District cooling ETS rooms: getting to first-time approval

The energy transfer station is where the building meets the network. Most rejected inspections come down to four things.

An energy transfer station (ETS) separates the district cooling network from the building’s own chilled water system. The provider owns the primary side; the building owns the secondary side; the plate heat exchangers sit between them. Because the provider inspects before it connects, the ETS room is often on the critical path to handover.

Four causes of rejected inspections

• Pipework not flushed and chemically treated to the provider’s procedure before connection.
• Energy meter and temperature sensors installed in positions the provider does not accept.
• Access for maintenance blocked by other services, especially around the heat exchangers.
• Low temperature difference across the building, which the provider can see in its data from the first day.

How we plan it

We coordinate the ETS room in the model before the slab is poured, agree meter and sensor positions with the provider early, and treat flushing as a planned activity with its own records rather than a last-minute task. The aim is simple: one inspection, one connection.