You actually "need" only one cold air return for a forced hot air/AC system to function; however, one cold air return per level or floor improves the efficiency of the sytem.
Do not place a return air supply in your bathroom; and, unless your heating your closet you do not need one in there as well.
YES! If you do not have a cold air return on your furnace, you will have much higher heating bills as you will not be circulating the cold air from your home back to the furmace to be heated again.
You will need to consult an air conditioning contractor.
We can laser cut our grilles any size that you need.
Yes, a room can be a bedroom even if it doesn't have a closet.
For a 3 bedroom apartment, you will need approximately 20 medium sized boxes. These boxes will fit all your belongings that are in the bedroom.
no
Privacy
They are subsidized by the income of each family, and these apartments do have three bedrooms.
You do not need cold air returns in every room. Normally your warm air registers are close to your outside walls, your cold air returns which are much larger are placed in the center of your house . There may be one or more cold air return depending on the size and layout of your home.
Blackout curtains are great for a bedroom where you need to block out lights or need complete darkness for restful sleep.
Yes you do need a return label