Low noise solid-state thermostat with microprocessor controlled fault detection and reporting, and programmable set points

A low noise solid state thermostat (10) is provided which includes a thermostat input operatively configured to be coupled to a temperature sensor (12); a comparator for comparing an output of the temperature sensor (12) to a predefined setpoint temperature; and solid-state switching circuitry operatively coupled to the comparator for selectively switching current to a thermostat output based on the comparison by the comparator, wherein the comparator comprises a microprocessor (30) for comparing the output of the temperature sensor to the predefined setpoint temperature, the predefined setpoint temperature being programmed into a memory (34) accessible by the microprocessor (30).