How to bid on HVAC System Upgrade at Lower Monumental PH for DEPT of Defense

What the agency is buying and why it matters

The Department of Defense needs a contractor to upgrade the HVAC system at the Lower Monumental Dam Powerhouse in Kahlotus, Washington. This project involves modernizing the system to use river water for heating and cooling, improving ventilation, and ensuring efficient building pressurization. The goal is to reduce smoke and dust, prolong equipment life, and enhance air quality for occupants.

The upgrade also includes a new electronic control system for easier operation from the control room and permanent access platforms for maintenance. This is a firm-fixed price construction contract, and it is open to both large and small businesses.

Key dates and what happens at the deadline

This solicitation was published on August 21, 2026. All proposals must be submitted by September 22, 2026, at 5:00 PM ET. Proposals should be sent by email to [email protected].

The government reserves the right to cancel the solicitation before or after the closing date. No reimbursement will be made for costs associated with preparing your proposal.

Who this opportunity suits

This opportunity is suitable for plumbing, heating, and air-conditioning contractors. The North American Industry Classification System (NAICS) code is 238220, with a small business size standard of $19,000,000. It is an unrestricted procurement, meaning both large and small businesses can compete.

Large businesses will need to provide a small business subcontracting plan. All offerors must be registered in SAM.gov to be eligible for an award.

How to respond to this solicitation

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

Once you have reviewed the solicitation documents, prepare your proposal according to the requirements. Submit your complete proposal by email to [email protected] before the deadline.

Practical tips for a competitive response

This is a Lowest Price Technically Acceptable (LPTA) RFP, so ensure your proposal meets all technical requirements at the most competitive price. Pay close attention to the scope of work, including river-water heating and cooling, ventilation, building pressurization, modern controls, and permanent maintenance access platforms.

You will be responsible for establishing and managing a Contractor Quality Control (CQC) System. A CQC System Manager, employed by the prime contractor, must be on-site for each shift. This manager needs a minimum of 5 years of relevant supervisory or management experience in construction quality and must have completed the "Construction Quality Management for Contractors" course within the last 5 years.

Remember that 100% performance and payment bonds are required for this project. Ensure your company is registered in SAM.gov before submitting your proposal, as this is mandatory for receiving an award.