If a vessel doesn't have a thru-hull for an AC unit on a new install, what should the technician do?

When installing an air conditioning unit in a vessel that does not have a dedicated thru-hull, the most appropriate action is to have the boat hauled and install a dedicated thru-hull. This is crucial because air conditioning units rely on a consistent supply of seawater for cooling. Using an existing thru-hull for the main engine or generator could result in insufficient water flow for the AC system, leading to overheating and potential damage to the unit.

Installing a dedicated thru-hull ensures that the air conditioning unit will have an adequate and uninterrupted supply of cooling water, which is essential for its efficiency and longevity. Additionally, having separate thru-hulls prevents any interference between systems that could occur if shared, such as reduced cooling capacity or operational issues. Proper installation practices are vital for maintaining the safety and functionality of the vessel's systems, making this option the most suitable choice.