A referral is only as useful as its specificity. Aluminum branch wiring is not repaired by tightening connections — that is the intuitive response and it is actively counterproductive, because aluminum creeps under pressure and a retightened connection loosens again. The recognized remediation methods are particular: connecting a short copper pigtail using a listed connector rated for the aluminum-to-copper transition, or complete replacement of the branch circuits. Both require an electrician who knows which connectors are listed for the purpose and how to install them correctly, since using an unlisted twist-on connector is a common and dangerous shortcut. Naming that experience in the referral is what turns a generic recommendation into one the client can act on without re-creating the hazard.