The main factor to consider before determining what size barbecue you need is the number of people you wish to cook for. With gas barbecues, you have the a range of BBQs with different numbers of burners to choose from. When cooking for two to three people, a 2-burner BBQ should suffice. For medium crowds, it’s recommended to use 3 to 4 burners, and for larger groups, you can consider a 6-burner BBQ. You should also consider how much food you plan to be cooking on your BBQ. The number of burners your gas barbecue has also determines your capacity for direct and indirect grilling (i.e. cooking directly over the flame, or to the side). For example, with a two-burner model, you can simply turn down or switch off one burner and place food over the side that is switched off. A four-burner model gives you even more options – you can switch off two or even three burners and use that space for indirect grilling.