These vents are pipes that drop from the attic down into the closet.
Furnace closet door code.
The afternoon inspection of new construction under construction had them in an upstairs hall.
Codes for a water heater in the closet.
Since modern building codes allow combustion air to be provided by the attic vents can be installed in the closet ceiling.
Ventilating a closet is generally easy to do.
My main concern was if there is a general code restriction to having the furnace in a storage closet off the bedroom.
There is no general code restriction to having the furnace in a storage closet off of the bedroom.
Even if the vents are opened up the door also still needs to be sealed as far as i can tell.
In older homes oxygen or air for combustion is often provided by vents in the closet door see bottom of door in above photo.
Using double doors provides enough space to replace the furnace and water heater.
How to build a furnace enclosure.
A furnace can be installed various places in a house in a basement an attic a garage a ground floor utility room or outside the walls.
Furnaces in basements.
Thank you for the replies.
Furnaces have their own supply and exhaust vents that need to be installed along with the unit.
Any help would be appreciated.
Depending on building codes in your area you will need to install either a double pipe system or a single pipe with a double inner layer.
3 measure and cut pressure treated 2 by 4 boards into sill plates with a circular saw.