Unless your boiler and other gas appliance have been checked with a manometer or other gas safety checking device you are unlikely to have any reassurance as to the soundness of your system.
It is also illegal (and a very serious offence) for an unregistered plumber/gas engineer (home owner or otherwise) to tamper with gas fittings. For yours and your neighbours sake I would recommend you call a registered gas engineer to check your appliance as soon as possible.
Red hot
December 2010
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