The PRG305WH is the 5-burner sibling of Thermador’s 30-inch all-gas Pro Harmony® range, adding a center burner to the cooktop while keeping the same 4.4 cu ft single oven cavity and 24-inch standard cabinet depth as the 4-burner PRG304WH. The extra burner changes the grate layout – two continuous grates span all five burners instead of individual grates per burner – which is worth checking first on any complaint about a wobbly or misaligned grate.
As with the 4-burner version, this range has no dual-fuel electric oven and no Home Connect WiFi, so troubleshooting is entirely manual: burner-by-burner ignition checks, then oven bake and broil performance against the dial. If a burner won’t light and there’s any smell of gas, shutting off the gas supply to the range is the first step, before touching the igniter or burner, and that shutoff should always come before any other safety action on this model.
Key Features
- 30'' Pro Harmony® all-gas range with 5 open Pedestal Star® burners, including a center burner
- 80,000 total BTU across the cooktop; ExtraLow® simmer capability
- 4.4 cu ft single oven cavity with 4 cooking modes: Roast, Bake, Convection Bake, Broil
- 2 continuous cast-iron grates spanning the 5-burner layout
- 120V/15A connection; this model is not Home Connect WiFi-enabled
Most Common Issues on This Model
Center burner not igniting or not holding a flame
Igniter clicking without lighting on one or more burners
Oven temperature drifting from the dial setting
ExtraLow simmer burner cycling incorrectly, running too hot or extinguishing
Grate instability or uneven seating across the 2-piece continuous grate