An marine HVAC inspection is a structured check-up of the system to ensure it’s safe, efficient, and ready for service. Think of it as a “health check” for the yacht’s climate control.
Here’s what it usually entails:
1. Visual & Operational Assessment
Check system startup, operation, and shutdown cycles.
Listen for unusual noises (rattles, grinding, humming).
Check airflow strength at each vent.
Verify thermostat/control panel settings and calibration.
2. Air Handling Side
Inspect and clean or replace air filters.
Check evaporator coils for dust, salt deposits, and corrosion.
Inspect blower fans for dirt buildup or imbalance.
Check ductwork for leaks, loose connections, mold, or moisture.
Confirm return air paths are unobstructed.
3. Refrigeration Circuit
Measure refrigerant pressures and temperature differential.
Check refrigerant charge and look for signs of leaks.
Inspect condenser coils (often seawater-cooled on yachts) for scaling or corrosion.
Verify proper operation of expansion valves.
4. Seawater Cooling System (Marine-specific)
Inspect strainers for debris, barnacles, or algae.
Check raw water pumps for leaks, impeller wear, and proper flow.
Inspect hoses, clamps, and through-hulls for corrosion or deterioration.
Test for mineral scaling and marine growth in piping.
5. Electrical System
Tighten all electrical connections.
Inspect wiring insulation for heat damage or corrosion.
Test contactors, capacitors, relays, and circuit boards.
Check amperage draw against manufacturer specs.
6. Heating Components
Test heating mode (heat pump, electric coil, or hydronic heater).
Inspect heating elements for corrosion or burnout.
Check for leaks in diesel/hydronic heating lines.
7. Safety Checks
Verify the system shuts down on overheat or low water flow.
Ensure condensate drains are clear to prevent flooding or mold.
Check for refrigerant handling compliance.
Inspect sacrificial anodes (if fitted) in seawater system.
✅ Result:
The technician provides a report listing the system’s current condition, any issues found, efficiency readings, and recommended repairs or preventive actions.
