Thermador Cooktop & Range Repair
Thermador’s Star burners and ExtraLow simmer are precise — and that precision needs the right repair. We fix Star-burner cooktops, Freedom induction tops and Pro-Harmony ranges across the Bay Area, often the same day, with genuine OEM parts and a 365-day labor warranty.
What goes wrong on a Thermador cooktop
Thermador built its reputation on the Star burner — a star-shaped flame pattern that spreads heat more evenly across the pan than a round ring — paired with the patented ExtraLow setting that cycles a burner to hold a true melt-and-hold simmer. Those features are what owners love, and they are also the parts that need a specialist: the star burners light through a spark electrode and an ignition module, and ExtraLow depends on a healthy burner valve, a clear orifice and a cycling control that is still in spec.
On the induction side, Thermador’s Freedom and Masterpiece cooktops heat the pan directly through inverter boards and coils, so a dead area or a pan-not-recognized code is an electronics fault, and a surface that derates mid-cook is usually overheating from a blocked cooling fan rather than a failed coil. Whether your unit is a gas Star-burner cooktop, a full-surface induction top, or the burners on a Pro-Harmony range, we diagnose to the exact component before quoting.
Browse the full Thermador repair hub, see all the brands we repair, or call for same-day help.
Common Thermador cooktop problems
If your Star burners or induction zones are doing any of these, we can almost always help — usually on the first visit.
Star burner clicks but won’t light
Thermador’s star-shaped burners light through a spark electrode and an ignition module. Constant clicking with no flame usually means a weak module, a fouled electrode, or a burner cap seated off-center on the star base.
ExtraLow simmer won’t cycle right
The patented ExtraLow setting pulses the burner to hold a true melt-and-hold low. When it flares or stalls, the cause is usually the burner valve, a clogged orifice, or the cycling control drifting out of spec.
Freedom induction zone dead
On a Freedom or Masterpiece induction cooktop the surface heats through inverter boards and coils. A dead area, a fault code, or pans not recognized points to the electronics, which we test before quoting.
Induction surface overheating / derating
A full-surface induction top that derates or shuts down mid-cook is usually protecting itself — a blocked cooling fan or a sensor reading high — rather than a failed coil.
Controls or knobs unresponsive
A dead control knob, a touch panel that won’t register, or a relay that has stuck leaves a burner or zone stuck off or on. We trace the control and switching circuit to the fault.
Gas odor or weak, lifting flame
A faint gas smell, a flame that lifts off the star ports, or a valve slow to open is a safety issue. We pressure-check the manifold and valves and re-set the air-to-gas mix.
Diagnosed to the component
- Star-burner ignition module & electrode service
- ExtraLow valve, orifice & cycling-control repair
- Freedom & Masterpiece induction inverter testing
- Cooling-fan, sensor & derating diagnosis
- Control, knob & relay repair
- Pro-Harmony range burner & oven service
See the full Thermador repair hub, or get a clear repair cost up front.
How a Thermador cooktop repair works
- 01
Call or book online
Tell us the appliance and the symptom. We confirm the soonest realistic visit, often the same day.
- 02
On-site diagnosis
A specialist tests the unit properly and pinpoints the real fault before recommending any part — a flat $89 service call, credited toward the repair.
- 03
Flat-rate quote
You get one clear, written price for the whole repair before any work begins. No hourly meter, no surprises.
- 04
Genuine-OEM repair
We complete the repair with genuine OEM parts matched to your model and serial — usually in a single visit.
- 05
365-day labor warranty
Every repair is backed by a 365-day warranty on our labor, plus a parts warranty.
What Bay Area cooks say
Two of the star burners on our Thermador cooktop clicked nonstop and wouldn’t light. The tech replaced a tired ignition module, cleaned the electrodes, and re-seated the caps on the star bases, and every burner fires on the first try now.
The ExtraLow on our Thermador wouldn’t hold a simmer — it kept flaring and scorching. They serviced the burner valve, cleared the orifice, and reset the cycling control, and now it holds a genuine low for a delicate sauce. Excellent work.
A section of our Freedom induction cooktop went dead and stopped recognizing pans. Instead of guessing, the technician tested the inverter boards and confirmed the bad one, then fitted the genuine part. The $89 service call came right off the bill.
SubZeroBay is an independent appliance repair company. We are not affiliated with, endorsed by, or sponsored by Thermador or BSH Home Appliances Corporation, and we are not a factory or manufacturer service center. Thermador is a registered trademark of its owner, used here only to describe the appliances we service.
Thermador cooktop repair across the Bay Area
From coastal homes in Pacifica to Silicon Valley kitchens in San Jose and the East Bay — wherever you are, we’re a short drive away.
Peninsula
South Bay
Don’t see your city? Call (650) 668-1172 — we may already be nearby.
Thermador cooktop repair — questions
Why won’t my Thermador star burner light?
My Thermador ExtraLow won’t hold a low simmer — can it be fixed?
Do you repair Thermador Freedom and Masterpiece induction cooktops?
Do you also work on Thermador ranges and wall ovens?
Star burner or zone out? Fixed today.
Same-day Thermador cooktop and range repair across the Bay Area. $89 service call, credited to the repair, with a 365-day labor warranty.