HDB Permit for Aircon Installation: Who Needs to Apply?

Do you know that some flat owners need to apply for an HDB permit to install an air conditioner or other higher capacity equipment/appliances?

If your HDB flat is provided with a 30-amp main switch, you need to comply with certain guidelines and requirements before engaging any aircon installation works. Find out if you need to apply for a permit!

Types of Electrical Work

Permit Required?

Aircon installation using an existing approved 15-amp power point or 20-amp isolator provided by the HDB.

No

Installation of air-conditioner (casement/ window unit/ split type) using new 15-amp power point or new 20-amp isolator

Yes

You need to apply for an electrical permit for a 15-amp power point or 20-amp isolator before you can have the air conditioner installation carried out in your HDB flat.

HDB Guidelines For Aircon Installation

HDB Flat Type

Maximum Total Running Current Allowed

Air-Conditioner Condensing Unit - Maximum Allowed Weight

1/ 2-room

5.00 amps

80kg

3/ 4/ 5-room/ Executive Masionette/ Multi-Generation

8.50 amps

80kg

Executive Apartment (with 4 bedrooms)

8.50 amps

80kg

Executive Apartment (with 5 bedrooms in converted block)

11.00 amps

80kg

How the MUP and HIP Affect Aircon Installation Works in HDB Flat

HDB blocks completed on/ after 1 January 1994 or have undergone the Main Upgrading Programme (MUP)/ Home Improvement Programme (HIP) are provided with higher electrical loading of a 40-amp main switch. This means that if your HDB flat falls under this category, you don’t need to secure a permit to install your aircon.

In summary, the aircon installation guidelines for HDB blocks under MUP or HIP:

• The running current of the air conditioner should be restricted by a 20-amp double pole (DP) isolator or 15-amp power point
• A maximum of two split-type air-conditioner condensing units can be installed
• The maximum weight allowed is 110kg per wall panel regardless of whether the installation is on the external wall or air-conditioner ledge
• For wall-mounted ai -conditioner condensing units, each wall panel is allowed to have only one air-conditioner condensing unit

As a homeowner, you must ensure the proper installation, safety, and stability of your air conditioner whether it is casement, window unit, or split type.

If you are unsure whether you need to apply for an HDB permit, check if your flat is provided with higher electrical loading.

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