While new ISO publications dealing with greenhouse gas accounting and verification are being increasingly utilised, the existing ISO 14001 process provides a powerful tool to mitigate climate change effects through improved business management. As the process has already been widely implemented through a range of businesses across the world, it is more efficient to build on these existing systems to better manage greenhouse gas (GHG) emissions, rather than starting afresh. This paper will examine the use of ISO 14001 currently and propose a series of ‘checks’ that can be applied by any business with an extant EMS to assess whether GHG issues are being adequately addressed by the EMS.