On the test question 28 needs to be re worded. It askes how much insulation a duct needs when ran through an unconditioned space. But it doesn’t state if it’s running through a wall or ceiling. As far as I know, the duct has to be insulated to meet the same r value as the ceiling or wall that it passes through. Just felt the question needs to state it to make it a more fair question. At the moment you have to guess which it is.
