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Residential

Air-Conditioners

Home owners are responsible for the proper installation, safety, and stability of the air-conditioners (casement/ window unit/ split type) in their flat.

If you would like to replace or install an air-conditioner in your flat, you must engage air conditioner installers who have been trained by the Building and Construction Authority. Air-conditioner window units and split-type condensing units must be installed at approved locations, using approved installation methods.

Conventional flats

The following guidelines must be followed for air-conditioner installation in conventional flats.

Conventional flats

Type of Flat 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

Check with the HDB Branch managing your block if you need to install an additional compressor unit, or enquire about the location or method of installation for your air-conditioner.