Fireplace inserts are specially designed units that fit into existing fireplaces to improve efficiency and heat output. They can be powered by various fuel sources, including wood, gas, or pellets, and are often more energy-efficient than traditional open fireplaces. By enclosing the fire, inserts help to reduce heat loss and can provide a more controlled burn. These inserts come in various styles and sizes, allowing homeowners to choose one that complements their decor. Many models also feature glass doors, which enhance safety and allow for better visibility of the flames. Overall, fireplace inserts are a practical solution for enhancing home heating.