Aircon servicing in the West region of Singapore

The West region's housing and what it means for aircon servicing

Estate age across the region

The age of a block affects aircon work. In older flats the aircon was often added long after the block was built, and the trunking, drainage and power points vary a lot from flat to flat. In HDB's Clementi town, 66% of units are in blocks completed in 1986 or earlier, and the median block completion year is 1979, according to the HDB Property Information dataset. HDB's Jurong East town is similar at 67%. HDB's Bukit Batok town is split, with 50% of units in blocks from 1986 or earlier and 39% from 1998 or later. HDB's Choa Chu Kang town has 55% of units in blocks from 1987 to 1997, and HDB's Bukit Panjang town has 48% in that band. HDB's Jurong West town is spread out: 31%, 27% and 41% across the three age bands. HDB's Tengah town is new. All 16,318 of its units are in blocks from 1998 or later, and its tallest block has 16 storeys. Height matters too. HDB's Clementi town has 29 blocks of 30 storeys or more, but HDB's Jurong West town has none. If you live on a high floor, ask the company how its technician will reach the outdoor unit safely.

If your flat is older, ask whether its electrical supply can take a new system. Under HDB renovation rules, a flat without higher electrical loading needs an HDB permit before new 15A power points can be installed for aircon. Aircon installation must be done by a BCA trained installer, and electrical work by an EMA licensed electrical worker. The Home Improvement Programme covers flats built up to 1986 and, since 2018, flats built from 1987 to 1997. Upgrading the electrical supply is one of its essential improvements. A precinct is upgraded only if at least 75% of eligible Singapore citizen households vote yes, so check your own block's status and do not assume it will be upgraded. The works take about 10 working days in each flat, so plan any new installation around them.

Private homes in the region

Census figures are counted by planning area, and planning areas do not match HDB town borders. In the Census of Population 2020, the Clementi planning area had 18% of resident households in condos and apartments and 5% in landed homes. Bukit Batok had 17% and 3%, Bukit Panjang 15% and 2%, and Choa Chu Kang 13% and 1%. Jurong East had 9% in condos and no landed households, and Jurong West had 7% and 1%. The census table has no separate figures for Boon Lay or Tengah, and the HDB table has no separate figures for Boon Lay.

Condo owners should talk to their MCST first. BCA guidance says owners must follow the MCST by-laws and check with the MCST before renovating. Any change to common property needs the MCST's prior written approval. This can matter when a new condenser or piping route touches shared walls or ledges. If you own a landed home with several indoor units, ask for a chemical wash quote that lists each unit separately.

Rules for this trade: NEA's mandatory technician certification covers water-cooled chillers, not household aircon. For refrigerant work on home aircon, such as a gas refill, ITE runs a Certificate of Competency in Residential Air-Conditioning System (Refrigerant) (NEA), so ask whether your technician holds it. Work on power points or circuit breakers needs an EMA Licensed Electrical Worker. These licences are held by individuals, not companies (EMA), so ask which named worker will do the electrical part.