Is the fresh air system charged by square meters? How much is it per square meter?

The fresh air system does not charge per square meter, which depends on the price of bare metal and auxiliary materials, but the size of the area affects the price of the whole fresh air system to some extent. This is because the larger the area:

First, the amount of fresh air needed is large. In general, the greater the fresh air volume, the more expensive the new fan is.

Second, the larger the area, the more materials are needed. For example, the longer the air duct, the higher the cost.

There are two methods to calculate the fresh air required by houses: one is to calculate the per capita fresh air volume, and the national standard per capita fresh air volume is 30m? /h, if the building area is 100 square meter and there are five people in the family, then the fresh air volume required by the whole house is 5*30m? /h= 150m？ /h； Second, according to the number of air changes, the number of air changes is closely related to the area and floor height. The calculation formula is area * floor height * air changes, and the average number of air changes per household is 1 time/hour. If the building area is 100 and the floor height is 3m, then the total fresh air volume is 300m? /h. Compare the two, whichever is the largest.

If you want to calculate in square meters, you can give a reference. If the house is 100 square meter, do you need a fresh air of 300m meters? /h, according to the market price, the whole set is about 8-9 thousand, so it needs 80-90 yuan per square meter.

The ductless fresh air purifier basically has no accessories, only the price of one machine, which cannot be calculated by area.