Bottle - plastic - widely recycled. At stahl plumbing, heating & air conditioning, we offer gas line repair, inspection and installation services, assuring that your natural gas line will safely serve your pittsburgh home or business. If you can't find out who is responsible for a problem on or near your property, our environmental health team may be able to provide advice. Copyright 2018 - e•d•s air conditioning and plumbing | site experience by fortify. The ecoblue heat and the advance heat.