Kala-replace HVAC and humidity control system in t

The National Park Service seeks replacement of the HVAC and humidity control system in the Parks Curatorial Facility at Kalaupapa National Historical Park, Hawaii, with sealed bids due May 8, 2026 (updated from original May 1 date). This is a 100% small business set-aside under NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors), with a firm-fixed-price contract structure.

Place of performance is Kalaupapa National Historical Park, 7 Puahi Street, Kalaupapa, HI 96742. The scope includes furnishing and installing five mini-split air-conditioning systems (eight fan coil units and five air-cooled condensing units with capacities ranging from 24,000 to 60,000 BTU/hr, primarily Mitsubishi equipment or approved equals), four commercial dehumidifier units (PERFECT AIRE Model 3PACD250), and four-inch reinforced concrete pads. Work must commence within 7 calendar days of notice to proceed and complete within 150 calendar days, with period of performance May 11 to October 8, 2026. The contract is priced as a single lump-sum line item (CLIN 00010), with an optional deduct if the government pre-constructs concrete pads.

All contractor personnel must comply with Kalaupapa Settlement rules and State of Hawaii Department of Health requirements. Work is restricted to daylight hours (6:00 a.m. to 4:00 p.m., Monday–Friday). Equipment arrives by barge in mid-August 2026 with strict invasive species prevention protocols required. HVAC equipment must connect to existing electrical panels via automatic transfer switch; five units designated for backup generator power (Panel C) and three for normal power (Panel B). Bid guarantees equal 20 percent of bid price or $3 million, whichever is less. Performance and payment bonds at 100 percent of contract price are mandatory. Questions were due April 20, 2026. Offerors must register in SAM.gov, and a mandatory site visit was scheduled for April 22 or 23, 2026 (pre-registration required by April 17).