Install a Programmable Thermostat: A programmable thermostat doesn’t cost much and its cost can be recovered from the amount that you save by reducing energy. The easiest and most cost effective advice is simply adjusting your thermostat up 1 degree down in the winter and up by 1 degree in the summer. Lower your thermostat 2 degrees in the winter. Instead of making your home a burning furnace, try putting on extra layers.