In the middle of winter, fireplaces are a popular topic. This week, Ernie talked about re-building his dual-sided fireplace and adding a damper and tempered-glass doors in the process. In the heating urban myth debate, Elizabeth shared her former roommate's assumption that using a gas fireplace to heat a single room would be more efficient than a central heating system (not necessarily - it depends on your utility rates).

We have several blog entries that talk about using your fireplace efficiently, and we provide some tips on our seasonal website.

How efficient is your fireplace? Is it gas or wood-burning? Do you have tempered glass doors, an efficient damper, or other devices to keep it from losing heat when you're not using it?

Each week, you have the chance to share your thoughts on a question or frequently-asked-question about energy efficiency or renewable energy for consumers. Please comment with your answers, and also feel free to respond to other comments.