When Your Boiler Is Telling You Something’s Wrong
Most boiler problems don't appear out of nowhere. There's usually a period — sometimes weeks, sometimes months — where the system is showing signs of trouble before it actually fails. Learning to recognize those signs can save you from a cold night with no heat and an expensive emergency repair bill. The first thing to watch for is inconsistent heat. If you're adjusting the thermostat more than usual to stay comfortable, or if certain rooms never quite warm up, your boiler might be struggling to maintain consistent output. This can stem from several issues — a partially blocked heat exchanger, failing zone valves, or low water pressure in the system. Boilers should also be mostly quiet when running. A low hum is normal, but clanking, rumbling, or a high-pitched whistling…

