If you're concerned about keeping a green home, energy efficiency goes hand in hand with eco home products and concepts. And since it's getting chilly again, I thought I'd give you a little refresher on ways to keep your house as energy efficient as possible. It's generally recommended that, to save money on heating, try to keep your thermostat set at a reasonable 68 degrees. Every degree warmer you set your thermostat will increase your energy use by 6-8 percent, which also means a rise in your heating bill. So, instead of notching up the thermostat, take a quick tip from me and layer up instead.