They each have their own advantages, and here are some of their advantages:

1. Duct exhaust fan

The duct exhaust fan mainly changes the shape of the blade and produces axial flow and centrifugal effect at the same time, and the exhaust effect is obvious. It can circulate and exhaust, and the indoor and outdoor air can be circulated.

The noise of the duct exhaust fan is slightly louder.

The volume of the duct exhaust fan is small, it does not take up too much space, and the installation steps are convenient, the operation is simple, the air pressure and air volume provided are moderate, and the operating efficiency is high, so it is favored by the market.

2. Exhaust fan

The exhaust fan can only exhaust air locally and cannot enter the air, and the indoor and outdoor air cannot be circulated.

The noise of the exhaust fan is small. Areas that require noise are suitable for installing exhaust fans.

The exhaust fan operates in one direction and can only discharge indoor air. In addition, the length of the pipe during operation weakens the exhausted strength.