Your Thermador oven should hold temperature within a few degrees and preheat fast. When it drifts, throws an error, or won't ignite, our Littleton technicians diagnose the exact fault and fix it right the first time.
We work on the full modern Thermador oven lineup, gas and electric, built-in and freestanding.
Thermador's Professional (PRO Grand and PRO Harmony) ranges, Masterpiece single and double wall ovens, and the Professional Series wall ovens make up most of the units we see. We also repair Thermador steam and convection steam ovens, speed ovens with microwave-convection combos, and the warming drawers that pair with them.
Across these lines the same subsystems tend to fail: the convection fan motor and its high-limit thermostat, the dual-stack bake and broil igniters on gas models, the electronic control board and temperature sensor on electric models, and the door latch assembly used during self-clean. Knowing which series you own tells us which parts to bring, so have your model number ready when you call.
If your Thermador is doing any of these, it is a repair we handle regularly.
A Thermador oven regulates heat through a resistance temperature sensor (RTD) feeding the control board, not a simple thermostat. When bakes come out uneven, the culprit is usually a drifting RTD probe, a weakening bake element or igniter, or a control board reading the sensor wrong, and each points to a different fix.
We put a calibrated thermocouple inside the cavity, cycle the oven, and compare the real temperature to what the board reports. That tells us whether you need a sensor, a heating element, or a board recalibration, so you are not paying to swap parts that were fine.
One visit, transparent pricing, and a fix that lasts.
Call (720) 903-2603 any hour or book online. We confirm your Thermador series and model number so the van is stocked before we arrive.
For the $89 service-call fee we read fault codes, test the sensor, igniters, elements, and control board, and pinpoint the actual failure.
You get a firm price before any work starts, and the $89 is credited toward the repair. No surprise charges.
We install OEM-quality parts, then re-run a heat cycle and confirm the oven holds temperature before we leave.
Littleton sits near 5,350 feet, and thin air changes how gas burns.
At Littleton's altitude, gas ovens run a leaner air-fuel mix, which can leave a Thermador bake burner slow to ignite or prone to nuisance shutdowns as the igniter ages. When we replace an igniter or gas valve, we check that the burner lights cleanly and reaches temperature the way it should up here.
The dry Front Range climate also hardens oven door gaskets faster, so we inspect the seal on every visit. A brittle gasket lets heat escape and forces the oven to overwork, which is an easy fix that protects the pricier components.
Quick Answers
Littleton Appliance Repair is an independent service company that has repaired Thermador ovens, ranges, and wall ovens across Littleton since 2014. We handle Professional, Masterpiece, and steam oven lines using OEM-quality parts. Call (720) 903-2603 to book, with the phone answered 24/7.
Every Thermador oven repair starts with an $89 diagnostic service-call fee, which is credited toward the repair once you approve it. You get a firm, final price after our on-site diagnosis, so parts like a temperature sensor or bake igniter are quoted up front with no surprises.
On a Thermador oven, uneven or wrong temperatures usually trace to a drifting RTD temperature sensor, a failing bake element or igniter, or a control board that needs recalibration. We test the true cavity temperature with a calibrated thermocouple before replacing anything, so you only pay for the part that actually failed.
FAQ
Anything else — call any hour, a real person answers.
Yes. We regularly service both the Professional Series and Masterpiece single and double wall ovens, along with PRO Grand and PRO Harmony ranges, steam ovens, and speed ovens. Tell us your model number when you call and we will bring the right parts.
Thermador fault codes point to specific subsystems, such as a temperature sensor circuit, a stuck door lock, or a control communication fault. The code narrows the search but not the fix, so we read it on site and test the affected part before quoting the repair.
Yes. A door that stays latched after self-clean usually means a failed door lock motor or a control board that lost track of the latch position. We can release it safely and replace the faulty component so the oven is usable again the same visit in most cases.
We stock common Thermador parts like igniters, temperature sensors, elements, and door components based on the model number you give us when booking. If a less common part is needed, we source the factory-specified part and schedule a quick return.
Answered 24/7 · $89 diagnostic credited to the repair
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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.