This solicitation is a 100% Total Small Business Set-Aside for a firm-fixed-price annual service contract covering two semiannual onsite preventive maintenance and inspection visits for air compressors, oil-water separators, air dryers, and air filters. Services will be performed at multiple building locations aboard Naval Submarine Base New London in Groton, CT. The contract includes a base year, three one-year options, and one six-month option, with a total period of performance from 01 September 2026 to 28 February 2031. The contractor must provide all labor, maintenance-related parts, and travel, and active SAM.gov registration is required prior to award. Award will be based on price, though past performance may be considered if the low-price quote does not represent best value.