Four methods with varying levels of accuracy and data collection required are outlined in this guidance to calculate GHG emissions. Organizations may calculate fugitive GHG emissions from refrigeration and air conditioning equipment, fire suppression systems, or purchased industrial gases with one of the following methods.

This guidance document addresses the following:

• Emissions from users of refrigeration and air conditioning equipment including household refrigeration, domestic air conditioning and heat pumps, mobile air conditioning, chillers, retail food refrigeration, cold storage warehouses, refrigerated transport, industrial process refrigeration, and commercial unitary air conditioning systems.

• Emissions from fixed and portable fire suppression equipment.

• Direct emissions from purchased industrial gases. These gases can be used in processes such as manufacturing, testing, or laboratory applications.

Emissions from aerosols, solvent cleaning, foam blowing, or other applications are not addressed by this protocol.