HouseSymptoms field intelligence
Symptoms
Start with the visible, audible, physical or measurable sign—not the name of the fault.
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Carbon monoxide alarm activates
A working alarm indicates detected carbon monoxide or a device fault that must not be ignored.
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Smoke smell from a fireplace when not in use
Smoke odor enters the room without an active fire.
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Boiler makes a kettle-like noise
Rumbling or whistling rises with burner operation.
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Radiator is cold at the top
Upper portion remains cooler than the rest.
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Black marks above a radiator
Dark streaks rise above a heat source.
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Clicking pipes after heating switches off
Short repeated clicks often come from thermal movement where pipes pass through clips, floors or framing.
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Pipes click as heating cools down
Light repeated ticks follow the heating cycle.
