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Residential

Air-Conditioners

Regular maintenance of your air-conditioner will help prolong its lifespan and keep it running efficiently. It is also important to check the brackets holding up the air-conditioner condenser as any loose bolts or improper installation can result in accidents. 

Maintenance tips

Have your air-conditioner serviced regularly by a licenced service provider. Ask the service provider whether your condenser unit requires a replacement of brackets due to rust and corrosion.

In addition, clean the air-filters of your air-conditioners to maintain optimal airflow.

Penalties

Under the Building Control Act, homeowners can face a penalty of up to S$5,000 and/ or jail term of up to six months for improper installation of air conditioner.

In addition, flat owners can also face a fine of up to $10,000 and/ or a jail term of up to one year, if the air-conditioner falls due to lack of maintenance, under the Building Maintenance and Strata Management Act (BMSMA).

What to look out for

Please follow these steps to inspect your air-conditioner.

  • For the air-conditioner, ensure that the installation meets our safety requirements. The condenser unit/ bracket should only be mounted on concrete or brick walls
  • Monitor the stainless steel brackets which hold up the unit for signs of corrosion and rust 
  • Look out for any signs of leaking 
  • The piping for the condenser unit should be secure and run into your flat, with the condensed water discharged into a nearby floor trap

Flat interior

  • Inside your flat, air-conditioner brackets should be mounted only on concrete/ brick walls.
  • Air-conditioner brackets should not be mounted on the timber frame

Points to note

  • The stainless steel brackets should be mounted securely on the bricks/ concrete walls
  • The air-conditioner bracket/ condensing unit should not be corroded or rusty
  • Ensure proper insulation of air-conditioner condensing unit
  • Ensure there is no leakage of condensation water
  • All piping for the air-conditioner condensing unit must run internally and the condensation water should properly discharge into a nearby internal floor trap
  • Consider installing HDB’s patented air-conditioner tray if your condensing unit is leaking. You may refer to www.polymertec.com/aircontray.html for more information on the patented air-conditioner tray. Please note that the service between you and the vendor is on a private arrangement basis. By clicking the hyperlink, you will be leaving HDB’s secured website. Access to the site will be at your own risk and HDB will not be responsible for any issues between you and the vendor relating to the product.
What to avoid

 

 

 

 

What to follow

 

 

 

 

Do check with the air-conditioner serviceman if there is a need to replace a corroded/ rusty air-conditioner unit. Regular maintenance of the air-conditioner and the supporting frame helps prevent the risk of it getting dislodged, thereby ensuring public safety.

An air-conditioner that is improperly installed or maintained can cause serious injury or death to members of the public walking below your flat when it falls.

Air-conditioner installation

Check here for the approved locations and installation methods for air-conditioners according to your flat type. If you need to install an additional compressor unit or have further enquiries, please check with the HDB Branch managing your block.

Approved locations and installation methods

This video illustrates the steps for air-conditioner installation and maintenance.

Conventional flats

The following installation guidelines must be followed for conventional flats.

Type of Flats Location of Air-Conditioner Position of Air-Conditioner Installation Method
Split-unit Air-Conditioning Unit Window Unit
Flats with air-conditioner ledge On concrete air- conditioner ledge Drawing K
(PDF, 31KB)
N/A
Flats without air-conditioner ledge
Master bedroom
Within air-conditioner opening Drawings
A1
(PDF, 40KB), A2
(PDF, 46KB), A3
(PDF, 56KB), G1
(PDF, 39KB), G2
(PDF, 49KB)
Drawings B1
(PDF, 38KB)
B2
(PDF, 38KB)
At parapet below window nearest to bedroom door (when existing air-conditioner opening is not suitable for the installation of the air-conditioner condensing unit) Drawing C
(PDF, 31KB)
N/A
Air-conditioner cabinet Drawings
J1
(PDF, 92KB)
J3
(PDF, 87KB)
Drawing J2
(PDF, 82KB)
Other bedrooms
On window sill nearest to bedroom door (originally provided by us) N/A Drawing D
(PDF, 32KB)
Study-cum-bedroom (where sliding doors are provided)
On extreme left of window sill when viewed from bedroom door (originally provided by us) N/A Drawing D
(PDF, 32KB)
Service balcony
On the floor of service balcony or on the walls of the unit within service balcony Drawing C
(PDF, 31KB)
N/A
Kitchen 
(applicable for 1- and 2-room flats only)
At brick or reinforced concrete parapet wall below window only Drawing C
(PDF, 31KB)
N/A

Flats with precast facade

The following installation guidelines must be followed for flats that have their external surface covered with tiles or other finishes.

Type of Flats Location of Air-Conditioner Position of Air-Conditioner Installation Method
Split-unit Air-Conditioning Unit Window Unit
Flats with air-conditioner ledge On concrete air-conditioner ledge Drawing K
(PDF, 31KB)
N/A
Flats without-air conditioner ledge
Master bedroom
Within air-conditioner opening Drawings
A1
(PDF, 40KB), A2
(PDF, 46KB), A3
(PDF, 56KB), G1
(PDF, 39KB),
G2
(PDF, 49KB)
Drawings B1
(PDF, 38KB)
B2
(PDF, 38KB)
On window sill nearest to bedroom door (when existing air-conditioner opening is not suitable for installation of air-conditioner condensing unit) Drawing H
(PDF, 36KB),
Drawing F
(PDF, 35KB),
At parapet below window nearest to bedroom door (when existing air-conditioner opening is not suitable for installation of air-conditioner condensing unit) Drawings
C
(PDF, 31KB), E1
(PDF, 38KB),
E2
(PDF, 33KB),
N/A
Air-conditioner cabinet Drawings
J1
(PDF, 92KB),
J3
(PDF, 87KB),
Drawing J2
(PDF, 82KB),
Other bedrooms
On window sill nearest to bedroom door (originally provided by us) N/A Drawing D
(PDF, 32KB),
Study-cum-bedroom (where sliding doors are provided)
On extreme left of window sill when viewed from bedroom door (originally provided by us) N/A Drawing D
(PDF, 32KB),
Service balcony
On the floor of service balcony or on walls of the unit within service balcony Drawing C
(PDF, 31KB),
N/A
Kitchen 
(applicable for 1- and 2-room flats only)
At brick or reinforced concrete parapet wall below window only Drawing C
(PDF, 31KB),
N/A

 

Building and Construction Authority (BCA) list of approved air-conditioner installers

You can only engage BCA-trained air-conditioner installers to replace or install your air-conditioners.