I have a two story 2500sq ft house in Delaware. I have a York heat pump
system that I plan to replace. The upstairs is always hotter than the downstairs. I brought a TSI velocimeter home from work and measured the air flows going into the air returns throughout my house. I measured the size of the air returns and calculated a cfm for each air return. Then I totaled the whole house up and got about 970cfm. 600 of that cfm is going through the downstairs returns, leaving about 350 for the upstairs.
I tried closing up some of the downstairs air returns partially and the cfm total for the upstairs started to improve.
Does what I am doing make sense? Could I "balance" the split between upstairs and downstairs and improve the uniformity of temperature in the house? Will I be doing something wrong to close up partially the downstairs returns?
I have alot of numbers that I could show if that would matter.
Any help is appreciated. Thanks.