Whether you're a renter or a home owner, if you pay for your heat and have a thermostat you can control, then installing a programmable thermostat would be well worth your while. Using a programmable thermostat eliminates the need to remember turn the temperature up (or down) which can end up saving you quite a bit of energy and money. Programmable thermostats range from $20-$150 or more. Worried about how to install it? Don't be. We've got a tutorial on how to do it right here.