A system for detecting stacking and controlling temperature in a water heater. In one embodiment, a system includes a processor operable to detect the WiFi communications between a UE and a wireless access point of a WiFi network, to identify errors in the WiFi communications, and to determine a periodicity of the errors based on the LTE signaling structure. However, the present techniques may also be applied to any other suitable applications, such as liquor processing, where energy may be used to remove water from the liquor. Like the safety program, the functional program has a modular structure. The vapor retarder provides enhanced performance by preventing the seepage of moisture back into the bulk of the insulation. In this manner, enhanced access can be provided to the fiber optic module and their fiber optic connections.