What do you know about efficient home heating?

Hopefully you've got all those air leaks in your house sealed up by now. The next step is to be more efficient with heating your home. You can reduce the energy needed to heat your home up to 20% simply by turning the thermostat down 10°F - 15° when you are asleep or out of the house. The most effective and convenient way to save energy this way is to install a programmable thermostat. When used properly, programmable thermostats can save you about $150 per year.

What has your experience been with heating your home? Have you come across good resources or services that you'd like to share with the cool crowd? Do you have products you'd recommend? Did you turn the heat down and notice a difference in your energy bill? We're curious to know your thoughts.

There's also more information and links on the ImCool.info site under the "Heating your home" category.