Why not just get a $20 timer from Home Depot? My Father's been doing this for years, he runs the water heater approximately 1 hour before he gets up for work, and still has hot water when he comes home. Not HOT HOT, but at least enough to wash hands, couple dishes, etc.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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