Recommended series/models: HRC series, HR 400 Plus, HR 350 AVEL
 
Founded in 1954, Witqi is a well-known ventilation equipment manufacturer from Italy, producing more than 400 kinds of ventilation and heating products every year, and has set up the largest ventilation laboratory in Europe.
 
As a foreign ventilation brand, Witqi obviously focuses on ventilation rather than filtration, even if it is positioned in the Volkswagen HRC series, Witki still uses a high-performance motor, with outstanding air duct design, the lowest air volume model HRC150, the maximum static pressure can reach 275Pa, and the large air volume model HRC350 is up to 441Pa, strong fresh air conveying capacity, coping with duplex housing and other large apartment space more easily.
 
It must be pointed out that consumers in many areas of China still have rigid requirements for the haze removal ability of the fresh air system, in order not to bring too much wind resistance to the fresh air host, the highest filter level of Witqi is only F7 level of medium effect filtration, and the PM2.5 filtration rate is generally only 60%, it is recommended that consumers who buy Witqi products should try to buy another filter box.
 
As for the energy exchanger, the advantages of Witqi are not obvious, its products do not clearly indicate the type of energy exchanger, the specific performance parameters are not transparent, only with a relatively vague "heat exchange rate up to 81%" to explain its specific performance, in fact, for the full heat exchanger, the more meaningful indicator is the enthalpy exchange rate, including heating and refrigeration, it is recommended that consumers should fully consult the business before purchasing.
 
Although Witqi has opened an official flagship store on the e-commerce platform, the main products sold are the accessories of the central fresh air system, which is a systematic project involving design, installation and other links, and consumers should fully communicate with the merchant in advance.