Hydrofluorocarbons (HFCs) are potent greenhouse gases used as alternatives to ozone-depleting substances (ODS) being phased out under the Montreal Protocol. Atmospheric observations show that the volume of HFCs in the atmosphere is increasing rapidly, about 10-15% per year.

Significant growth in HFC use is expected in developing countries because of population growth, rapid urbanization, electrification and changing consumer patterns. The increased use of refrigerants will also result in increased energy consumption and greenhouse gas emissions.  If no measures are taken, it is estimated that HFCs will amount to 9-19% of total CO2 emissions by 2050.

Under the HFC Initiative, Coalition partners are currently supporting the development of HFC inventories and studies, information exchange on policy and technical issues, demonstration projects to validate and promote climate-friendly alternatives and technologies, and various capacity-building activities to disseminate information on emerging technologies and practices to transition away from high-GWP HFCs and minimize HFC leakages.


Top facts

In 2010, 55% of total HFCs were used in refrigeration and air-conditioning equipment in homes, other buildings and industrial operations and 24% for air-conditioning in vehicles.
Emissions of HFCs are growing at a rate of 8% in the atmosphere per year: Use of HFCs has grown to about 36% of the global market for new domestic refrigerators and freezers and is expected to reach about 75 % of global production by 2020.
Moving toward highly efficient room air conditioners that use refrigerants with low Global Warming Potential by 2030 would save over 25 gigatonnes of CO2e emissions, saving energy equivalent to removing up to 1500 500MW power plants.



The HFC Initiative's overall objective is to significantly reduce the projected growth in the use and emissions of high-GWP HFCs in coming decades.  More specifically, it aims to mobilize efforts of the private sector, civil society, international organizations, and governments, with a view to:

  • Promote the development, commercialization, and adoption of climate-friendly alternatives to high-GWP HFCs for all relevant industry sectors
  • Build international awareness and support for approaches to curb HFC growth, such as a global phase-down of HFC consumption and production under the Montreal Protocol and commitments/pledges by CCAC partners
  • Encourage national, regional and global policies or approaches to reduce reliance on high-GWP HFCs and support the uptake of climate-friendly alternatives
  • Overcome barriers that limit the widespread introduction of these climate-friendly technologies and practices, including those related to the establishment of standards
  • Encourage the responsible management of existing equipment and better designs for future equipment in order to minimize leaks.


Location of activities

  • West Asia
    • India
      • Pune

Description of activities

Activity | HFC, Finance
India | Ongoing
Hot climatic conditions, a growing construction sector, and increasing per capita income are expected to drive unprecedented demand for air conditioning in India. Over the coming decade living...


The initiative continues to support the HFC agenda through publications and workshops, political outreach events, and investment projects that demonstrate alternative technologies. 2016-2017 initiative highlights include:

  • A supermarket in Chile became the first in the country to adopt new refrigeration technology, demonstrating the viability of HFC alternatives and Chile’s commitment to climate-friendly refrigeration. 
  • At the International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Winter Conference, the initiative ran a workshop on “Sustainable Technologies for Stationary Air Conditioning”, promoting climate-friendly and cost-effective technologies. 
  • The report “Lower-GWP Alternatives in Commercial and Transport Refrigeration: An expanded com-pilation of propane, CO2, ammonia and HFO case studies” was launched on the margins of the 3rd Extraordinary Meeting of the Parties to the Montreal Protocol in Vienna. 
  • A summary of the key findings from the first tranche of CCAC supported HFC inventories was released. 
  • The Maldives Feasibility Study for District Cooling was completed and concluded that substantial reductions of greenhouse gases can be achieved by introducing district cooling to the Hulhumale development area.

5-year milstones:

  • Alternative technology pilot projects carried out in Chile, Jordan, and India.
  • CCAC ministers pushed for the adoption of an ambitious Kigali amendment in Vienna, July, 2016. The amendment was adopted in October 2016.
  • Supported national HFC inventories in 14 countries, which led to the Multilateral Fund funding for similar work in an additional 127 developing countries. 

Initiative contacts

Denise Sioson,
Diesel & HFC Initiative Coordinator
Denise.Sioson [at] un.org

Partners & Actors

Lead Partner: A Coalition partner with an active role in coordinating, monitoring and guiding the work of an initiative.

Implementer: A Coalition partner or actor receiving Coalition funds to implement an activity or initiative.

Got it

Partners (13)


How do HFCs threaten to offset the climate benefits of the Montreal Protocol?

According to research, if the emissions of chlorofluorocarbons (CFCs) and other ozone-depleting substances (ODS) had continued to grow at the rate they were growing before the Montreal Protocol on Substances that Deplete the Ozone layer, the net effect is equivalent to 135 billion tonnes of carbon dioxide, which is double total annual greenhouse gas emissions to date. Hydrofluorocarbons (HFCs) are rapidly increasing in the atmosphere as they are adopted as ozone-friendly alternatives. Emissions of HFCs are growing at a rate of 8% per year, and by 2050, without action, they could rise so high that they almost cancel the tremendous climate benefits won earlier by the phase-out of ODS.

How can we minimize the climate influence of HFCs?

There are three categories of alternative technical options for minimizing the influence of HFCs on climate: (1) Alternative methods and processes (also called ‘not-in-kind’ alternatives): Commercially used examples include fibre insulation materials, dry-powder asthma inhalers and building designs that avoid the need for air-conditioners; (2) Using non-HFC substances with low or zero GWP: Commercially used examples include hydrocarbons, ammonia, CO2, dimethyl ether and other diverse substances used in various types of foam products, refrigeration, and fire protection systems; and (3) Using low-GWP HFCs: HFCs currently in use have a range of atmospheric lifetimes and GWPs (the shorter the lifetime, the lower the GWP). The mix of HFCs in current use, weighted by usage (tonnage), has an average lifetime of 15 years. However, several low- GWP HFCs (with lifetimes of less than a few months) are now being introduced, e.g. HFC-1234ze in foam.

Are there available alternatives to HFCs in all sectors?

There is no ‘one-size-fits-all’ solution on HFC alternatives. Many ozone-friendly and climate-friendly alternatives exist for high-GWP HFCs in a number of sectors. More work needs to be done before full advantage of these alternatives can be taken, and the CCAC contributes to this task through the implementation of HFC inventories, technology demonstration projects, and capacity-building and awareness raising activities. The solution that works best will depend on many factors such as the local situation for production and use, the costs of different alternatives, the availability of components, and the feasibility of implementation.


Back to Top