Is the heat exchanger in need of cleaning? How to recognise it, with expert Piero Ragazzi

Among the technical checks that reveal much about a boat's maintenance status is the inspection of the heat exchanger. A component of the engine's cooling system that, if neglected, can lead to serious problems for the vessel. In the video "Is the HEAT EXCHANGER in need of cleaning?", created in collaboration with expert Piero Ragazzi, Abayachting demonstrates how to recognise the condition of this engine component.

The heat exchanger is part of the boat's engine cooling system. Its role is to transfer heat from the engine's internal circuit to the seawater, keeping the temperature of the propulsion unit within the correct values. It is an essential component for the proper functioning and longevity of the boat's engine.

Over time, the heat exchanger can accumulate deposits, scale, and residues that reduce its efficiency. A dirty exchanger compromises the engine's cooling, risking overheating and failures. This is why checking this component is an integral part of the survey of a used boat and the proper maintenance of the marine engine.

During the technical inspection of the vessel, the expert checks the condition of the exchanger by observing the presence of deposits, the circulation of the cooling water, and the operating temperature of the boat's engine. Signs such as abnormal overheating or reductions in water flow may indicate the need for cleaning or maintenance of the exchanger.

In the sale of used boats, the condition of the engine and its components — including the exchanger — directly affects the value of the vessel and the buyer's confidence. Presenting a well-maintained engine is an advantage for the seller; checking its condition is a safeguard for those looking to buy the boat.

Technical checks like that of the exchanger require the expert eye of a marine surveyor. Relying on qualified professionals, as Abayachting does in its surveys, allows for an accurate assessment of the boat's engine condition and helps avoid costly surprises after the purchase.

A seemingly small check like that of the heat exchanger can say a lot about the health of a boat's engine. Watch the full video from Abayachting with expert Piero Ragazzi to discover how to recognise a heat exchanger that needs cleaning during the vessel's survey.