sixty eight degrees is ideal. But if you're looking for a ballpark, anywhere around 70 degrees is a good target ...