That broom like thing stuck on the inside of your front door down at the bottom is called a door sweep. It is not there to sweep the floor as visitors arrive. Its job is to keep air from sneaking in or out under the door.
The door sweep also blocks bugs and creepy crawly things from getting in. Some door sweeps are made like a mud flap with a strip of flexible material instead of broom bristles. Older classy designs were made of thin flexible bronze metal.
Door sweeps are supposed to work with the threshold. The threshold is the mini speed bump in the floor directly under the door. A well-adjusted door sweep should touch the threshold, not the floor.
The flex in the bristles or other sweep material allows the sweep to push against the threshold for the full width of the door. There should be no gaps or open spots anywhere along the width of the door. If the door sweep is worn or damaged, the wind will blow through under the door. It does that just to run up your heating and air conditioning bills.
If your door sweep is not well adjusted, a mental health professional will not help. You need a few tools to shift it to a better position. You may need to take it off to fix it so you might as well be ready to put on a new one. They are not expensive. A new one will cost much less than a mental health professional.
If you have a screen/storm door outside of the main door, it should also have a sweep on it. The sweeps on modern aluminum storm doors usually have couple of screws that hold the bottom piece of the door where the installer set it.
You can adjust the sweep by loosening these screws and moving the bottom section of the door until the sweep makes a good seal when the door is closed. Check to make sure the door still opens and closes freely.
Take a good look at the threshold. Most modern thresholds have a bump of flexible material that helps seal under the door. The threshold is half of the team that weather seals the bottom of the door so be nice to it.
I have damaged them by dragging heavy furniture over them. If yours has been worn out or is damaged by heavy traffic, replace it with a new one.
The heating bill you save may be your own.
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