The door closer is a mechanical device that is typically mounted at the top of a door and controls the door’s closing speed and force. It affects the door by providing controlled closing to ensure that the door closes securely and operates smoothly. It also helps in preventing the door from slamming shut, reducing noise and potential damage. Additionally, door closers can contribute to the overall safety and security of a building by ensuring that doors close properly and latch securely.

Door closers also have an impact on the accessibility and ease of use for individuals entering and exiting a building. A properly adjusted door closer can make it easier for people to open the door, as it counteracts the weight of the door, reducing the amount of physical effort required to open it. This can be particularly important for individuals with mobility issues or disabilities, as it contributes to creating a more inclusive and accommodating environment.