Why Is My Furnace So Loud? Causes, Fixes & When to Call a Pro

A furnace should heat your home quietly. When it suddenly becomes loud — booming, rattling, whistling, humming, or squealing — it’s a signal something has changed inside the system. If you’re asking “Why is my furnace so loud?” A loud furnace is often caused by a worn-out blower motor, dirty air filter, or issues with the ductwork, such […]


