USA Compression Partners, LP through its wholly owned subsidiary USA Compression Partners, LLC (Operating Subsidiary) and Operating Subsidiary�s wholly owned subsidiary USAC Leasing LLC, primarily provides natural gas compression services under term contracts with customers in the oil and gas industry, using natural gas compressor packages that it designs, engineers, operates and maintains. As of September 30, 2013, the Company had approximately 1,162,353 of fleet horsepower. It provides compression services for a monthly service fee. As part of its services, the Company engineers, designs, operates service and repair its fleet of compression units and maintain related support inventory and equipment. The fleet of compression units that it owns and uses to provide compression services consists of engineered compression units that utilize standardized components, principally engines manufactured by Caterpillar, Inc. and compressor frames and cylinders manufactured by Ariel Corporation.