air test - gas lines leaking

[Robert D.]

I have a 3br single family with no basement. The gas lines are leaking somewhere. I need to connect compressor and do the air pressure test. The furnace and water heater is connected. Where would be an ideal place to connect the compressor ? outside, by the water heater etc ? and what size of compressor I need. Would 5-6 gallon compressor be enough ? are there any no-no’s while doing the job ? I definitely do not want to damage the lines pumping to much air.