The key is to use anything not just efficiently but sparingly. The heat may not be on at night, you can use thicker covers. But the cost of wood isn't bad. The

The key is to use anything not just efficiently but sparingly. The heat may not be on at night, you can use thicker covers. But the cost of wood isn't bad. The worst winter bills appear to arise from heating oil from what I've heard anecdotally, which is common in old houses in New England.