Gas appliances can stop working for a bunch of reasons, from obvious supply issues to small things you might easily miss. Whether it’s your stove, water heater, or furnace, figuring out what’s wrong usually comes down to a few common problems. This article breaks down the most likely causes, how to check them yourself, and signs it’s time to call in a pro. We also dig into what you shouldn’t mess with for safety’s sake. If your gas appliances just went silent, you’ll know what to look at first.