Z--HVAC Upgrades, Mammoth Cave National Park

This solicitation, numbered 140P5126R0010, is for the replacement of eighteen HVAC systems across eleven buildings at Mammoth Cave National Park in Kentucky, under a Total Small Business Set-Aside as defined by FAR 19.5 and NAICS code 238220. The work includes removal and disposal of existing units, EPA refrigerant recovery, installation of new 14–15 SEER2 cooling and 92% AFUE heating systems, refrigerant line sets, programmable thermostats compliant with ABA accessibility standards, electrical connections, ductwork modifications, condensate drain installation, startup, testing, and commissioning, along with mobilization and equipment rental. All equipment must meet ASHRAE, AHRI, and DOE efficiency requirements, and MERV 8 filters are mandated. The period of performance is 180 calendar days from the Notice to Proceed, and the Contractor must submit a detailed project schedule within fourteen days of NTP issuance. A preconstruction conference is required to coordinate work sequencing, safety, environmental compliance, and park operations, with strict protocols to minimize disruption to active administrative, housing, and support facilities while maintaining access to entrances and emergency exits. Proposals must include complete pricing for all base and option line items, with unit pricing governing calculation errors and corrected summation totals governing summation errors; all amounts must be rounded to whole dollars. Pricing must be submitted using the provided format, with lump-sum items showing only the total and unit-priced items showing both unit and extended price. Offerors are encouraged to submit cost-saving alternates that clearly justify their advantages. A bid bond is mandatory, executed by an approved surety listed by the Department of the Treasury, and past performance evaluations will assess the offeror’s ability in performance, timeliness, and quality of work using definitions ranging from Exceptional to Unsatisfactory. Evaluation for award is based on best value to the government, with pricing completeness being a mandatory pass/fail gate. Submittals must include HVAC specifications, shop drawings, commissioning documentation, O&M manuals, and as-built records, with final acceptance dependent on COR inspection, system testing, delivery of warranties, and demonstration of operation to National Park Service maintenance personnel. Site visits are strongly recommended but do not relieve the Contractor of responsibility for full compliance with all specifications. All work must comply with OSHA 29 CFR 1926 and applicable ANSI standards for safety and protective equipment.