Replacing floor vents is a fairly easy process. Each are usually held to the floor by two screws, so remove those. Then pull out the vent from the cavity. If you measure this cavity you will know what size you need to replace the vent taken out.
The floor HVAC vents are typically located on the floor near the walls in a room.
in the floor.
Yes vents can be in the floor instead of the wall.
on the floor on the floor
should be on floor.
the middle vents only supply air from the ac unit using a separate in dash fan. the floor and defrost vents come only from the heater
There are heater doors on the heat blower box that direct the path of the heat. Apparently the heater door to the floor vents is stuck closed.
Very poor installation
Cold air return vents are the ones on the wall
thermal vents
It is the Marine :(
No, floor vents will not help in cooling your house since they are only used when your air conditioner is on. Fans are the cheapest way to cool a home down.