What Are These Vents For Above The Doors

Back in the day most homes that were built with a central heating and air conditioning system had a ductwork design with a supply and cold air return duct in every room. Nowadays to keep building costs down many homes are built with a central cold air return on each floor that brings air back to the furnace.

When interior doors are closed it inhibits proper air circulation, so transfer grills are installed above the doors to allow a path of least resistance. In this design usually every room except for the Bathrooms 💩 and the Master Bedroom 🤔😮😆 will have these grills above the door.

When I’m performing a home inspection for you this is one of the many items that I look for; making sure every room has at least a supply duct to provide hot or cold air to the area.

BJ Poznecki
Cell: 773-403-3298

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[Kevinb]

I get the point of them but it’s terrible for acoustics. It’s like your door is still open

[trippie]

Can you put a cushion or memory foam in it? The noise that comes in and out of the room is basically like a window you can’t close.

[kippants]

BJ is super knowledgeable and can't thank him enough for sharing his knowledge with others!!!

[Yungslumpgods]

Sorry if this is a dumb question, I have no idea how these work. I have one above my door and it has a lever. Should the lever be up or down?

[Moondoggy]

These are like the olden days where they had windows that tilted above a door way.

[Gachartales]

Please tell me name of this wind please

[cathyperry]

Which direction do the louvers go on the exterior and the interior? I ask because I want to be sure the air flows properly. I took them off to paint and am not sure which direction to face them.

[katherinetaylor]

But for any activities behind those doors.... you'd hear EVERYTHING through that vent

[ginz]

Thank you for sharing! Does this transfer grille help with reducing the temperature in the room in the summer? Thanks!

[JenLit-gxvo]

How do these vents impact fire safety? I was told to sleep with bedroom doors closed in case of fire. Won't the fire and smoke just come on inside the room through the vents above the doors?

[mikekillion]

Do they help the airflow when the door is open too? The temperature in my bedroom is much different than the rest of the house and I generally know why, it's on the opposite side of the house and two floors up from the blower so the airflow is quite low. There's a return just outside the bedroom in the wall, close to the floor. I can imagine having a vent above the door would help some, particularly in the summer.

[maddgoatee]

Bedrooms doors stay shut because of pets. Which makes the rooms uncomfortably warm. Our home doesn't have these vents. Could they be added over the door. Not sure if there's a header over the passage. Plan B would be to vent the door. But was hoping to upgrade our ugly doors in the future. And a wall vent would be a permanent solution.

[rajaharoon]

If I have no back window in my room then this vent will be useful for ventilation or not? Is this enough or I should kept front window along with the door?

[TraumaLlamaRN-]

I have these however there’s wood blocks showing, is that okay?

[wcb]

I have a grey mesh looking material in my grates. Should that be there?

[kennethlong]

I got two vents one on the bottom of the wall and one on top of the wall. I think you said you keep the door closed until the air flows from the top one.

[PANTHEREPUBLIC]

If the material is all black on the inside is that bad?

[birdlynn]

Do the return suck air or is it just silent no suction?

[arielrodriguez]

When I close any door in my home you can feel the air coming out from underneath the door. What is the best approach to be able to leave the door closed when hvac is on?

[danram]

If there's a good amount of gap on the bottom door is it still necessary to have that circulation vent?