We can replace your old incandescent recessed lights with more energy efficient LED’s. The home owner told me he has replaced many of his lights throughout his home with LED’s and has noticed a significant decrease in his electric bill, as much as $500! He bought a couple of 4-packs From Costco for about $60 (Better deal than Home Depot), and I replaced them. Costco also sells 4″ recessed LED’s. These lights are also dim-able!