What's Included
- Gas burner port deep cleaning and cap alignment for all burners
- Gas manifold pressure verification with calibrated manometer
- Spark ignition system test — module output and electrode condition
- Combustion quality check at all power levels
- Gas valve visual inspection and fitting leak check
- Brass burner cap and control knob inspection
- Written maintenance report after every visit
The La Cornue gas rangetop delivers the full power of the brand's Château-heritage burner system in a standalone configuration — ideal for custom kitchen builds where a separate rangetop and oven are desired. Annual maintenance keeps the gas system operating safely and the performance at the level these appliances are built to deliver.
What La Cornue Rangetop Maintenance Covers
Burner Port Deep Cleaning
Gas rangetop burner ports are the single most maintenance-sensitive component in any gas cooking appliance. Cooking residue, mineral deposits from water, and grease that escapes the grates all work their way into the burner cap ports over time. Annual deep cleaning clears every port and restores full gas flow to each zone — the difference in flame quality is immediately noticeable after a proper cleaning service.
Gas Pressure Verification
La Cornue's gas system is designed for a specific supply pressure. Variations — too high or too low — affect combustion quality, gas valve longevity, and cooking performance. We verify manifold pressure with a calibrated manometer at every maintenance visit and report any deviation from specification. Where a pressure issue is found, we advise on whether it requires a regulator adjustment or a conversation with the gas supplier.
Ignition System Test
The spark ignition module and electrode assembly are tested at every burner. We assess spark gap, electrode condition, and module output to identify wear before it results in a failure. A weak electrode that still sparks today may fail to light reliably in cold or humid conditions — annual inspection catches this before it becomes a problem.
Combustion Quality Check
Every burner is run at low, medium, and high power to verify a clean blue flame with no yellow tips, incomplete combustion, or excessive soot. Yellow flame is a combustion quality indicator that may signal gas type mismatch, burner port restriction, or air shutter misalignment — all conditions that have both performance and safety implications.
Gas Fitting Inspection
All accessible gas fittings are visually inspected and tested with approved leak detection solution. La Cornue's brass fittings are exceptionally durable, but annual verification is part of responsible gas appliance ownership.
Transparent Pricing
La Cornue Rangetop maintenance visits start from $145. Combined with a range or cooktop visit, multi-appliance discounts apply.