A cover detection system may include a magnet positioned on a first portion of a spa, the first portion being one of a spa cover or a spa shell. The cover detection system may include a sensor positioned on a second portion of the spa, the second portion being the other one of the spa cover or the spa shell, wherein the sensor is configured to detect a position of the first portion relative to the second portion. The cover detection system may include a wireless controller in communication with the sensor, the wireless controller configured to receive information from the sensor indicative of the position, wherein the wireless controller is further configured to provide an indication to a user of whether the position is in a first state, or a second state based at least in part on the information received from the sensor.