They are not the same thing, but there are some differences.
1. Exhaust fan
1. The exhaust fan can only partially exhaust air, but cannot intake air, and indoor and outdoor air cannot circulate.
2. The exhaust fan makes a lot of noise. It is impossible to install an exhaust fan in the bedroom (especially the nursery room and the elderly room).
3. The exhaust fan operates in one direction and can only discharge indoor air. In addition, the length of the pipe weakens the exhaust force during operation. Therefore, it is only suitable for installation in living rooms with good air circulation, and is not suitable for Installed in kitchens, bathrooms and other places.
2. Ventilation fan
1. The motor of the ventilation fan has two directions. It has the function of an exhaust fan and can also be operated to blow fresh air into the room.
2. There are three types of ventilation fans: ceiling-mounted ventilation fans, wall-mounted ventilation fans and window-mounted ventilation fans. The length of the ceiling-mounted ventilation fan during operation weakens the strength of extracting indoor air. In addition, it can only extract indoor air but cannot replenish fresh outdoor air. Therefore, there is a lot of oil fume in kitchens and other places, and the air quality is poor. The disadvantage is that it is not suitable to use ceiling-mounted ventilation fans. Wall-mounted ventilation fans are suitable for smaller rooms such as bathrooms and enclosed balconies.
Panasonic Exhaust Ventilation Fan 1. First of all, the exhaust fan can only achieve local and short-term exhaust. There is no organized and reasonable pressure field and air flow path, so it cannot achieve true air replacement. The fresh air system rationally organizes the indoor air flow through the air supply vents and exhaust vents, allowing the indoor air to flow in an orderly manner for a long time. The air including the indoor dead corners can also circulate, thereby achieving the purpose of air replacement and operating 24 hours a day. 2. The exhaust fan is very noisy. Because the exhaust fan motor has a large power and a large air volume, it will produce a lot of noise in a short time. If it is turned on for a long time, it will cause environmental noise pollution. However, the main unit of the fresh air system has a reasonable air volume, low noise, and is enclosed in the ceiling space, blocking the transmission of noise and not affecting people. It can also be turned to the minimum setting when sleeping at night to achieve 24-hour ventilation. 3. The exhaust fan can only extract the air from the room. If this happens for a long time, a negative pressure will form in the room, and the room will be deprived of oxygen, making people feel uncomfortable when they stay there. The fresh air system can remove dirty air. At the same time, fresh outdoor air is brought in, and the incoming air is filtered and purified, so that breathing will be easier.