Negative pressure in home. Central AC and Mushroom Attic Fan(not whole house)
I just had a home science guy come to the house and and test my HVAC and attic fan and see what the negative pressure was or would be.
I suspected with the attic fan I had high negative pressure because when the attic fan turned on the humidity would rise in the home, along with the temperature.
Attic fan genartes around -6 pascals when it's running in my home .
The central air conditioning, air handler in the attic, return on the second floor above stair case, with the doors closed to the bedrooms have a out -5 pascals when the doors are open it drops a little to about a -3
My attic was recently sealed and did insulation. I also ran new duct lines in the attic and did duct sealing.
The guy just told me like 100 different things I could do and left. Didn't really write anything down. He was absolutely awesome at testing but terrible at options 😂 so that's why I'm here wtf should I do.
I have an attic that's buried in insulation and difficult to work in. Is this a common problem?