I was called to a job where the customer did some remodeling to
a store, the customer turned it into a dance studio. she added a reception
area that measures 12x2 x 19x8 and the height of the place is 8x9.
When I looked at the vent setup in the reception area had 2 supplies
and no returns. I informed them that they needed a return in order to
circulate the air in the reception area. I put in a return, I used 8' round flex
duct and added a perforated lay in on the ceiling. But the air is still not
circulating. My question is should I have used rect.ductwork instead of
round, is my return to small for the space.? I know how to check cfm
for residential but not sure on commercial units. I brought an
aneomometer but the instructions on it are not clear and I do not
know how the unit works I called the company that makes it and they
told me to go to the place where I purchased it for instructions.
This is my second job were the issue is are flow and it has me