Meaningful cost comparisons are done on a like-for-like basis, as the CCS system and operations, which use chilled water cooled by centralised chillers outside homes, differ from conventional air-conditioning systems.

 

Savings are projected in terms of CCS life cycle cost savings. CCS life cycle costs are calculated based on costs for hardware, equipment replacement and maintenance, and monthly CCS usage, over a 7-year period. The projected CCS life cycle cost savings are computed in comparison with a conventional split unit air-conditioning system.

 

At the current monthly CCS usage rate of 10 cents/kWrh, customers will be able to enjoy life cycle savings of up to 30 per cent compared to a conventional split unit air-conditioning system, over a 7-year period.