And gas fireplaces are no exception. These days they are stylish and add the classic flickering flame that the whole family, or dog, wants to gather around for that picture-perfect moment. But apart from their aesthetics, what do we know about gas fireplaces? How many of us actually know how they work? Not many, we bet. And that can be off-putting for some consumers. Who wants to put an object that runs on gas in their homes without understanding...