David Carter Key Takeaways
- Star Burner igniter replacement is the most frequently performed Thermador range repair and is cost-effective.
- Error code E1 on Thermador ranges points to an igniter circuit fault that requires professional diagnosis.
- Dual-fuel Pro Grand ranges have both gas and electric circuits to service, which can increase labor time.
- Control board replacement is the most expensive common range repair, but boards can often be rebuilt rather than replaced.
- ExtraLow simmer valve service is unique to Pro Grand models and requires a technician familiar with the dual-valve system.
The Bottom Line
Thermador range repair cost starts from $140 for an igniter swap and reaches from $420 for control board work on Pro Grand dual-fuel models. Ranges that retail from $5,000 to $12,000 make even the highest repair costs economically sensible.
Thermador Range Repair Cost: Understanding the Variables
Thermador range repair cost depends on three factors: which model you own, which component has failed, and whether the issue involves the gas system, the electric circuit, or both. Pro Grand and Pro Harmony ranges share the same Star Burner platform but differ in size options, BTU output, and the Pro Grand's exclusive ExtraLow dual-valve simmer system. Knowing which model you own before calling for service allows the technician to arrive with the right parts.
Range Repair Cost by Component
| Repair Type | Typical Cost | Related Code | Notes |
|---|---|---|---|
| Star Burner igniter replacement | from $140 | E1 | Most common range service |
| Igniter spark module | from $165 | E2 | Controls one or all burners |
| Oven temperature sensor | from $155 | E3 | Quick replacement when confirmed |
| Bake or broil element (dual-fuel) | from $185 | None | Pro Grand dual-fuel only |
| ExtraLow valve service (Pro Grand) | from $210 | None | Unique to Pro Grand models |
| Main control board | from $420 | Multiple | Board rebuild possible in some cases |
Pro Grand Dual-Fuel: Higher Complexity, Higher Labor
Pro Grand dual-fuel ranges combine a gas cooktop with an electric convection oven, creating two separate high-voltage circuits that must be isolated before service. This adds ten to fifteen minutes of setup time to every repair visit compared to an all-gas Pro Harmony. If your dual-fuel Pro Grand needs both a burner repair and oven element service in the same visit, the combined labor is more efficient than two separate calls, and many technicians discount the labor for the second repair when combining work.
When Repair Makes Sense vs. Replacement
Pro Grand ranges retail from $5,000 to over $12,000 depending on size and configuration. Pro Harmony ranges start from around $4,500. At these price points, repairs up to $1,500 represent less than 30% of replacement cost — well within the range that repair specialists and consumer advocates agree represents sound economics. The only scenario where replacement deserves serious consideration is a main control board failure on an older unit where the board is discontinued and the repair cost approaches the value of the range itself. Our Thermador range repair service always advises on parts availability before proceeding with board replacements.
Reducing Future Range Repair Costs Through Maintenance
Star Burners benefit from regular cleaning to prevent the port clogging that leads to ignition calls. After any significant boilover, remove the burner caps and wipe down the burner bases with a damp cloth before the residue hardens. On Pro Grand models, clean around the ExtraLow simmer orifice carefully — a toothpick is sufficient to clear debris from the tiny opening. For the oven cavity, avoid lining the bottom with foil, which blocks convection airflow and can cause the temperature sensor to read inaccurately, accelerating wear on the heating elements. A technician who visits for a simple igniter replacement can also perform a quick visual inspection of the oven cavity, burner wiring, and ExtraLow valve at no additional charge — ask specifically for this when booking.