We specialize in oil & gas delivery, heating, cooling, Servicing mid Pennsylvania, including Williamsport, Lewisburg, Sunbury, Pottsville, Hazleton, Wilkes-Barre, Back Mountain, and surrounding towns. Call for a FREE estimate. About Miller Gas and Oil Miller Gas & Oil Inc. was founded in 1928 by Frank J. Miller and his wife Vera in Shamokin, PA. Today the third generation works to meet the heating and cooling needs of our neighbors. We are a full service company, providing quality products and dependable service with a dedication to making Central Pennsylvania homes safer, more efficient and more comfortable, year-round.