The SGC365 is a 36-inch sealed-burner gas cooktop distinguished by its full-surface grates, which span across multiple burners as a continuous surface rather than Thermador’s individual pedestal-style grates. It was also offered as the SGCS365, which adds 2 ExtraLow burners for low simmering, and could be paired with an accessory griddle (Model AGGRIDDLE) that sits across the burner grates.
Because the grates on this model are shared across burners and labeled for correct front-to-back placement, a wobbly pan or uneven heating is often simply a misplaced or reversed grate rather than a burner problem; beyond that, this cooktop’s mechanical ignition and burner troubleshooting follows the same pattern as Thermador’s other sealed-burner gas cooktops.
Key Features
- 36-inch sealed-burner gas cooktop with full-surface grates spanning all burners
- Standard (non-ExtraLow) sealed burners; SGCS365 variant adds 2 ExtraLow burners
- Steel cooktop surface
- Optional accessory griddle (Model AGGRIDDLE)
- Electronic reignition
Most Common Issues on This Model
If you smell gas, shut off the gas supply at the shutoff valve first before checking the burner or igniter.
Because this design uses continuous grates spanning multiple burners rather than individual grates per burner, make sure grates are correctly positioned front-to-back (marked underneath) - a misplaced grate can cause pans to rock or sit unevenly.
On the SGCS365 ExtraLow variant, a burner that won't hold a low simmer typically points to that burner's control knob rather than a supply issue.

