I moved into the house I currently live in 4 years ago. Over the past winters and summers two rooms were always hotter in summer, cold in winter, one of those rooms has my thermostat in it!
This is an old house, three stories, with a furnace in the third floor and in the basement.
the ductwork for all of the second floor where the problem is originates in the third floor attic space and then has to travel across the attic down the walls and out to the rooms.
I have called no less than 3 people to resolve the issue without results.
So here is what I have figured out, the main trunk is 12 inches and comes off in the attic, it has a few branches to other rooms that work fine, but attached directly inline to the main trunk is a 10 inch flexible line that travels and then drops down the wall, it then is split in the celing of the second floor to multiple vents that are in the ceiling of the two rooms.
Origionally the 12inch trunk had a 8 inch takeoff installed on it taped to a 10 inch flexible line.
I dont know if that is how it is supposed to be done, but I took it off, and put a 10inch takeoff on instead and reattached the 10inch flexible duct, and then sealed the flexible line back on.
No major change.
These vents produce nothing or next to nothing in terms of air flow and I think this may be simply too far in terms of airflow to get adequate heating and cooling.
A few questions
Are flexible insulated ducts a good product for this application, and do they reduce air flow?
Would a booster fan do the trick installed close to where the duct drops down the wall?
Can I wire the booster fan to the control board humidifier connection and a hot line so it only runs when the blower operates?
thanks for any help