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A La Cornue range is not merely an appliance; it is a generational investment — a handcrafted object of French precision designed to perform brilliantly for decades when properly cared for. Our annual maintenance program is specifically engineered to keep your appliance in showroom mechanical condition and aesthetic splendor. Unlike a reactive service call triggered by a breakdown, this is a proactive, comprehensive "deep dive" into every subsystem of your range, performed at a scheduled interval before issues have a chance to escalate into costly emergency repairs.

Our 25-point inspection protocol covers the full spectrum of your La Cornue's critical systems. We begin with the gas supply side, deep-cleaning the solid brass burner caps and venturi assemblies to remove accumulated cooking debris and recalibrating the secondary air shutters for your specific gas type — Natural Gas or Liquid Propane — and the current altitude of your installation. We then perform a high-sensitivity electronic leak test on every internal gas fitting, valve stem, and manifold joint to verify absolute safety throughout the range.

Beyond the gas systems, we perform a complete assessment of the ignition electrical system: testing every microswitch, measuring spark module output, and inspecting the condition of the ceramic electrodes for the micro-cracks that cause phantom clicking. We check that all control knob stems are properly lubricated and that the rotational detents are crisp and positive. We also flush and reload the thermostat capillary tubes on analog Chateau models, a service that is easy to overlook but critical to long-term temperature accuracy.

The oven section receives particular attention during an annual visit. We use calibrated thermal data loggers to independently verify the oven's temperature accuracy across multiple set points, adjusting the electronic offset or the analog thermostat bulb positioning as needed. We inspect the RTD sensor probe for early signs of thermal drift, check the bake and broil elements for localized hot spots indicative of imminent failure, and examine the door hinges and tension springs for fatigue.

Finally, we complete a full electronic diagnostic scan of the control board, verifying the integrity of all relays, triac switches, and sensor inputs. By identifying minor component wear early — before the high-demand cooking seasons of fall and winter — we prevent the costly and inconvenient emergency repairs that so often derail holiday entertaining. This annual service is the single most effective way to protect the enduring value and peak performance of your La Cornue masterpiece.