It's not too early to begin thinking about the heating season. Actually, now is a good time to schedule a professional to inspect your furnace to make sure it's operating efficiently and safely. Once that first cold snap hits, they're sure to be backed up with calls.
In addition to having your furnace inspected, you should also have carbon monoxide alarms on every level of your home. CO is a colorless, odorless gas that can cause illness and even death.