Presolicitation Notice: Invitation for Bids (IFB) opportunity - 100% Small Business Set Aside NAICS Code: 238220 - Plumbing, Heating, and Air-Conditioning Contractors. The Ohio Air National Guard intends to issue an Invitation for Bids to award a single firm fixed-price contract for services, non-personal, to provide all plant, labor, transportation, materials, tools, equipment, appliances and supervision necessary for B150 HVAC Repair Project. Description: The 178th Civil Engineer Squadron, located at Springfield-Beckley Air National Guard Base, Ohio, has a requirement that entails the complete demolition and replacement of the failing cooling infrastructure. The contractor will install three (3) new, right-sized Computer Room Air Conditioning (CRAC) units, along with all necessary accessories, to ensure adequate cooling capacity for both current operations and planned mission growth. The facility will require familiarity and compliance with ICD 705. In accordance with National Guard Bureau (NGB) policy (Rescission of Class Waiver for Non-Commercial Construction, dated 27 April 2026), this requirement is categorized as a Commercial Construction Procurement, but will be solicited and awarded utilizing construction procedures and clauses under RFO/FAR Part 14 (Sealed Bidding). The resulting contract will be a Firm-Fixed-Price (FFP) lump-sum contract awarded to the lowest responsive and responsible bidder. This acquisition is subject to the Buy American Act. All supplies and construction materials must comply with the domestic sourcing restrictions and requirements outlined in RFO/FAR Part 25. The official plans and specifications will not be furnished with this presolicitation notice. The formal Invitation for Bid (IFB) and all associated technical data will be made available on or about the Response Date listed in this SAM.gov notice and will be available for download only from the Contract Opportunities page at SAM.gov and/or the PIEE Solicitation Module. Hard copies will not be provided. The solicitation and associated information will be available only from the Contract Opportunities page at SAM.gov. All/some documents for this project will be “restricted”. Bidders will have to register and complete a form (DD2345) that requires processing to allow them to get access to secure postings. This process is detailed in the SAM.gov Contract Opportunities Vender Guide and takes about 7 to 15 business days. Interested offerors are highly encouraged to verify their status or apply immediately to avoid delays in accessing the IFB. Definitization of equitable adjustments: In accordance with RFO/ FAR 36.101-4 and NGB Compliance Alert FY23-001, the following information is provided: (1) The National Guard has no agency-specific policies or procedures applicable to the definitization of equitable adjustments for change orders under construction contracts other than those described at RFO/FAR 43.204, DFARS 243.204, and AFARS 5143.204. (2) Data f…