Air-Conditioners

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

Maintenance tips

Have your air conditioning condensing unit serviced regularly by a licensed service provider. Ask the service provider whether your air conditioning condensing unit requires a replacement of brackets due to rust and corrosion.

In addition, clean the air-filters of your air conditioning condensing units to maintain optimal airflow.

Penalties

Under the Building and Construction Authority's (BCA) Building Control Regulations, flat owners will need to engage a trained air conditioning unit installer to carry out installation work that meets safety requirements, if they are installing an air conditioning condensing unit on the exterior of the flat, or if the unit projects outwards from the flat. Flat owners face a penalty of up to S$5,000 and/ or jail term of up to 6 months, for improper installation of an air conditioning condensing unit.

Flat owners face a maximum fine of $20,000, and/ or jail term of up to 1 year, if an air conditioning condensing unit and/ or its structural supporting system, opening panel, frame, and tray fall due to a lack of maintenance.

Building and Construction Authority (BCA) list of approved air conditioning unit installers

You can only engage BCA trained air conditioning unit installers to replace or install your air conditioning condensing units.

 

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 (PDF, 337KB) if your condensing unit is leaking. Please note that the service between you and the vendor is on a private arrangement basis. 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

See the approved locations and installation methods for air-conditioners by flat type. Contact the HDB Branch managing your flat for other enquiries.

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, 110KB), 
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 installation of air-conditioning 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 HDB) 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 HDB) N/A Drawing D
(PDF, 32KB)
Service balcony
 On the floor of service balcony or on the walls of the unit within service balcony (any other locations are subjected to HDB's approval) N/A
 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, 110KB),
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-conditioning 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-conditioning 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 HDB) 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 HDB) N/A Drawing D
(PDF, 32KB),
Service balcony

On the floor of service balcony or on walls of the unit within service balcony (any other locations are subjected to HDB's approval)

 N/A 
 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

 

×

Recommended