Space heating is likely the largest energy expense in your home, accounting for about 45 percent of the average American family’s energy bills. That means making smart decisions about your home’s heating system can have a big impact on your energy bills. Our Energy Saver 101 infographic lays out everything you need to know about home heating -- from how heating systems work and the different types on the market to what to look for when replacing your system and proper maintenance.

Download individual sections of the infographic or a high resolution version now.