<h3>Conventional flats</h3>
<table style="width:100%;">
 <thead>
 <tr>
 <th rowspan="2" scope="col">Type of Flat</th>
 <th rowspan="2" scope="col">Location of Air-Conditioner</th>
 <th rowspan="2" scope="col">Position of Air-Conditioner</th>
 <th colspan="2" scope="col">Installation Method</th>
 </tr>
 <tr>
 <th scope="col">Split-unit Air-Conditioning Unit</th>
 <th scope="col">Window Unit</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td colspan="2" rowspan="1">Flats with air-conditioner ledge</td>
 <td>On concrete air-conditioner ledge</td>
 <td>
 Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-k.pdf" target="_blank">K</a> 
 (PDF, 31KB)
 </td>
 <td>N/A</td>
 </tr>
 <tr>
 <td colspan="1" rowspan="7">Flats without air-conditioner ledge</td>
 <td colspan="1" rowspan="2">
 Master bedroom
 </td>
 <td>
 Within air-conditioner opening
 </td>
 <td>
 Drawings <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-a1.pdf" target="_blank">A1</a> (PDF, 40KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-a2.pdf" target="_blank">A2</a> (PDF, 46KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/A3-air-con-drawing.pdf" target="_blank">A3</a> (PDF, 110KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-g1.pdf" target="_blank">G1</a> (PDF, 39KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-g2.pdf" target="_blank">G2</a> (PDF, 49KB)
 </td>
 <td>
 Drawings <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-c.pdf"></a><a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-b1.pdf" target="_blank">B1</a> 
 (PDF, 38KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-b2.pdf" target="_blank">B2 </a>(PDF, 38KB)
 </td>
 </tr>
 <tr>
 <td>
 At parapet below window nearest to bedroom door (when existing air conditioner opening is not suitable for installation of air-conditioning unit)
 </td>
 <td>
 Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-c.pdf" target="_blank">C</a> 
 (PDF, 31KB)
 </td>
 <td>
 N/A
 </td>
 </tr>
 <tr>
 <td colspan="1">
 
 </td>
 <td>
 Air-conditioner cabinet
 </td>
 <td>
 Drawings 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j1.pdf" target="_blank">J1</a> (PDF, 92KB) 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j3.pdf" target="_blank">J3</a> (PDF, 87KB)
 </td>
 <td>
 Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j2.pdf" target="_blank">J2</a> 
 (PDF, 82KB)
 </td>
 </tr>
 <tr>
 <td colspan="1">
 Other bedrooms
 </td>
 <td>
 On window sill nearest to bedroom door (originally provided by HDB)
 </td>
 <td>
 N/A
 </td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-d.pdf" target="_blank">D</a> (PDF, 32KB) </td>
 </tr>
 <tr>
 <td colspan="1">
 Study-cum-bedroom (where sliding doors are provided)
 </td>
 <td>
 On extreme left of window sill when viewed from bedroom door (originally provided by HDB)
 </td>
 <td>
 N/A
 </td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-d.pdf" target="_blank">D</a> (PDF, 32KB) </td>
 </tr>
 <tr>
 <td colspan="1">
 Service balcony
 </td>
 <td>
 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)
 </td>
 <td>N/A 
 </td>
 <td>
 N/A
 </td>
 </tr>
 <tr>
 <td colspan="1">
 Kitchen (applicable for 1- and 2-room flats only)
 </td>
 <td>
 At brick or reinforced concrete parapet wall below window only
 </td>
 <td>
 Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-c.pdf" target="_blank">C</a> 
 (PDF, 31KB) </td>
 <td>
 N/A
 </td>
 </tr>
 </tbody>
</table>

Conventional flats

<table style="width:100%;">
 <thead>
 <tr>
 <th rowspan="2" scope="col">Type of Flats</th>
 <th rowspan="2" scope="col">Location of Air-Conditioner</th>
 <th rowspan="2" scope="col">Position of Air-Conditioner</th>
 <th colspan="2" scope="col">Installation Method</th>
 </tr>
 <tr>
 <th scope="col">Split-unit Air-Conditioning Unit</th>
 <th scope="col">Window Unit</th>
 </tr>
 </thead>
 <tbody>
 <tr>
 <td colspan="2" rowspan="1">Flats with air-conditioner ledge</td>
 <td>On concrete air-conditioner ledge</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-k.pdf" target="_blank">K</a> 
 (PDF, 31KB)</td>
 <td>N/A</td>
 </tr>
 <tr>
 <td colspan="1" rowspan="8">Flats without air-conditioner ledge</td>
 <td colspan="1" rowspan="4">Master bedroom</td>
 <td>Within air-conditioner opening</td>
 <td>Drawings 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-a1.pdf" target="_blank">A1</a> (PDF, 40KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-a2.pdf" target="_blank">A2</a> (PDF, 46KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/A3-air-con-drawing.pdf" target="_blank">A3</a> (PDF, 110KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-g1.pdf" target="_blank">G1</a> (PDF, 39KB), 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-g2.pdf" target="_blank">G2</a> (PDF, 49KB)</td>
 <td>
 Drawings <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-b1.pdf" target="_blank">B1</a> (PDF, 38KB) 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-b2.pdf" target="_blank">B2 </a>(PDF, 38KB)
 </td>
 </tr>
 <tr>
 <td>On window sill nearest to bedroom door (when existing air-conditioner opening is not suitable for installation of air-conditioning unit)</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-h.pdf" target="_blank">H</a> 
 (PDF, 36KB)</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/home-care-guide/air-conditioners/drawing-f.pdf" target="_blank">F</a> 
 (PDF, 35KB)</td>
 </tr>
 <tr>
 <td>At parapet below window nearest to bedroom door (when existing air-conditioner opening is not suitable for installation of air-conditioning unit)</td>
 <td>Drawings 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-c.pdf" target="_blank">C</a> (PDF, 31KB) 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/home-care-guide/air-conditioners/drawing-e1.pdf" target="_blank">E1</a> (PDF, 38KB) 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/home-care-guide/air-conditioners/drawing-e2.pdf" target="_blank">E2</a> (PDF, 33KB)</td>
 <td>N/A</td>
 </tr>
 <tr>
 <td>Air-conditioner cabinet</td>
 <td>Drawings 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j1.pdf" target="_blank">J1 </a>(PDF, 92KB) 
 <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j3.pdf" target="_blank">J3</a> (PDF, 87KB)</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-j2.pdf" target="_blank">J2</a> (PDF, 82KB)</td>
 </tr>
 <tr>
 <td colspan="1">Other bedrooms</td>
 <td>On window sill nearest to bedroom door (originally provided by HDB)</td>
 <td>N/A</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-d.pdf" target="_blank">D</a> (PDF, 32KB)</td>
 </tr>
 <tr>
 <td colspan="1">Study-cum-bedroom (where sliding doors are provided)</td>
 <td>
 On extreme left of window sill when viewed from bedroom door (originally provided by HDB)
 </td>
 <td>N/A</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-d.pdf" target="_blank">D</a> <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-d.pdf" target="_blank"></a>(PDF, 32KB)</td>
 </tr>
 <tr>
 <td colspan="1">Service balcony</td>
 <td>On the floor of service balcony or on walls of the unit within service balcony (any other locations are subjected to HDB's approval)</td>
 <td>N/A 
 </td>
 <td>N/A</td>
 </tr>
 <tr>
 <td colspan="1">
 Kitchen (applicable for 1- and 2-room flats only)
 </td>
 <td>At brick or reinforced concrete parapet wall below window only</td>
 <td>Drawing <a href="/-/media/managing-my-home/renovation-and-maintenance/home-maintenance/professional-help-and-contractors/air-conditioners/drawing-c.pdf" target="_blank">C</a> (PDF, 31KB) </td>
 <td>N/A</td>
 </tr>
 </tbody>
</table>
Check with the HDB Branch managing your block if you need to install an additional air-conditioning unit or enquire about the location or method of installation for your air-conditioner.

Maintenance for Air Conditioners

Recommended

Change in Flat Ownership (Not Through a Sale)

Renovation Guidelines for Building Works

Looking for Renovation Contractors

Acquiring Private Property