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Tokyo Metro revealed that the air conditioning at Kasumigaseki Station has been halted since late July. Additionally, the Doutor Coffee Shop located inside the ticket gates has temporarily closed. The restoration of the air conditioning is planned for late August.
According to Tokyo Metro, the air conditioning interruption is due to equipment failure by the district heating and cooling (DHC) provider. Marunouchi Heat Supply, a Mitsubishi Estate Group company, provides district heating and cooling services at Kasumigaseki Station. District heating and cooling is a system where facilities are supplied with thermal media like chilled water, hot water, or steam, generated at a regional plant, through conduits, allowing for air conditioning and other uses at facilities including stations.
The “Doutor Coffee Shop Kasumigaseki Metropia Branch” inside the ticket gates has temporarily closed from July 22 due to this issue. The store outside the ticket gates remains open.