When homeowners and businesses choose Cenex Chehalis for their source of propane, they get comfort that's clean, efficient, reliable and affordable. For furnaces and fireplaces, cook tops and water heaters, propane's the obvious choice. As your local Cenex Propane Partner offers you a reliable source of consistent propane comfort and great service too. Propane Bottle Refilling Kerosene Propane Tank Purchase and Installation. It's the commitment Cenex made over 70 years ago, and it's how we still do business today. At CHS, we're dedicated to providing you with high quality, dependable fuels to keep you going for a long time to come. Quality, Cenex brand fuels in Chehalis WA are refined right here in the United States and distributed at over 2,000 Cenex-affiliated locations.