NIGP 55905: Air Conditioning, Heating and Ventilation (Including Defrosters and Defoggers)

NIGP 55905 Air Conditioning, Heating and Ventilation (Including Defrosters and Defoggers), Item code, encompasses replacement and service of HVAC components, breathing air purification systems, and associated equipment across transit authorities, municipal airports, state military facilities, and county infrastructure. State and local governments procure replacement chillers, evaporator coils, condenser blower assemblies, fresh air and mixed air filters, heater cab elements, compressor isolators and repairs, and comprehensive maintenance contracts under this code. The issuing bodies include transit authorities (Dallas Area Rapid Transit Authority and Dallas County for light rail vehicle fleets), state military departments (Oregon Military Department), municipal airports (City of Dallas Department of Aviation), and county governments (Monroe County Board of County Commissioners in Florida). DART emerges as a repeat high-volume buyer, soliciting components for light rail vehicle climate systems across multiple procurement cycles since January 2026.

Recent activity concentrates in Texas and Florida, with DART dominating activity through numerous component and parts solicitations and Dallas County pursuing rebuilt compressor assemblies for super light rail vehicle fleets. The Oregon Military Department issued an RFQ for breathing air purifier replacement at Camp Withycombe (RFQ 260047C001, quotations due July 21, 2026), scoped to include full system removal, demolition, disposal, and installation of new equipment with controls. Monroe County Board of County Commissioners issued an RFP for countywide chiller maintenance and service across multiple locations (RFP 633, proposals due June 17, 2026), seeking a Type III or Universal-certified HVAC contractor with hourly rates for mechanic and senior specialist services, parts markups capped at 15%, and a stock parts pricing list. The City of Dallas Department of Aviation issued a rebid RFB for removal and installation of twenty pre-conditioned air HVAC units at Dallas Love Field (RFB CIZ26AVI3216, bids due February 20, 2026), with a fourteen-month contract term, two optional one-year renewals, liquidated damages of $2,000 per day, mandatory pre-bid conference and site visit on February 5, 2026, and living wage requirements of at least $23.06 per hour. DART's purchase orders dominate the sample with rapid-cycle component procurement (fresh air filters, evaporator coils, HVAC valve repair kits, heater assemblies) due dates typically within seven to fourteen days of posting, reflecting ongoing fleet maintenance and replacement needs.