If you totally neglect many older boilers, there's a very good chance they will soot up and stop working. Thermocouples are also notorious for failing - as are pilot lights blocking up.
It will depend on the make and luck to some extent.
If you totally neglect many older boilers, there's a very good chance they will soot up and stop working. Thermocouples are also notorious for failing - as are pilot lights blocking up.
It will depend on the make and luck to some extent.
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