There are things you can do to reduce heating or air-conditioning costs, but a lot of them cost some money. However, there are several easy steps that you can take that cost little or nothing, but still save you money. Take our quiz to learn some useful ways to increase your home's heating and cooling efficiency.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!