Replacing an EVAP canister is a fairly straightforward process and can be completed in a relatively short amount of time. Depending on the model, type, and condition of your vehicle, replacing an EVAP canister typically takes anywhere from 1 to 3 hours. This includes labor time for removing the old part and installing the new one as well as any additional components that may need to be removed or replaced such as hoses or wiring harnesses. It is important to note that this estimate does not include any diagnostic steps necessary for assessing why the original part failed in order for you to make sure it does not happen again with your new one. So if you decide to replace your EVAP canister yourself, make sure you allow enough time for completing all necessary steps correctly so that it will last longer than its predecessor!