<human>:  How can I make my house more energy efficient?
<bot>: One of the best ways to make your house more energy efficient is to install insulation and weather stripping. This will help keep the air inside your house and prevent heat loss. You might also consider replacing outdated appliances with energy efficient models and replacing older lightbulbs with LED or CFL bulbs. Additionally, ensuring that your windows and doors are properly sealed can help keep unwanted cold air out and warm air in.