Many people use firewood as a source of heat during the winter months. While it may seem like a time-saving idea to stack large amounts of wood inside the home, it's best to bring in wood on an as-needed basis. When you bring in firewood, you risk introducing mold spores into your home, which can affect your indoor air quality. For people who have asthma and other respiratory illnesses, this can be a health problem. Most people want to avoid a mold infestation in their home anyway. Instead, store firewood outside in a dry place, like the front porch, and bring it in when needed.

Here's a simple habit to get into with your garage door at home: Keep it closed. When your garage is warmer in the winter and cooler in the summer, you'll save on your overall energy costs. Since the garage is often connected to the house, cool air that blows in from outside during the winter can make its way into your home, and vice versa during the summer. So consider using the garage door to get your car inside and outside only, not as another door to and from the house.

An automatic car wash is the most water- and energy-efficient way to wash a car, and it's especially useful in the harsh winter months. When roads are treated with rock salt to deice them, the mixture of melting snow and ice with the salt can cause rust on the undercarriage of your car. After a harsh storm, visit an automatic car wash and opt for the undercarriage cleaning along with a hot wax seal. This will wash away the salty mixture and create a barrier that will protect your car from further winter damage.