If your system is well-installed and properly maintained, the chances of a boiler exploding are slim to none. In reality, a boiler exploding isn’t a mystery, it’s usually preventable. A boiler can explode if extreme pressure builds up and has nowhere to go, just like a pressure cooker. Don’t wait until you’re dealing with a house boiler explosion or emergency call about a boiler blowing up. Do that, and the risk of a boiler exploding drops to near-zero.