If you hear unusual noises like rattles, rumbles, booms, and bangs coming from your heater, they could be caused by anything from a clogged filter to a faulty part or loose ducts. Loud booms and bangs in particular often indicate a serious situation that requires calling a professional. If you’re concerned about the noise coming from your heater, turn the system off and call the pros who can let you know quickly if you need heating repair or heating replacement services.