On most space heaters, you'll see an option to adjust the level of heat that the appliance provides. Most have some form of a "low," "medium" and "high" setting. Typically, what these settings ...

In the winter, experts recommend that you set your thermostat to 68 degrees Fahrenheit when you're home, and 60 to 65 degrees when you're asleep or away.

Instead, it's a decision that will be based on a number of factors ranging from how much heat and hot water ... in some cases ...

Rules of thumb don’t cut it in airtight homes. Here’s how to size, ventilate, and commission for real comfort.