Yonkers oil heat is a single-family story: 275-gallon basement tanks behind the boiler, fill pipes poking out of the foundation wall, delivery trucks backing up steep driveways in January. A few older properties still sit on buried tanks of uncertain age — if that is you, say so on the call, because tank assessment jumps the priority list. Basement tanks corrode at the legs and seams, sludge collects at the pickup, and a filter bowl gone black tells you the burner has been breathing dirty fuel.
Winter’s signature failure is the run-out: automatic delivery slips during a cold snap, the float sticks, and the burner dies on an empty tank. Check the gauge before you assume the worst — a run-out restart is a different, simpler procedure than a burner repair, and knowing which one saves everyone a wasted trip.