What is the standard of healthy housing?

According to the regulations of the World Health Organization, the minimum requirements for a "healthy home" are:

1. With good ventilation equipment, indoor pollutants can be discharged to the outside, especially for houses with high air tightness and high thermal insulation, central ventilation system with air duct must be used for regular ventilation.

2. In the kitchen stove or smoking place, local exhaust equipment should be set up. 3. Living room, bedroom, kitchen, bathroom, corridor, bathroom, etc. It should be kept at 17℃ to 27℃ all the year round.

4. The concentration of chemicals causing allergy is very low.

5. In order to meet the requirements of the first point, try to avoid using plywood and wall decoration materials that are easy to emit chemicals.

6. Indoor humidity should be kept between 40% and 70% all year round.

7. The concentration of suspended dust should be lower than 0. 1.5mg/m2.

8. The concentration of carbon dioxide should be lower than 1000PPM.

9. The noise level should be lower than 50 dB (A).

10. Make sure that the lighting time exceeds 3 hours.

1 1. Lighting equipment with sufficient brightness shall be provided.

12. The residence has sufficient ability to resist natural disasters.

13. There is enough per capita building area to ensure privacy.

14. The residence should be convenient for taking care of the elderly and the disabled.

15. Because the building materials contain harmful volatile organic compounds, it will take some time (at least half a month) for people to live in after the house is completed. During this period, ventilation should be carried out.