Working in the A/C world is the same way, residential or commercial. At houses the customer is smarter than the companies employee that gets sent out, but can't seem to figure it out himself. Then in the commercial end, the office people can't get comfortable. So they block off the registers with what ever their little hearts desire. Then the air naturally flows at a faster pace to the othe registers. Before you know it most of the registers are covered up, the equipment is froze up and now every one is hot.

People don,t think about the consequences of their actions or the reason things are and the way they are set up that way.

Some people are just too good for even their own good.