Bid guide

How to bid on B1130 Annex HVAC System Repair for the DEPT of Defense

DEPT of DefenseCloses September 18, 2026

What the agency is buying

The Department of Defense is seeking a contractor to remove existing energy recovery ventilation units and install two new dedicated outdoor air systems in Building 1130 Annex at Shaw Air Force Base, South Carolina. The project is estimated to cost between $500,000 and $1,000,000 and must be completed within 115 calendar days.

This is a valuable opportunity for small businesses in the HVAC and construction sectors to secure a significant government contract.

Key dates and deadlines

The solicitation was published on August 7, 2026. A mandatory site visit for prime contractors is scheduled for Friday, August 14, 2026, at 8:00 AM EDT. You must submit Base Pass Request Forms by Tuesday, August 11, 2026, at 2:00 PM EDT to attend.

Bids are due by Friday, September 18, 2026, at 1:00 PM EDT. The bid opening is on Monday, September 21, 2026, at 9:00 AM EDT.

Who this opportunity suits

This opportunity is a 100% small business set-aside under NAICS code 238220, which covers plumbing, heating, and air-conditioning contractors. It is suitable for small businesses with experience in HVAC system demolition and installation, particularly those familiar with government contracting requirements and working on military installations.

Prime contractors must attend the mandatory site visit to be considered for award.

How to respond

To access the full solicitation details, click “View original source” on the portal. If the first click takes you to the portal’s homepage, click it again to go directly to the bid. You may need a free account to view all documents, though this is not always required.

Remember to submit your Base Pass Request Forms by August 11, 2026, at 2:00 PM EDT to the provided email addresses if you plan to attend the mandatory site visit on August 14, 2026.

Tips for a competitive response

Given the mandatory site visit, ensure your team understands the specific conditions and requirements of Building 1130 Annex. Pay close attention to the Statement of Work to ensure your proposal directly addresses all aspects of the demolition and installation.

Clearly demonstrate your firm's experience with similar HVAC projects, especially those involving the removal of existing systems and installation of new dedicated outdoor air systems. Highlight your ability to complete projects within the specified 115-calendar-day performance period. Ensure all required forms and documentation are submitted accurately and on time, particularly the Base Pass Request Forms for the site visit.

See the live bid — deadline, agency details, and how to respond

Dates and requirements can change via addenda; always verify on the bid page and at the original source before responding.

View this bid on BiddingSimple

This guide was prepared by BiddingSimple from the solicitation’s public posting. It is not official guidance from DEPT of Defense; the original posting controls.