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A: Yes, the renovated house can advise the customer to install a wall-mounted fan. To install the central air system, it is necessary to modify the decoration.

A: The general restaurant, bedroom, and study are all required. The kitchen and toilet are not recommended. The first is that the ventilation effect is not the same in different places. The frequency of air changes is not the same, but it prevents the bathroom kitchen smell from entering other rooms. If customers request to install, you can do a new exhaust alone.

Answer: Need. Can be cleaned with a vacuum cleaner or hair dryer.

A: The initial effect filter can be cleaned with a vacuum cleaner or a hair dryer. The activated carbon filter is recommended to be replaced every 6 months. The HEPA filter is recommended to be replaced every 3 months (if the air quality in this area is particularly bad, it is recommended to replace it every 2 months).