Onlyfire Grills GS309
- Grill
- 315 sq in
- Propane
- Freestanding
- More reviewed than 76%
A compact 3-burner propane grill with a 4.3-star average, a reasonable pick for small-space or occasional use, though its cooking area stays modest for a three-burner unit.
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How it ranks among the 261 grills we track
4.3★ across 198 Amazon ratings, Bayesian-smoothed toward the category average.
198 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 261 grills we track - how the scorecard works · full grills data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Onlyfire Grills GS309 is a freestanding, 3-burner propane grill with 315 square inches of cooking area, built in stainless steel with a silver finish. It weighs 47 pounds and measures 14 by 23.6 by 14.5 inches.
Three separate burners let a cook run different heat zones even on a grill this compact, useful for holding food warm on one side while searing on another. At 14 by 23.6 by 14.5 inches, the GS309 is smaller than most full-size backyard grills, which likely limits its cooking area more than its burner count would suggest.
- Fuel type: propane
- Burners: 3
- Cooking area: 315 sq in
- Material: stainless steel
Who it's for
Suits buyers who want a compact, freestanding 3-burner propane grill for a small patio, balcony or tailgate setup rather than large-batch cooking. Less suited to anyone regularly grilling for a crowd, since 315 square inches is modest for three burners.
Strengths and trade-offs
Drawn from this product's published specifications.
- Three burners allow separate heat zones
- Stainless steel resists rust
- Freestanding, no cart or built-in installation needed
- Cooking area is modest for a 3-burner grill
- At 47 lb, heavier than a typical tabletop grill
Performance notes
Splitting 315 square inches across three burners gives finer heat-zone control than a single-burner grill of the same size, letting you sear over high heat while keeping another zone lower. Stainless steel resists rust better than painted steel over time outdoors, and the freestanding design means it doesn't need a cart, side table or built-in surround to use.
Specifications
| Brand | Onlyfire Grills |
|---|---|
| Model | GS309 |
| Dimensions & fit | |
| Weight | 47 pounds |
| Dimensions | 14 × 23.6 × 14.5 inches |
| Power & efficiency | |
| Fuel Type | Propane |
| Construction & materials | |
| Material | Stainless Steel |
| Color | Silver |
| Compatibility & installation | |
| Install Type | Freestanding |
| Other details | |
| Cooking Area | 315 sq in |
| Burners | 3 |
Other Onlyfire Grills grills
How it compares
This product against the closest alternatives we track in grills.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Onlyfire Grills GS309This product | 4.3 / 5 | 198 | 3.6 / 5 |
| Cuisinart CGG-306 GrillCuisinart | 4.4 / 5 | 6,848 | 4.4 / 5 |
| Brand 51060001 GrillBrand | 4.8 / 5 | 8,200 | 4.1 / 5 |
| Charbroil 463253925 GrillCharbroil | 4.5 / 5 | 13,429 | 4.0 / 5 |
| Elite Gourmet EMG6505G GrillElite Gourmet | 4.5 / 5 | 12,747 | 4.0 / 5 |
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Questions about the Onlyfire Grills GS309
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How many burners does the GS309 have?
Three.
What is the cooking area?
315 square inches.
What fuel does it use?
Propane.