I decided to call Nicor Gas this morning, because I smelled some gas around the meters. They sent a technician out promptly, and found that there was a pipe pushing gas out the house from the same one feeding into the house. He wrote on the tag that gas had to be shut off due to safety relating to backfeed from fuel line that goes into the house. Sounds like contractors who did rehab tied two gas lines inside into one somewhere. The Nicor tech told me I have to hire a plumber to trace the pipe causing this. This house was converted from a 2 unit home to a single family. Is there anything i should be looking for before I call someone or just hire a plumber who specializes in gas plumbing?
If it was two homes there are probably two meters. If you see a second meter turn one off .If they are tied together anywhere the one working meter will feed everything. If however they removed the meter and piped straight across where the meter used to be.... you have an un metered line feeding the house. That's the first thing to look for. The place where the second meter used to be. EITHER WAY HAVE A PROFESSIONAL HAVE A LOOK