This is a Sources Sought notice for planning purposes to identify potential contractors for a project to replace an R22 HVAC system and upgrade Siemens controls at Joint Base Andrews, Maryland. The project's magnitude is between $1,000,000 and $5,000,000. The work involves replacing and upgrading field panel controllers across multiple specified buildings to comply with base design guidelines and regulations. Interested parties must submit a notice of intent to bid as a prime contractor, which includes a completed form, relevant project history, and an outline of resources. This market research may lead to a subsequent solicitation, which could be set aside for small businesses or advertised as unrestricted.