Flue Hole

Tom_42

I was examining my boiler to see what the system is and I noticed a small hole (like for a screw) in the metal flue that leads to my chiminey. Not sure if this is good or bad. Can someone advise?

Thanks!
Tom

kevin coppinger_4

Is it oil or gas?

If its oil often times there is a hole drilled in the side to test for combustion. You could put some foil tape on it or place a screw in it of the same size. kpc

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Tom_42

Oil it is

I just wanted to make sure that no harmful gas was entering my basement. Thanks!