Your Gazco Serial Number is located on your databadge. Databadge locations vary for different Gazco appliances, to find your databadge location please refer to your instruction manual.
If you do not have your instruction manual it can be downloaded from www.gazco.com. If you do not know the name of your appliance please try to locate it visually, the instructions and installation guides can then be downloaded by clicking the technical information link located at the bottom of the appliance page.
Please note: the databadge for Studio Gas and Electric Fires is not easily accessible, please refer to you instruction manual for serial number details.