GoshenPlumber
Goshen Plumber
Location: Morgantown, WV
Heating system: Oil fired boiler, Hot water baseboard
About every 2-3 weeks, I hear air in the hot water baseboard piping when the furnace starts. This only occurs for one day and then I do not hear the air for another 2-3 weeks. There is a working air purge on the boiler (I can occasionally hear the air escaping). If the boiler + piping is a closed system, why is the air noise intermittent? I would think that eventually all of the air would be exhausted through the purge. Or is this the case that there are air bubbles trapped in the piping, perhaps at corners, and that these air bubbles occasionally escape and cause the noise?
Heating system: Oil fired boiler, Hot water baseboard
About every 2-3 weeks, I hear air in the hot water baseboard piping when the furnace starts. This only occurs for one day and then I do not hear the air for another 2-3 weeks. There is a working air purge on the boiler (I can occasionally hear the air escaping). If the boiler + piping is a closed system, why is the air noise intermittent? I would think that eventually all of the air would be exhausted through the purge. Or is this the case that there are air bubbles trapped in the piping, perhaps at corners, and that these air bubbles occasionally escape and cause the noise?
