Naval Sea Systems Command (NSWCCD Code 102) intends to procure one replacement AAON packaged rooftop heat pump unit for Building 81 on a brand-name basis, with a pre-solicitation notice response due July 7, 2026. The requirement specifies an AAON Model RNA-025 unit to replace existing equipment (Serial # BNWR03515).

The unit must feature 2-inch double-wall construction with thermal break, direct drive plenum supply fans, stainless steel double-sloped drain pan, and one set of 4-inch pleated MERV 8 filters with condenser coil guards. Electrical specifications require 460V/3Ph/60Hz power with a Minimum Circuit Ampacity of 216A and Maximum Overcurrent Protection of 225A. The unit shall operate on R-454B refrigerant with a variable capacity primary compressor and 2-step secondary compressor. Performance features include air-source heat pump with modulating hot gas reheat, VCCX CAV controller, economizer, clogged filter switch, phase and brownout protection, non-fused disconnect switch, factory-wired 115V convenience outlet, and remote safety terminals for field-provided smoke detectors.

Contractor responsibilities are limited to equipment supply inclusive of all freight. The contractor must provide a minimum 1-year limited parts and labor warranty and 5-year parts-only warranty for the compressor. Excluded items include BAS integration, smoke detectors, airflow monitoring, vibration isolation rails, mounting hardware, structural steel, wiring, rigging, installation, and final commissioning.

Place of performance is Building 81. NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) and PSC 4120 (Air Conditioning Equipment) apply.

Aaon HVAC unit

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