NIGP 91173: Domestic Hot Water

NIGP 91173 Domestic Hot Water, an Item code, covers the supply, installation, and replacement of domestic hot water systems and components in state and local facilities. Recent solicitations show state and local governments purchasing complete DHW system overhauls—including equipment procurement, piping installation, controls, storage tanks, venting, and permitting—for municipal auditoria, water treatment plants, recreation centers, and utility infrastructure. The code encompasses both retrofit upgrades to existing facilities and new installations, with contractors typically responsible for demolition of existing systems, provision of specified equipment (such as boiler units and storage tanks meeting particular BTU and capacity ratings), all interconnected piping for gas, electrical, and cold-water feeds, and final permitting compliance.

The issuing-body mix includes city procurement offices, county departments, water authorities, and military departments. The Oregon Military Department (Salem Auditorium), the City of Palm Bay (North Regional Water Treatment Plant), and the Beaufort-Jasper Water and Sewer Authority (South Carolina) represent recent activity. Geographic spread includes Oregon, Florida, Georgia, and South Carolina. Representative recent opportunities include the Oregon Military Department's RFQ for Salem Auditorium domestic hot water system upgrades (due April 23, 2026), which sought complete replacement of the existing DHW system with an AO Smith BTR197 100-gallon heater, 120-gallon storage tank, circulation pump, controls, and new venting, with a mandatory pre-bid conference on April 14, 2026; and the Beaufort-Jasper Water and Sewer Authority's IFB for the Alljoy Low Pressure Sewer Phase 1 project (due March 24, 2026), which included DHW system components as part of broader infrastructure work. Prevailing wage and bonding requirements are typical, and contractors must often hold relevant licenses (such as Florida water well contractor certification) and submit proof of insurance with substantial coverage minimums before award.