ERV (Energy Recovery Ventilation System) can not only recover air energy to reduce energy consumption, but also regulate humidity and improve indoor air quality. It is particularly suitable 

for the long and cold winters in Alaska, the strong airtightness of most buildings, and the high humidity or easily polluted air in some areas. The state has suitable scenarios ranging from concentrated 

residential areas to special functional zones, as follows:

1. Concentrated areas of various enclosed residences

The central and southern urban areas: Cities like Anchorage and Fairbanks in the central and southern regions are densely populated areas in Alaska. These areas mostly have a subarctic climate, 

with long and cold winters and buildings that are sealed very tightly for insulation. Long-term sealing can lead to turbid indoor air, accumulation of pollutants such as cooking fumes and pet dander, 

and is also prone to mold growth. ERV can recover heat and humidity when replacing fresh air with stale air, preventing the indoor air from being too dry. It not only ensures fresh air but also reduces 

heating energy consumption, making it an excellent choice for local residences.

Small settlements in the Far North: Areas such as Cape Barrow within the Arctic Circle have a polar climate. In winter, there is a polar night phenomenon. Buildings cannot be ventilated by opening 

Windows for a long time, and the low outdoor temperature makes the demand for heating extremely high. ERV can efficiently recover the heat from indoor exhaust air to preheat outdoor fresh air, 

significantly reducing the energy consumption of the heating system. At the same time, it solves the problem of air stale in confined Spaces, making it suitable for a small number of local residential 

buildings and residences for scientific researchers.

2. Concentrated areas of commercial and public buildings

The southeastern port and tourism-related construction: Juneau, Kechikan and other southeastern regions have a mid-latitude maritime climate, which is warm, humid and has a large amount of precipitation. 

They are popular tourist areas in Alaska. Local hotels, restaurants, tourist centers and other buildings need to be insulated in winter and protected from moisture in summer. Moreover, the large flow of 

people makes the indoor air prone to pollution. ERV can regulate humidity to prevent condensation and mold inside buildings, while continuously replacing air to enhance the comfort of both visitors and staff.

Schools and hospitals across the state: In most areas of Alaska, the air is prone to pollution from wood-burning smoke, forest fire dust, etc., and the air quality throughout the state is poor. 

In densely populated places with high air quality requirements such as school classrooms and hospital wards, ERV can filter out some pollutants when introducing fresh air and reduce constant temperature 

energy consumption through energy recovery. It is suitable for school and hospital buildings throughout the state.

3. Industrial and special functional facilities areas

Industrial and port facilities in the southwest region: The Dutch Port of Unalasca is a well-known fishing port, and in recent years, many commercial facilities and power plants have been newly built. 

These industrial facilities and the processing plants, warehouses and other facilities that are part of the fishing port not only need continuous ventilation to ensure air circulation, but in some places, 

the indoor temperature and humidity also need to be stabilized to protect the equipment or goods. ERV can meet the ventilation requirements while reducing the energy consumption of the 

factory's constant temperature system, and is suitable for such industrial and port ancillary facilities.

Small factories and machine rooms in inland areas: In the inland areas of Alaska, thunderstorms occur frequently in summer, which can easily cause forest fires. The smoke can affect the indoor air 

quality, and some small wood processing plants and equipment machine rooms in the local area need to operate in a closed manner for a long time. ERV can not only replace fresh air in these places, 

preventing smoke and dust from entering the rooms and damaging equipment or affecting workers' health, but also control energy consumption through energy recovery, making it suitable for 

related small-scale industrial facilities.