There is nothing worse than waking up cold in the middle of the night.
It's one thing if you just need to pull the covers up. It's a whole different issue if your furnace is working poorly or not working at all.
With a little do-it-yourself experience, you can troubleshoot and repair your furnace yourself. Your best bet though, is to have a maintenance check list for your heating system to avoid the problem.
Today I have something that will make you feel like you have the knowledge to tackle some furnace repairs:
19 common furnace problems and how to fix them right now.