Redundant heating systems include a plurality of heating circuits to heat a region. Heating circuits include a temperature sensor to sense a temperature of the region, a heating element, a temperature controller to provide power to the heating element based on the sensed temperature of the region, and a latching thermostat in series with the heating element. The latching thermostat consumes power supplied by the temperature controller to the heating element in response to a temperature of the latching thermostat reaching an open latch threshold temperature.