That loud bang when your furnace kicks on isn't just annoying, it could mean something's wrong inside your system. Most homeowners ignore it until their heat stops working completely on the coldest night of the year. The noise usually comes from delayed ignition where gas builds up before lighting, or from metal ducts expanding and contracting. Sometimes it's harmless, but other times it signals a cracked heat exchanger or failing ignition system. If you're hearing it every single time your system starts, don't wait. A quick check from a Furnace Repair Service White City OR can tell you if it's a simple fix or something more serious. And while you're at it, ask about your cooling system before summer hits, getting AC Installation Service near me scheduled early beats sweating through July. 541 Cooling and Heating LLC : https://www.google.com/maps?cid=11754017492209551362 Read the full story : https://socialytime.com/blogs/118573/Why-Your-Furnace-Makes-That-Banging-Noise-Every-Time-It