How good is a ventilation fan? Which type is appropriate to use?

Ventilation or exhaust fan Most of the time, we use it to ventilate unwanted odors and help the air within the room circulate better. It also helps to dissipate heat and allows the air to circulate more easily. Which if divided according to use, can be divided into 4 types, namely wall-mounted, glass-mounted, ceiling-mounted, without ventilation pipe connections. and pipe connection type embedded in the ceiling 

1. How to buy
Choosing the right ventilation fan is primarily based on its ability to ventilate air. which is usually expressed in units of cubic meter/hour (CMH) or cubic foot/minute (CFM) if you want to know Is there enough ventilation? Can be calculated as follows  
Airflow CMH (m³/hour) = room volume (m³) × 10. Airflow CFM (ft³/minute) = room volume (m³) × 35.28 × 10 / 60, or room volume (ft³) × 10 / 60.  

For example, a bathroom measuring 3 × 2 metres with a height of 2.5 metres has a volume of 15 m³ and needs ventilation of at least 88.2 CFM or 150 CMH. Selecting the appropriate airflow also improves odour removal.

2. Installation method
First determine the installation point by considering airflow direction in the room. Install in line with incoming air or in a location needing greater ventilation, approximately 1.80–2.40 metres above the floor. If air can be exhausted directly through that wall, use a wall- or glass-mounted unit. Otherwise use a ceiling-mounted unit that exhausts upward.

3. Cleaning method
Clean regularly to maintain full performance. Turn the blade cap clockwise and remove the blade, then remove the outer cover. Undo the screws securing the base and pull it from the inner cover. Wash the blade and base with dishwashing liquid or detergent, allow them to dry, and reassemble them as before.  

The information above should help answer common questions about ventilation fans and support choosing a suitable fan for the space in your home.