| | NMZ - SERVICES,NATURAL HISTORY BUILDING (COTR)B. SPENCER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $32,393 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Sep 22, 2025 | Sep 22, 2025 | Jan 31, 2026 |
| | DEHUMIDIFIER UNIT REPAIR | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $3,335 | BUREAU OF LAND MANAGEMENT | BUREAU OF LAND MANAGEMENT | — | 561210Facilities Support Services | S216HOUSEKEEPING- FACILITIES OPERATIONS SUPPORT | Aug 27, 2025 | Aug 27, 2025 | Oct 15, 2025 |
| | MAINTENANCE AGREEMENT CFCH WAREHOUSE HVAC SYSTEMS 2025 | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $14,344 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Aug 11, 2025 | Aug 11, 2025 | Aug 11, 2025 |
| | NMZ - SERVICES,NATURAL HISTORY BUILDING (COTR)B. SPENCER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $63,400 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | May 20, 2025 | May 20, 2025 | Dec 15, 2025 |
| | NMZ - SERVICES,NATURAL HISTORY BUILDING (COTR)B. SPENCER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $35,225 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Feb 24, 2025 | Feb 24, 2025 | Jun 30, 2025 |
| | TITLE V TESTING ON (3) CLEAVER BROOKS BOILERS | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $16,110 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 561210Facilities Support Services | Z1EBMAINTENANCE OF MAINTENANCE BUILDINGS | Oct 23, 2024 | Oct 23, 2024 | Nov 20, 2024 |
| | TITLE V TESTING ON CLEAVER BROOKS BOILER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $10,725 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 561210Facilities Support Services | H141QUALITY CONTROL- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Sep 19, 2024 | Sep 19, 2024 | Nov 15, 2024 |
| | NMZ - SERVICES,NATURAL HISTORY BUILDING (COTR)B. SPENCER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $65,560 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J014MAINT/REPAIR/REBUILD OF EQUIPMENT- GUIDED MISSILES | Jun 28, 2024 | Jun 28, 2024 | Sep 15, 2024 |
| | NMZ - SERVICES,NATURAL HISTORY BUILDING (COTR)B. SPENCER | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $47,835 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Jun 3, 2024 | Jun 3, 2024 | Aug 31, 2024 |
| | SERVICE: TITLE V TESTING FOR BOILER GASES AT NMAI | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $15,590 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Oct 23, 2023 | Oct 23, 2023 | Dec 21, 2023 |
| | MAINTENANCE AGREEMENT CFCH WAREHOUSE HVAC SYSTEMS 2024 | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $13,864 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Oct 20, 2023 | Oct 20, 2023 | Oct 20, 2023 |
| | BOILER TESTING | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $10,394 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Oct 19, 2023 | Oct 19, 2023 | Dec 21, 2023 |
| | QUARTERLY PREVENTIVE MAINTENANCE AND EMERGENCY SUPPORT SERVICES FOR A/C UNITS | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $473,634 | BUREAU OF THE FISCAL SERVICE | FINANCIAL CRIME ENFORCEMENT NETWORK | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Sep 26, 2023 | Sep 30, 2023 | Sep 29, 2026 |
| | SERVICE FOR NZ | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $15,015 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 541380Testing Laboratories and Services | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Dec 5, 2022 | Dec 5, 2022 | Dec 5, 2022 |
| | SERVICE FOR UNWZ | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $15,015 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 541380Testing Laboratories and Services | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Dec 1, 2022 | Dec 1, 2022 | Feb 21, 2023 |
| | MAINTENANCE AGREEMENT CFCH WAREHOUSE HVAC SYSTEMS 2023 | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $17,276 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | H241EQUIPMENT AND MATERIALS TESTING- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Oct 6, 2022 | Oct 6, 2022 | Sep 30, 2023 |
| | REPLACE THE IPVB 350 INLINE POWER VENTER AT COOPER HEWITT | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $25,036 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | J041MAINT/REPAIR/REBUILD OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Sep 19, 2022 | Sep 19, 2022 | Dec 12, 2022 |
| | MD-PATUXENT RES CTR-HVAC COMPRESSOR | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $19,260 | US FISH AND WILDLIFE SERVICE | US FISH AND WILDLIFE SERVICE | — | 811310Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | 4130REFRIGERATION AND AIR CONDITIONING COMPONENTS | Jul 27, 2022 | Jul 27, 2022 | Jul 26, 2023 |
| | NMZ - SERVICES, NATURAL HISTORY BUILDING (COTR) L. CHRISTIAN | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $17,310 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 236220Commercial and Institutional Building Construction | J045MAINT/REPAIR/REBUILD OF EQUIPMENT- PLUMBING, HEATING, AND WASTE DISPOSAL EQUIPMENT | Jul 1, 2022 | Jul 1, 2022 | Feb 28, 2023 |
| | TITLE V TESTING FOR NMAI-DC | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $14,610 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Dec 22, 2021 | Dec 22, 2021 | Dec 22, 2021 |
| | SERVICE FOR UNWZ | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $14,610 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | H941OTHER QC/TEST/INSPECT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Nov 18, 2021 | Nov 18, 2021 | Feb 21, 2022 |
| | NMZ - SERVICES, NATURAL HISTORY BUILDING (COTR) L. CHRISTIAN | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $8,595 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 236220Commercial and Institutional Building Construction | L041TECHNICAL REPRESENTATIVE- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Nov 12, 2021 | Nov 12, 2021 | Jan 31, 2022 |
| | REPLACE RETURN AIR DAMPERS FOR AHU'S AT NMNH | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $16,200 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | L041TECHNICAL REPRESENTATIVE- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Sep 1, 2021 | Sep 1, 2021 | Dec 31, 2021 |
| | REMOVE AND REPLACE PIPE ON CONDENSATE TANK LINE AT MSC | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $10,940 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 238220Plumbing, Heating, and Air-Conditioning Contractors | N045INSTALLATION OF EQUIPMENT- PLUMBING, HEATING, AND WASTE DISPOSAL EQUIPMENT | May 26, 2021 | May 26, 2021 | Jul 30, 2021 |
| | NMZ - SERVICES, NATURAL HISTORY BUILDING (COTR) L. CHRISTIAN | AMERICAN MECHANICAL SERVICES OF MARYLAND, L.L.C. | $13,235 | SMITHSONIAN INSTITUTION | SMITHSONIAN INSTITUTION | — | 236220Commercial and Institutional Building Construction | L041TECHNICAL REPRESENTATIVE- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT | Apr 30, 2021 | Apr 30, 2021 | Jun 18, 2021 |