This is a sources sought announcement for water treatment and HVAC system maintenance services at Dover Air Force Base, Delaware. The required services include controlling corrosion, slime, and algae in condensers, and servicing thermal ice storage, closed-loop systems, gas-fired heating systems, and water softeners. The announcement is for market research to identify capable small business contractors; there is no solicitation or budget information available at this time. Interested parties must provide their business size standard, socioeconomic status, and applicable NAICS codes. Responses are to be submitted to the specified Contract Specialist and Contracting Officer via email.