Three Burners or Five
A three-burner grill at 36,000 BTU covers ordinary cooking, because three independent zones are enough for a hot side and a cool side. The five-burner combination at 74,000 BTU is not a bigger grill - it is a grill, a griddle and a pizza oven sharing one frame.
Side by side
| Three-burner | 3-in-1 combo | |
|---|---|---|
| Total output | 36,000 BTU | 74,000 BTU |
| Burners | 3 | 5, plus a side burner |
| Side burner | Side stove | Yes |
| Griddle | No | Yes |
| Pizza oven | No | Yes |
| Grates | Cast iron | Porcelain-enamelled cast iron |
Why 74,000 is not twice the grill
Output is sized to cooking area. Five burners heat a larger surface plus a griddle, so the figure has more to do. Divided by the area it serves, the two units are closer than the headline numbers suggest - which is the point made in what BTU actually tells you.
What the combination is really for
The griddle. A flat plate cooks eggs, onions and everything small enough to fall through a grate, which a grill simply cannot handle. Anyone weighing this against buying a grill and a griddle and a pizza oven separately is comparing one purchase against three, and three places to put them.
Which constraint decides
Household of two to four, ordinary cooking: the three-burner. Three zones is enough, and five burners are five things to clean.
Regular groups, or the griddle matters: the combination.
Pizza specifically and nothing else: neither - the portable oven does that job better and moves.
Questions
Is 36,000 BTU enough for a grill?
For everyday cooking, yes. Three independently controlled burners give a hot zone and a cool zone, which is what most cooking needs.
What does the griddle add?
A flat surface for eggs, onions and anything that falls through a grate.
Which is better value?
It depends what you would otherwise buy. Against three separate appliances the combination is one purchase; against a grill alone it is more than needed.