There are currently four categories of popular indoor ventilation systems: wall-mounted fresh air systems, two-way flow fresh air systems, ordinary negative pressure fresh air systems, and Brown fresh air systems.
What are the differences between them? , Wall-mounted fresh air system:
Advantages: 1. No design required, simple selection; 2. Small size, easy to install.
2. Two-way flow fresh air system:
Advantages: 1. Both inlet and exhaust air are powered, the ventilation path is scientific and reasonable, and the air replacement effect is good; 2. Two-way flow with heat exchange function The fresh air system can reduce indoor heat loss.
Disadvantages: 1. It can only be installed during decoration and requires ceiling decoration.
3. Ordinary negative pressure fresh air system:
Advantages: 1. Air intake No power, mechanical exhaust, avoiding secondary pollution from ducted air supply; 2. Only the exhaust is powered, which greatly saves electrical energy; 3. The air inlet is equipped with a primary filter device, which is easy to replace.
4. Brown fresh air system:
Advantages: 1. Pipeless design, only a few pipes are concentrated in the bathroom, no ceiling required, can be installed before and after decoration;, Swedish patented filtration technology, The filtration effect on PM2.5 reaches 81.3% (test result of China Centers for Disease Control and Prevention);
Disadvantages: Depending on the degree of outdoor air pollution, the filter device needs to be replaced regularly (replacement is simple and convenient, no professionals are required).