Every so often there is anatural gas leak smell coming from the furnace or water heater since summer of 2010 . It is now October and back again . It really seems to be at the furnace side though. Any ideas?

If you haven't had your furnace serviced in a while, I suggest you do. Here in Ontario we don't service our own gas furnaces, nor do we go without servicing. An efficient gas furnace cuts down on expenses.

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