This is a request for Expressions of Interest to replace an Air Handling Unit at the TAN-677 facility at the Idaho National Laboratory. The work involves removing an old HVAC system and installing a new one with integration and testing. Performance of the services is specified for the Idaho National Laboratory site, where the Davis-Bacon Act applies to construction work. The budget is not specified, but the Davis-Bacon Act applies to contracts over $2,000. Selected vendors from this process may be invited to participate in a future Request for Proposal.