Singapore Singapore revises MEPS rules for VRF Air Conditioners

Singapore revises MEPS rules for VRF Air Conditioners

On April 1, 2021, the National Environment Agency (NEA) of Singapore implemented the “Energy Conservation (Regulated Goods and Registered Suppliers) (Amendment) Regulations 2021” and the “Energy Conservation (Prescribed Regulated Goods) (Amendment) Order 2021.” These regulations and order amend the requirements for three-phase Variable Refrigerant Flow (VRF) air conditioners in the regulations and order of 2017. The former stipulates the Minimum Energy Performance Standards (MEPS) and the Mandatory Energy Labeling Scheme (MELS) for three-phase VRF air conditioners, and the latter provides the definition of three-phase VRF air conditioners.

On the same day, the NEA also announced the revision of the test standard for energy performance of single phase air conditioners.


The original texts of the regulations and orders can be downloaded from the following links:

The NEA’s announcement on the implementation of the revised regulations and order is available at:



Energy efficiency requirements for three-phase VRF air conditioners

From April 1, 2021, three-phase VRF air conditioners placed on the domestic market  are required to comply with the following requirements:

  • MEPS
    1-tick of the rating corresponds to MEPS. The rating is based on the Integrated Energy Efficiency Ratio (IEER), and represented in five levels from 1-tick (IEER 4.35~) to 5-tick (IEER 6.15~).
  • Company Registration and Product Registration
    Importers and manufacturers of three-phase VRF air conditioners are required to register themselves and their products with NEA.
  • Energy label
    Registered companies shall display the energy labels on their products and all publicity materials (digital and non-digital).

In addition, these revised regulations stipulate registration fees and test standards.


Revision of the energy performance testing standard for single phase air conditioners

From April 1, 2021, the following standards were applied to the energy performance testing for single phase air conditioners.

Type of products Test standard Climate class
Window, Casement and Single split ISO 5151:2017 T1
Multi-split ISO 15042:2017 T1

With effect of this revision, ISO 5151:2010 and ISO 15042:2011 were repealed.
The new test standards was used for test reports on and after April 1, 2021.

Author / Responsibility


Researcher, Research & Consulting Dept. EnviX Ltd.

Business Performance

In charge of Southeast Asia for managing information on the environmental regulations.


BA, Human Life and Environmental Sciences, Ochanomizu University