Decide what happens at each stage

Before dusty work: record which units and ducts will remain in place, how they are protected and who may run them during construction. Photograph accessible components and mark existing faults.

After major dust work: inspect filters, grilles, accessible coils, fan sections, drain areas and any duct sections actually included in the proposed scope. Confirm which ceiling openings are still available. Avoid calling a grille wipe a full duct clean.

Before handover: document what was cleaned, what was inaccessible and which defects require repair or a separate test. Agree whether subsequent finishing work will need another inspection.

At Port de la Mer, messages 13761 and 15941 show that dusty renovation work, ceiling access and coordination with another contractor shaped the work plan. That record supports scheduling and access decisions; it is not proof that all proposed cleaning was performed or that air quality improved.

Give the provider a room plan, renovation schedule, equipment list and any dust complaint with dates. Ask for a written scope that distinguishes components to be cleaned, defects to be quoted and areas that remain closed. If the system is also leaking or not cooling, keep those symptoms as separate diagnostic questions rather than assuming cleaning will resolve them.