Recommended series/models: ERV series, HRV series
 
Brown company was formerly known as the domestic agent of Braun in the United States, and later independently engaged in the research and development, design, sales and other work of fresh air system, Brown claims to use European and American fresh air system technology, focusing on the improvement of indoor air quality, its products have won the German iF Design Award, and has become the Shanghai World Expo United Nations Pavilion fresh air system supplier and Vanke fresh air designated supplier.
 
Interestingly, ERV and HRV are just the English abbreviation of full heat exchanger and sensible heat exchanger, the two series provide 150-400m³/h fresh air volume optional, standard F6 medium efficiency H13 high-efficiency HEPA pure physical filtration system, this configuration is obviously more suitable for China's air environment, but also caters to the needs of consumers for fresh air system haze removal. The static pressure performance of the Brown fresh air fan is very good, and the maximum static pressure of the 150m³/h model can reach 268Pa, which is second only to the high static pressure model of Witqi, which can transport fresh air farther.
 
In order to adapt to cold areas, the Brown fresh air system is equipped with an automatic anti-frost function, and the official website says that it can still work normally below minus 25 °C, but it needs to be reminded that the sensible heat exchanger type, that is, the HRV series, does not have this function.
 
Although Brown has been criticized by industry insiders for many years for its relationship with Braun of the United States, aside from commercial disputes, Brown was once an agent of Braun after all, and has accumulated a lot of experience in both installation services and channels, and the comprehensive performance of the products is also at a medium level.