We purchased a house about 10 years ago and since have found several significant problems. It was inspected as part of the purchase, and none of these issues were identified. One that I just noticed recently is that several rooms do not have return air vent ducts to the furnace. Some have registers that are not connected to the furnace and some do not have registers at all.
I have heard there is a way to run small (3”) hoses through the walls to correct this problem. Do you have any additional information on this topic? Thanks.
I have what looks like a stairwell wall vent that is not connected to any air/heat tubing but is open to the space where the Air/heating system is located in the garage behind the wall. It looks like it was cut out of the wall and covered with a vent cover. As a result the cold air from the garage keeps the basement room very cold in the winter. Is this vent cutout necessary or can it be covered up?
Yes, it is necessary. What you’ve described is a combustion air vent. It’s designed t bring fresh air into the heating system so that it burns cleanly and safely. It wold be potentially dangerous to block t.