Overview

The 'Energy Consumption by End Use' section of a Compliance Report can be a useful tool in pinpointing the reasons for a poor energy rating. While Heating, Cooling, Lighting and Hot Water categories are largely self-explanatory, Auxiliary Energy can appear slightly ambiguous.

Method

Controls, pumps and fans throughout the building will determine the Auxiliary Energy result. It is dependant on numerous factors, including:

• Type of HVAC system
• Specific Fan Power
• Variable speed pump selection
• Ductwork leakage classification
• AHU leakage classification
• Room Type (in particular hours of operation as set by NCM Activity database)

The 2013 NCM modelling guide should be of assistance in explaining the full calculation method, if required.