Will Duct Repairs Reduce Cooling Load?
 
If the air conditioner is oversized (that is, not constantly operating during the hottest conditions), then two things happen after a retrofit. First, the air conditioner operates even less during the peak. That means peak power savings. (Mission accomplished!) Second, the indoor temperature may change. In the case of oversizing, there's no reason to expect any changes because the occupants were already comfortable before the retrofit (see ).


Figure 1. Electricity load for oversized air conditioner before and after duct retrofit.

Figure 2. Electricity load for undersized air conditioner before and after duct retrofit.