1/3 of power generated on a cruise ship is consumed by the heating, ventilation and air conditioning (HVAC) system compared to 10% for a cargo vessel. 

Where cruise ships represent a small percentage of the world shipping population, cargo ships are responsible for 90% of the world's intercontinental trade. Improvement in HVAC efficiency aboard cruise vessels is very important for the owners of cruise vessels and HVAC efficiency aboard all vessels is very important to all of the world inhabitants.

The HVAC system is comprised of six components:

  1. Circulation fans
  2. Heater
  3. Cooler
  4. Humidifier
  5. Filtration 
  6. Ducting

Efficiency opportunities exist in each one of these components areas including smart controls to drive the system components to operate in balance and at minimumally required power levels. In addition to core components of the HVAC system much efficiency can be obtained from passive engineering analysis of the vessel environment including fenestration, general arrangement, shell insulation, and shell openings.