Introduction to Japanese HEAS-02-2022 Guidelines for hospital facility design (compilation of air conditioning equipment)

The Japanese HEAS-02Guidelinesforhospitalfacilitydesign(compilationofairconditioningequipment) has been continuously applied for more than 30 years and has a significant impact on hospital construction in China. After four revisions, the latest 2022 edition is revised under the leadership of the medical chairman during the epidemic, and proposes appropriate measures in view of the new transmission characteristics of aerosols.There are many new ideas and measures in the field of medical environment control, with partial revisions to air cleanliness levels and ventilation requirements for various medical departments. Based on the infection management risk assessment, recommendation strength and evidence quality, the reasonable medical environment control is implemented, and some concerns are clarified.