A door seal is a strip or material placed around the edges of a door to prevent air, water, dust, and noise from entering or escaping a room. It helps improve energy efficiency by keeping conditioned air inside, which can reduce heating and cooling costs. Door seals are commonly made from rubber, foam, or vinyl. These seals come in various types, including weatherstripping, thresholds, and door sweeps. Proper installation of a door seal can enhance comfort in a home or building by maintaining a stable indoor environment. Regular maintenance ensures that the seals remain effective over time.