October in York County brings cool nights and the first runs of the furnace or boiler. Homes, from downtown rowhomes to old farmhouses, respond with new sounds. Most have ordinary explanations.
Before tracking one down, note when it happens, where it seems to come from, and what else was going on.
Why Homes Creak and Pop
Wood framing, plank floors, and plaster contract as nights cool and dry out once the heat runs. Older farmhouses and rowhomes tend to be talkative. New cracks, sticking doors, or soft floors are worth a professional look.
Plumbing and Well Sounds
A bang after the washer shuts off is often water hammer. Homes with wells hear the pump cycle. Running water when nothing is on deserves attention.
Oil Burner, Boiler, and Furnace Sounds
Oil burners rumble at ignition. Boilers and radiators gurgle or knock when air is trapped. Heat pumps hiss in defrost mode. New grinding, squealing, a loud puff at startup, or a strong smell is worth a call. If you smell gas or propane, leave and call your utility or supplier or 911 from outside.
Wind Rattles
Fall wind can whistle through gaps around older windows and rattle loose shutters, gutters, and vents.
Mice, Squirrels, and Bats
Mice move indoors as it cools and are active at night. Squirrels are daytime visitors. Barns and outbuildings attract both. Bats sometimes roost in older attics. A licensed wildlife professional can help.
What to Tell the Professional
Describe the sound, where and when you hear it, and what else is running. "The radiator in the back bedroom knocks for the first ten minutes after the heat comes on" gives a technician a clear starting point.
If you'd like a recommendation for a local plumber, heating technician, or wildlife professional, just ask. We're happy to share names we know.
Frequently Asked Questions
Why does my oil burner rumble?
Some rumble at ignition is normal. A loud puff is worth a service call.
Why do my radiators knock?
Trapped air is a common cause.
Why does my old farmhouse creak?
Wood framing moves with seasonal temperature and humidity changes.
Are bats common in York County attics?
They can be. A licensed professional should handle removal.
What should I do if a CO alarm sounds?
Get everyone outside and call for help.
Thinking about selling your home?
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