The SGS305FS is the plain version of Thermador’s 30-inch five-burner gas cooktop: no ExtraLow function, just 52,000 BTU on natural gas with a 16,000 BTU burner in the middle. It suits a smaller kitchen where a 36-inch cutout would not fit, and it comes with three cast iron pan supports that have to sit correctly for the burners to work.
One of the first things we look at is the seating of the burner caps and grates. A cap that is a few degrees off can make a burner light poorly or burn unevenly. Then we test the igniters, flame pattern and gas supply, including the shutoff and flex connector under the cabinet.
Thermador names SGS305TS as the successor for this number. We match your rating plate before ordering parts.
The cap should sit flat and not rock. Lift it, wipe the base and set it back; if the flame is still uneven, call us.
It is not in the listed specifications for this number. The lowest flame is controlled by the standard valve.
Any lasting gas smell should be treated as urgent. Close the shutoff, ventilate, and call us or your gas utility.
Request a visit online in about a minute or phone our coordinators. Close-in neighborhoods often see a same-day slot; the outer counties usually get the next day across Houston.