Cooktop · Thermador · 7 min read

Thermador Cooktop Repair Cost — Star Burner & Freedom Induction | Northern Virginia

Quick answer

Thermador cooktop repair in Northern Virginia typically costs $150–$600 depending on the fault and platform. Gas Star Burner repairs: spark electrode tip $80–$160 each; spark module $150–$280; ExtraLow simmer module $180–$350; Star Burner head (cracked/warped) $120–$200 each; surface valve $150–$260; OEM igniter assembly $250–$480; control board $320–$600. Freedom Induction repairs: per-zone IGBT inverter board $220–$400; induction coil assembly $280–$480; touch control overlay $180–$320; control board $320–$600. Against a $1,800–$4,000 Masterpiece or $4,500–$6,500 ProGrand cooktop replacement cost, even a $600 control board repair is under 34% of replacement — repair wins at virtually every age.

Thermador cooktops are sold in two architectures across Northern Virginia — the gas Star Burner platform (Masterpiece SGSX/SGDX, ProHarmony PCG, ProGrand PRG) and the Freedom Induction platform (CIT/CI/CIU series). The Star Burner's five-pointed design requires OEM parts to maintain its flame distribution geometry; the Freedom Induction platform uses per-zone IGBT inverters sourced from BSH but calibrated to Thermador-specific firmware. When a Star Burner won't ignite, an ExtraLow zone loses simmer control, or an induction zone goes dark, the repair cost depends on which component has failed — and whether the platform is gas or induction. This guide provides part-by-part repair cost ranges, explains why Thermador cooktop components cost more than standard parts, and gives you the repair-vs-replace math for a $1,800–$6,500 appliance.

Why Thermador cooktop repair costs more than a standard cooktop

Thermador cooktops — whether gas Star Burner or Freedom Induction — share three engineering characteristics that make parts and service more expensive than a standard residential cooktop. (1) The Star Burner igniter and burner head are Thermador OEM-only components. The Star Burner's five-pointed burner design requires a precise gap between the electrode tip and each of the five burner slots for reliable ignition. Aftermarket igniter assemblies machined to different tolerances misfire on one or more slots, producing intermittent ignition or a clicking-without-flame fault. Thermador OEM igniter assemblies — matched to the ProGrand or Masterpiece burner head geometry — carry a higher price than generic appliance igniters but are the only components that restore reliable Star Burner ignition. OEM igniter assembly: $250–$480 depending on the model and burner size (standard vs Power Burner vs ExtraHigh). (2) The ExtraLow simmer module is a Thermador-proprietary thermostat system. Thermador's ExtraLow feature delivers a continuous hold temperature as low as 100°F by cycling the burner between a small flame and a pilot-like hold position on a precise timing circuit. The module that controls this cycling — the ExtraLow thermostat assembly — is Thermador-specific; no generic simmer ring or simmer plate replicates the ExtraLow on/off timing behavior. An ExtraLow module that fails typically presents as a burner that will not stay on at low settings or extinguishes when turned to the lowest position. OEM ExtraLow module: $180–$350 depending on the series (ProHarmony vs ProGrand). (3) Freedom Induction IGBT inverter boards are per-zone and Thermador-firmware-calibrated. Thermador's CIT and CI Freedom Induction cooktops use a per-zone IGBT (insulated-gate bipolar transistor) inverter board rather than a shared inverter powering all zones from one board — as found on many lower-cost induction platforms. A failed zone on a Thermador induction cooktop therefore requires replacement of the individual zone inverter rather than the entire power board, which keeps single-zone repair costs lower — but the inverter is Thermador-calibrated and must be sourced as OEM to match the control board's zone-communication protocol. Per-zone IGBT inverter: $220–$400.

Thermador cooktop repair costs — part by part (gas and induction)

Gas Star Burner platform (Masterpiece SGSX/SGDX, ProHarmony PCG, ProGrand PRG): (1) Spark electrode tip — the ceramic-tipped electrode that delivers high-voltage spark to the burner well. Electrode tips crack from thermal cycling or mechanical impact (dropped lid, boilover ceramic shock). Each burner has one electrode; a surface with four or six burners may have multiple failed electrodes. Replacement per electrode: $80–$160. (2) Spark module (spark generator board) — the high-voltage control board that fires all burners simultaneously when any knob is turned to Lite. A failed module produces no clicking on any burner, or continuous clicking on all burners even with knobs off. Replacement: $150–$280. (3) Star Burner head (cracked or warped) — the cast brass or enameled five-pointed burner head that distributes gas to each slot. A cracked burner head produces uneven flame, one or more slots that won't light, or a flame that blows sideways. Replacement per head: $120–$200. (4) ExtraLow simmer module — the Thermador-proprietary thermostat that enables sub-140°F hold temperatures. Failure presents as burner extinguishing at lowest setting or inability to hold simmer. OEM module: $180–$350. (5) Surface burner valve — the individual gas valve controlling flow to one burner. Valve failure produces a burner that stays on after the knob is turned off, won't turn on, or produces gas smell without ignition. Replacement per valve: $150–$260. (6) OEM Star Burner igniter assembly (full) — complete igniter unit including electrode tip, ceramic insulator, and mounting bracket, sourced as a Thermador assembly. Used when electrode tip replacement alone does not resolve ignition. Replacement: $250–$480 per assembly. (7) Control board (gas) — the main logic board that manages burner sequencing, ExtraLow timing, and surface-level error codes. Failure presents as all knob-turn events unresponsive or continuous clicking fault. Replacement: $320–$600. Freedom Induction platform (CIT301T, CIT365T, CI301T, CIU301T, Masterpiece Induction): (8) Per-zone IGBT inverter board — controls power delivery to one induction coil. A zone that produces no heat, displays E15/E20, or shows uneven boil behavior typically has a failed zone inverter. Replacement per zone: $220–$400. (9) Induction coil assembly — the copper-wound coil beneath the glass that generates the alternating magnetic field. Coil failure from overheating or physical impact produces a zone that generates no heat even with a correctly detected pan. Replacement per coil: $280–$480. (10) Touch control overlay — the capacitive touch panel on Freedom Induction models. A non-responsive zone control or a panel that registers phantom touches has a failed touch overlay. Replacement: $180–$320. (11) Control board (induction) — the main board managing all zone communications, power bus distribution, and E-code diagnostics. Replacement: $320–$600.

Thermador Masterpiece vs ProHarmony vs ProGrand vs Freedom Induction — repair cost differences

Thermador's cooktop lineup spans four platforms in Northern Virginia, and repair cost profiles differ by series and surface size. (1) Masterpiece gas (SGSX305, SGSX365, SGDX) — the most common Thermador cooktop in McLean and Great Falls kitchens. 30-inch and 36-inch all-gas surface, four or five Star Burners, ExtraLow on select burners. Part costs are the same as ProHarmony; the difference is the number of burners (4 vs 5 vs 6) and whether the ExtraLow module is present. Replacement: $1,800–$3,600 depending on size. (2) ProHarmony (PCG305, PCG366) — the mid-range sealed-burner gas platform. Six-burner 36-inch surface is the most common ProHarmony configuration; ExtraLow standard. Parts are identical to Masterpiece series on the same burner count. Replacement: $2,000–$3,200. (3) ProGrand (PRG486, PRG606) — the highest-power gas cooktop, up to six Star Burners on a 48- or 60-inch surface, with an optional griddle center section. ProGrand spark modules and valve assemblies are sized to high-BTU burners; Thermador OEM-only sourcing applies at every part tier. Control board replacement on the ProGrand runs $450–$700 (higher than Masterpiece due to the more complex multi-burner logic). Replacement: $4,500–$6,500 (48-inch) to $7,000–$9,500 (60-inch). (4) Freedom Induction (CIT, CI, CIU) — Thermador's induction platform. Per-zone IGBT inverter design means a single-zone failure is diagnosable and repairable without replacing the entire induction unit. A four-zone 30-inch CIT cooktop with one failed zone costs $220–$400 to fix, not $2,000–$3,000 to replace. Touch-panel control overlay is the next most common failure ($180–$320). Glass-ceramic cracking from impact is the one repair that is not cost-effective — replacing the glass on a Freedom Induction unit approaches or exceeds replacement cost; physical glass damage is a replacement scenario.

Thermador cooktop repair vs replace — the economic math

Thermador cooktops are designed to last 15–20 years under normal use. The repair-vs-replace decision is straightforward for most faults. On a 36-inch Masterpiece gas cooktop ($2,400–$3,600 new): a Star Burner OEM igniter assembly ($250–$480) is 7–20% of replacement; an ExtraLow module ($180–$350) is 5–15%; a control board ($320–$600) is 9–25%. Even a worst-case combination — control board plus two full igniter assemblies — totals $820–$1,560, which is 23–65% of a mid-range Masterpiece. At the low end of that range, repair is clearly the right call; at the high end, appliance age and condition weigh in. On a ProGrand 48-inch ($4,500–$6,500 new): the same repair arithmetic produces lower percentages — a $600 control board is 9–13% of replacement; two igniter assemblies plus a control board ($1,220–$1,560) is 19–35% of replacement. ProGrand repair is almost always the right call at any age before 18 years. On a 36-inch Freedom Induction ($2,800–$4,000 new): a single zone IGBT repair ($220–$400) is 6–14% of replacement; a control board ($320–$600) is 8–21%; two zone IGBT failures plus a control board ($760–$1,400) is 19–50% of replacement. The one exception across all platforms is cracked glass on an induction model — glass replacement cost on Freedom Induction approaches the unit replacement cost, making glass damage the rare case where replacement is the right answer.

When to Call a Specialist

Commonwealth Appliance Repair services Thermador Star Burner gas cooktops (Masterpiece, ProHarmony, ProGrand) and Freedom Induction cooktops across McLean, Great Falls, Bethesda, Potomac, Arlington, Fairfax, Falls Church, Chevy Chase, and all of Northern Virginia and DC. We carry OEM Thermador Star Burner igniter assemblies, ExtraLow modules, and per-zone IGBT inverter boards on the truck. Same-day diagnostic service. 90-day parts and labor warranty. Call (571) 571-1664 for an upfront repair estimate before any work begins.

Call (571) 571-1664 Cooktop & Stove Repair in NoVA & DC

Frequently Asked Questions

How much does Thermador cooktop repair cost in Northern Virginia?

Thermador cooktop repair in Northern Virginia typically costs $150–$600 depending on the fault. Gas Star Burner: spark electrode $80–$160 each; spark module $150–$280; ExtraLow module $180–$350; OEM igniter assembly $250–$480; control board $320–$600. Freedom Induction: per-zone IGBT $220–$400; coil assembly $280–$480; control board $320–$600. Our diagnostic fee ($99) is credited toward the repair. Call (571) 571-1664.

Is a Thermador cooktop worth repairing?

Yes — at almost any age. A 36-inch Masterpiece gas cooktop costs $2,400–$3,600 new; even a $600 control board repair is under 25% of replacement. A 48-inch ProGrand costs $4,500–$6,500 — the same board repair is 9–13%. Freedom Induction single-zone IGBT repair ($220–$400) is 6–14% of replacement. The only exception is cracked glass on an induction model. Call (571) 571-1664.

My Thermador Star Burner won't ignite — how much does it cost to fix?

A Thermador Star Burner ignition fault typically costs $150–$480 to repair. Moisture in the electrode well or debris in the burner slots resolves at no parts cost — just cleaning. If the spark electrode tip is cracked: $80–$160 each. If the spark module has failed (no clicking on any burner): $150–$280. Full OEM igniter assembly: $250–$480. Diagnostic fee ($99) credited toward repair. Call (571) 571-1664.

How much does Thermador Freedom Induction cooktop repair cost?

Thermador Freedom Induction cooktop repair in Northern Virginia typically costs $220–$600. A single-zone IGBT inverter failure costs $220–$400 per zone. An induction coil assembly costs $280–$480. A touch control overlay (non-responsive panel) costs $180–$320. Control board: $320–$600. Against a $2,800–$4,000 replacement cost, any single fault is under 21%. Call (571) 571-1664 for same-day service.