What you'll notice first
A boiler in trouble usually tells you before it quits outright. Rooms that used to heat evenly now have cold spots. The burner takes a few tries to catch, or makes a popping or rumbling sound it didn't before. Pressure on the gauge drifts down and needs topping off more often than it used to. Water around the base, even a little, means something is leaking somewhere in the system.





