Gary Knox, F.AIRAH

Seasonal efficiency ratings

Energy Rating Labels and Minimum Energy Performance Standards have assisted government, industry, and consumers in selecting efficient air conditioners since the early 1990s. 

Recently, a new rating system has been introduced in recognition of how air conditioners are used. This system applies seasonal performance factors to calculate weighted ratings based on three climate zones with hourly temperature data. 

Knox will explore the available partial-load information and how it is applied to determine the seasonal performance factors. He will provide an explanation for residential climate zones and commercial rating calculations. This overview will be helpful to designers and engineers to understand energy efficiency data and ratings.

About Knox

Knox has a background of more than 25 years in the mechanical engineering discipline within building design, manufacturing, controls, commissioning, and facility management of HVAC&R systems. He is an engineering leader – contributing nationally and globally with an understanding of legislation, building codes, and standards of the construction industry. 

Daikin Australia’s Engineering Manager, Knox represents the HVAC&R industry on Standards Australia Committee EL-056 Air Conditioners and Heat Pumps.