good I am glad you did not feel too angry.

so lets go slow  to a fix.

1 unit  in the box   how big is the box  and how big are the tubes you use?

also how long are the tubes?

big tube diamater help  10 inch  not six inch.
shorter tubes help  
how warm is the room?

70f  = good
80f   = okay
90f   = not so good
100f = bad

next  the exhaust tube gets the air out of the room correct?

If you have a long exhaust tube  it will need a fan  to pull the air out.