Which is better, top air supply or ground air supply of central fresh air system?

I plan to install a fresh air system. When I went to the market to buy it, I found that the fresh air system also has two types: offset air supply and top air supply. Because I don't know much about it, I don't know how to choose. After consulting professional experts, I will find out the advantages and disadvantages of two different air supply systems and share them with you here.

Let's learn about ground gas supply first.

The air supply mode is that the air supply outlet is installed at the bottom of the floor and the air return outlet is installed at the top of the ceiling. When the equipment is running, fresh air will come out from the ground, and dirty indoor air will be discharged from the air return outlet at the top.

What are the advantages:

(1) can circulate without wasting fresh air;

② The ventilation effect and efficiency are better than traditional mixed ventilation;

(3) No suspended ceiling is needed, just add a mat with a height of 30mm on the ground for installation;

(4) Underground air supply adopts concealed pipe mode, and its pipeline direction is more flexible and convenient;

⑤ Because its air outlet is on the ground, it is much more convenient to clean up.

What are the disadvantages:

(1) has high requirements for host equipment and complicated construction;

(2) As the ground needs to be raised, the space height will be reduced to some extent.

Let's talk about top air supply again

Top air supply is a common mode. Different from ground air supply, the air supply outlet and air return outlet of top air supply are installed in the ceiling, and the circulation and replacement of indoor air are completed by these two outlets.

Because the top air supply has low requirements for the fresh air main unit, it has certain advantages in construction difficulty and cost, which is also the biggest advantage of top air supply.

Its disadvantages are as follows:

(1) The air supply outlet and the air return outlet are in the ceiling, which have certain requirements for the height of the floor, and it is more troublesome to clean;

(2) When laying pipelines, it is necessary to wear beams and walls, which is easy to cross;

(3) The upper floor will be replaced by air, and the ventilation effect is worse than that of ground air supply;

Which one do you choose? Judging from the above contents, it is still necessary to decide according to which type of apartment, decoration budget and functional focus is suitable! In terms of advantages, the advantages of ground air supply are more obvious than those of top air supply.

This answer comes from the design of Wuhu Honghu good users. For more decoration strategies and home experience, welcome to visit the Good Life APP.