Sure, the weather outside may be frightful, but so can the cost of keeping your home comfortable. If the numbers on your energy bills have stopped you cold, it's time to take action. Start by looking at your routine. Here are six common wintertime energy-wasting mistakes that could be costing you.

1. Failing to have your heating system inspected

An annual heating system tune-up is important not only to ensure performance but also to spot potential problems that could lead to a midwinter breakdown or shorten the system’s lifespan. If you haven’t done so already, contact a qualified HVAC professional to inspect and clean your heating system.

2. Neglecting your thermostat

Lowering your thermostat when you're asleep or away from home is the simplest and most cost-effective way to save on winter energy bills, but it's widely ignored. Smart thermostats make it easy. They automatically adjust temperatures to save energy and maintain comfort based on your schedule.

3. Ignoring cold drafts

If some rooms or areas feel colder than others, don't just crank up the thermostat or break out the space heater; check for gaps that may be letting cold air inside. Start with windows and exterior doors. Other common culprits include exterior plumbing, wiring or exhaust vents in your basement or attic. Seal any gaps you find with weatherstripping, caulk or expandable foam insulation.

4. Letting warm air escape up the chimney

Your chimney is an outlet for the warm air your heating system generates. If you're not using the fireplace, keep the damper closed to prevent warm air from rising up the chimney. Check the flue damper seal and make sure it’s as snug as possible. Consider installing tempered glass doors and a heat exchange system that blows warm air back inside.

5. Not letting the sunshine in

On sunny days, opening shades and curtains on south-facing windows lets in natural light and welcome heat, reducing the strain on your heating system. Closing window treatments at night not only ensures privacy but also helps keep warm air inside.

6. Overusing the space heater

Space heaters are great for providing short-term warmth in cold areas such as your basement or a workroom in the garage. However, using them long-term around your home can get really costly. If you need extra heat in certain rooms or spaces, check for and seal exterior gaps, and contact a qualified contractor to ensure your home is properly insulated.

Consider a home energy audit. An energy professional will inspect your home and provide you with a targeted list of measures to save money and improve comfort.