Many utility companies offer free or low-cost home energy assessments. An auditor looks for air leaks, missing insulation and inefficient equipment.

Some programs also include free LED bulbs, smart power strips or rebates on upgrades like insulation and smart thermostats.

Check your utility's website for "energy audit" or "home energy assessment." Even simple fixes like sealing drafts around doors and windows can make a noticeable difference in heating and cooling costs.