VEHICLES

Motor Vehicle Air Conditioning Emissions

Fugitive Emissions from Motor Vehicle Air Conditioning

Most on-road vehicles have air conditioning systems, which may use refrigerants that contain or consist of GHG gas compounds listed in Appendix E of the LGOP.

HFCs-predominately, HFC-134a-are the primary refrigerants used for motor vehicle air conditioners and are themselves GHGs. Leaks from HFC-based air conditioning systems (which are common) are considered Scope 1 fugitive emissions.

Read the LGOP's recommended and alternate approaches for calculating Scope 1 fugitive emissions from mobile sources.

Recommended Approach: Mass Balance Method

Alternate Approach: Estimation based on fleet inventory and refrigerants used