Photo: Reddot Wire newsroom (illustrative demo image)
Tengah’s district cooling is meant to cut bills. Early residents say the savings are real but smaller than promised
Singapore’s first “forest town” pipes chilled water to flats instead of letting each home run its own compressor. Eighteen months in, residents tell Reddot Wire the system works — but the marketing ran ahead of the maths.
When the first families collected their keys in Tengah, the pitch was simple: no more whirring condenser on the ledge, no more topping up gas, just cool air delivered like water from a tap. The town’s centralised cooling plant chills water and pumps it to each block, where a small unit in the flat blows the cold air through. On paper it is more efficient than tens of thousands of households each running their own aircon.
In practice, residents we spoke to describe a more mixed picture. Several said their monthly cooling charge is lower than the equivalent split-unit bill they paid in their old flat, but only by a margin they did not expect to have to defend to sceptical relatives. Others, who keep the air on through the night, found the convenience fee and the cooling tariff added up faster than the brochure suggested. Almost everyone praised the quiet and the freed-up ledge space.
The agency behind the scheme says billing tracks actual usage and that the system delivers clear energy savings at town scale even where an individual household sees only a modest difference. Independent energy researchers we contacted broadly agree on the efficiency, while cautioning that headline savings figures are sensitive to how heavily a home cools and to the cost of the chilled water itself. For a town being held up as a template, that nuance matters — and residents would rather have had it upfront.
