Your La Cornue is a hand-built French range, not a mass-produced oven. We repair the vaulted convection ovens, dual-fuel electric decks, and gas burners on Chateau, CornuFe, and Grand Palais models across the Littleton area.
A La Cornue is built differently from any American range, and it fails differently too.
La Cornue ovens use a signature vaulted (voute) oven chamber that circulates heat by convection off the curved ceiling, paired with brass burner assemblies and heavy enameled cast-iron parts. On the flagship Grand Palais 180, the twin ovens combine a gas vaulted oven with an electric convection oven, so a single 'oven won't heat' complaint can trace back to two entirely separate systems.
We are an independent shop, not a La Cornue dealer, but we have serviced these ranges since our founding in 2014. That means we know the CornuFe 90 and CornuFe 110 dual-fuel layouts, the Chateau series with its modular ovens, and the way the brass burner rings and thermocouples behave once Littleton's dry, high-altitude air has aged them. We diagnose the actual failure instead of swapping the first part we see.
These are the symptoms we hear repeatedly on La Cornue ranges in the SW Denver metro:
Every visit starts with the $89 diagnostic service call, credited toward the repair once you approve it.
Chateau, CornuFe 90/110, or Grand Palais — and whether the failing oven is the gas vaulted chamber or the electric convection deck. On dual-fuel ranges these are diagnosed separately.
We check the thermocouple, igniter, gas valve, burner flame quality, sensor probe, elements, and control board with meters, not guesswork.
At Littleton elevation we verify burner calibration and flame strength, and inspect gaskets and seals hardened by the dry air.
You get a firm price after the on-site diagnosis. We install OEM-quality, factory-specified parts and re-test the oven at temperature before we leave.
The repair path depends on the chamber. This helps you describe the problem when you call.
| Oven type | Found on | Common fault | What we check first |
|---|---|---|---|
| Gas vaulted (voute) | Chateau, Grand Palais gas side | Won't stay lit, uneven bake | Thermocouple, burner, altitude calibration |
| Electric convection | CornuFe 110, Grand Palais electric side | Cold or off-temp, fan noise | Sensor probe, element, convection fan, board |
| Dual-fuel range | CornuFe 90/110 | One oven fine, one dead | Isolate the affected system, then test |
We come to you across Littleton and the surrounding foothills communities.
Service visits run daily, 8:00 AM to 6:00 PM, and our phone is answered 24/7 at (720) 903-2603. You can also book through our online scheduling page. We cover Littleton, Ken-Caryl, Columbine, Chatfield, Roxborough Park, and SW Denver metro within about 25 miles.
Because La Cornue parts are specialized, tell us your model and the symptom when you call so we can bring the likely brass burner, thermocouple, sensor, or element parts to the first visit.
Quick Answers
Littleton Appliance Repair is an independent shop that has serviced La Cornue ranges since 2014, including Chateau, CornuFe 90/110, and Grand Palais models. We are not a La Cornue dealer, but we diagnose and repair both the gas vaulted ovens and the electric convection ovens. Call (720) 903-2603, answered 24/7.
The most common cause is a worn thermocouple or a weak burner flame that fails to hold the gas valve open. At Littleton's ~5,350 ft altitude, a burner that was never calibrated for elevation can also drop out. An on-site diagnostic pinpoints whether it's the thermocouple, igniter, or gas valve.
It starts with an $89 diagnostic service-call fee, which is credited toward the repair once you approve the work. Because La Cornue ranges are hand-built and use specialized parts, we give a firm price only after diagnosing your specific model on site rather than quoting blind over the phone.
FAQ
Anything else — call any hour, a real person answers.
We install OEM-quality, factory-specified parts sourced to match your model's brass burners, thermocouples, sensors, elements, and controls. We are independent, so we are not obligated to a single supplier, and we tell you honestly what each part is before we install it.
Yes. On dual-fuel ranges like the CornuFe 110 and the Grand Palais, the gas vaulted oven and the electric convection oven are separate systems. We diagnose and repair either or both, isolating the failing side first.
No. Uneven baking usually points to a convection fan that is failing, a heating element that has partially burned out, or a thermostat or sensor reading the vaulted chamber incorrectly. We test the oven at temperature to find which one is off.
It can. Gas burners often need altitude calibration at Littleton's roughly 5,350 ft elevation to light cleanly and hold a strong flame, and the dry climate hardens door gaskets over time. We check both during a repair visit.
Answered 24/7 · $89 diagnostic credited to the repair
Book OnlineReviews
Our built-in Sub-Zero was keeping the freezer fine but the upper fridge zone was sitting around 55. Turned out to be the dual-evaporator setup, exactly what the tech guessed on the phone. Brian had the sealed system diagnosed the first visit, ordered the part, and had us back to normal within the week. He didn't try to sell us a new unit like the last place did.
One of the dual-stack burners on our Wolf range would click and click but never light. He mentioned it's common up here because the burners need to be calibrated for the altitude, which no one had ever told us. Relit perfectly after and he adjusted the others while he was at it.
Fixed our Sub-Zero the same week we called. Fair price, no upsell.
Our dual-zone wine cabinet had drifted so the bottom zone wouldn't hold temp and there was condensation collecting on the glass. They diagnosed it quickly but the part had to come from the manufacturer and took about four days, so we were without it for most of a week. Once it arrived the fix was solid and both zones are holding right where they should. Worth the wait, just be ready for the parts delay on these.
Miele dishwasher wouldn't drain, standing water in the bottom every cycle. Bad drain pump. In and out in about an hour and he cleaned out the filter housing that was part of the problem too.
The door gasket on our 15-year-old Sub-Zero had gotten brittle and it was sweating around the seal. New OEM gasket and it seals like new again. Appreciated that they used the factory part instead of some universal thing.
Thermador wall oven quit heating right before we were hosting. Called in the morning and they got someone out that same afternoon. Bad igniter. He had the part on the truck and we still made our dinner.
Ice maker in our Sub-Zero was making cloudy hollow cubes and barely any of them. He flushed the system, replaced a valve, and now it actually keeps up when we have people over. Nice guy, wore booties in the house without being asked.
Solid work on our Bosch dishwasher, the drain pump had failed. The only thing is the $89 service call fee felt a little steep before I knew they credit it toward the repair. Once I proceeded it came off the bill, so no real complaint, just wish I'd understood that up front.
Our Viking freezer was building up a wall of frost and not defrosting on its own. Turned out to be the defrost heater. Fixed it and explained what was going on so I understood why it happened.
Two burners on our Wolf cooktop wouldn't spark. Tech recalibrated them for the elevation and swapped the igniters. Works better than it has in years honestly.
Warm upper zone on our Sub-Zero, classic apparently. They knew exactly what it was, ordered the evaporator part, and came back to install it a couple days later. Honest and easy to deal with the whole way through.
Not many people around here will even touch a Gaggenau. These guys did, got the control board sorted, and were straight with me about the cost of the part on a unit this expensive.
Miele steam oven throwing an error and shutting off mid-cook. The tech was great and clearly knew the unit, but he ran about 40 minutes behind the window they gave me and I had to shuffle some things around. Fixed it in one visit though and it's been perfect since, so I'd still call them again.
Had them out for our built-in outdoor grill that wasn't lighting evenly. Didn't expect them to do outdoor units but they did and dialed it in for the altitude. Grilling season saved.
Quick, clean, and they answered when I called at 9pm the night before. Dishwasher's draining again.
This was a big one, the sealed system on our Sub-Zero failed and that's a job a lot of shops won't take on. They did it right, used factory-spec parts, and stood behind the work. Given it's a $12k built-in I'm glad I found someone who actually knew these inside and out instead of just replacing the whole fridge.
Wine fridge kept fogging up on the door and the temp was bouncing around. Fixed same visit and no more condensation.