Keio Plaza Hotel
A building-scale decision,
proven room by room.
- Property scale
- 1,435 roomsReported hotel room count
- Validation
- Four rooms / one year
- Infrastructure
- Existing two-pipe system
Guest comfort couldn’t wait
for seasonal changeover.
The hotel reported up to 20 daily temperature requests during changeover periods. Its two-pipe system could deliver heating or cooling, but not both at once.
Prove the room.
Then scale the solution.
PAFMAC added independent room heating and cooling while retaining existing piping. Four guestrooms were tested for a year before the first rollout in 2009.
Main-tower installation began alongside guestroom renovations.
All 455 south-tower rooms were completed across three installation years.
Main-tower completion was planned for later that year.
A better response
to room-by-room needs.
The hotel reported that temperature requests stopped in upgraded rooms, with electricity use below its initial expectations.
Project record: Nippon PMAC · Keio Plaza Hotel . Published January 11, 2019. Room counts describe the property at that time; the report does not confirm the planned final completion. Photograph: Nippon PMAC project materials.