OP since payoff and energy savings are your goal, I have great news.
Spend your money on the cheap easy fixes to get real savings. In duct work the savings are found at the joints, both the junction boxes and at the ceiling penatrations. Your installer used duct mastic or foil sided 'duct' tape. The did the junction boxes in a rush and probably missed several areas, and none at all at the penatrations. Your can lights, which have a high heat shut off built in, are a huge energy waster. Any light tubes are not sealed at the ceiling.
Look to these areas for savings and cleaning your evaporator coils on your outside ac unit. That costs only the water to spray it down.
|