A system that includes a plurality of controllers that are each controller is configured to operate at least a portion of a Heating, Ventilation, and Air Conditioning (HVAC) system. The system further includes a network provisioning device that is configured to establish a peer-to-peer connection with a controller. The controller is not associated with any wireless networks. The device is further configured to send a request to the controller to identify a wireless network that is associated with the local area network and is in range of the controller. The device is further configured to obtain network credentials for the identified wireless network and to send the network credentials to the controller to join the provisioned mesh network. The controller is configured to use the network credentials to join a provisioned mesh network.