I always leave my sold state gear fully powered up. It takes at least a full day or so to peak from a cold startup. Thermal cycling reduces equipment life, which is another consideration beside the higher electric bill. The energy isn't really wasted (about 9 months of the year it contributes to household heating) & power is cheaper in the midwest nowadays than natural gas anyway.
To "7671" your LED's can actually last longer than you will.
To "7671" your LED's can actually last longer than you will.