A professional who repairs defective thermostats used in refrigeration, air-conditioning, and heating equipment, following blueprints and other specifications. Responsibilities include:

• Disassembles and examines thermostats to locate and remove defective parts, using handtools.
• Replaces defective parts, such as bellows, range spring, and toggle switch, and reassembles thermostat according to blueprint specifications, using cam press and handtools.
• Measures tolerances of assembled parts, using micrometer and calipers.
• Repairs leaks in valve seats or bellows of automotive heater thermostats, using soft solder, flux, and acetylene torch.
• Examines thermostat for defects, such as loose screws and dents.
• Writes repair ticket to identify thermostat and places repaired thermostats in tote boxes.
• Calibrates thermostat for specified temperature or pressure settings.