According to the comprehensive analysis of search results, the following regions and scenarios in Australia are particularly suitable for the application of energy recovery ventilators (ERV):

1. Southeast coastal cities (Sydney, Melbourne, Brisbane, etc.) ‌

High population density, high building density, and significant demand for indoor air quality and energy efficiency.

The hot and humid summer and cold and humid winter climate characteristics make ERV outstanding in temperature and humidity regulation, which can effectively reduce air 

conditioning energy consumption.

The region has a high penetration rate of rooftop solar energy and large fluctuations in power supply (such as negative electricity prices). The low energy consumption characteristics of

 ERV can complement renewable energy.

2. Victoria (especially Melbourne and surrounding emerging energy areas) ‌

The government actively promotes energy transformation (such as the construction of the Golden Plains wind farm project), and policies support the application of clean technologies.

The state energy department (DEECA) explicitly encourages energy-saving renovation of buildings, and ERV meets its energy efficiency improvement goals.

3. Arid inland areas (such as South Australia and parts of Western Australia) ‌

The climate is dry, and ERV can recycle moisture in the air during ventilation, reduce humidification needs, and maintain indoor humidity balance.

The temperature difference between day and night is large, and the heat recovery function of ERV can buffer the impact of temperature fluctuations on buildings.

4. Industrial and commercial concentrated areas (Perth, Adelaide, etc.) ‌

Industrial buildings (such as manufacturing plants, data centers) have large ventilation requirements and high energy consumption, and ERV can significantly reduce operating costs.

Commercial buildings must meet green certification requirements (such as NABERS, Green Star), and ERV is an effective solution to improve energy efficiency ratings.

Notes ‌

Maintenance cost ‌: Centralized ERVs require professional team maintenance, and unitized systems require tenants to participate in filter replacement.

Policy adaptation ‌: It is necessary to refer to the building regulations of each state (such as Victoria's "Renewable Energy Zone Plan") for design.

In summary, the densely populated areas in southeastern Australia, the policy-supported areas of Victoria, and the arid inland are the areas with the highest priority for ERV application. 

It is recommended to select a system solution based on building type and maintenance capabilities.