When I started noticing that our furnace wasn't working quite right, I immediately blamed it on my system. I thought that it simply wasn't producing warm air, so I hired a professional to come out and check the system. However, as soon as he started inspecting things, he noticed several large leaks between junction points and around corners. He mentioned that if there were leaks in the lines, the heated air wouldn't be able to travel to the right room. He went through my entire home and repaired the ducts, and you wouldn't believe the difference it made. Check out this blog to learn more about finding duct leaks.