Conducted a diagnostic visit for a reported boiler issue in Philadelphia, PA 19144, after our club member noticed persistent knocking noises over the past few days, along with a “gargling” or teapot-like sound coming from the steam outlet. The noises were significant enough that she has been shutting the boiler off at times, and a downstairs neighbor also confirmed hearing similar sounds, indicating a system-wide condition rather than an isolated pipe issue. During the visit, we noted that the steam boiler has not yet had seasonal heating maintenance performed, which can commonly lead to water-level imbalance, trapped air, or sediment buildup, causing these symptoms. Findings were reviewed with the homeowner, and next steps were discussed to restore proper, quiet, and reliable boiler operation.