Regardless of which vent you're messing with, remember that open vents mean hotter and faster-burning charcoal. Closed vents mean less oxygen, which in turn means less heat and slower-burning charcoal. Now that you know about vents, the world—or at least your grill and the small area surrounding it—is yours.
The Reality: Repeatedly lifting the lid with a gas grill will cause it to lose heat, making your food sear and cook more slowly. Repeatedly lifting with a coal grill will do the opposite, allowing in oxygen that causes the coals to bun hotter than you'd like them to, resulting in burnt meat.
Adjusting the air dampers will increase or decrease your temperature. The more air going into the grill, the hotter the grill will get. The less air going into your grill, the cooler it will get.
Never fully close your top or bottom vents while cooking. It will smother your coals and leave a foul flavor on your food. Only fully close all vents when shutting down your grill.
Closing the lid will increase the temp of the meat quicker since it will make the grill more like an oven. So if you only want to sear then leaving the lid open is perfectly fine. If you want to bring the temp of the meat up then closing the lid would be it.
With the lid open, you get precise control over the heat hitting one surface of your food; with the lid closed, you still have the heat acting on the bottom of the food, but it also picks up heat from the air surrounding it, which can lead to mixed results.
Thin pork chops, shrimp, and burgers tend to cook quickly. Leaving the grill lid up will slow the cooking process by reducing the temperature around the meat. For thicker cuts, you want to close the lid to keep the temperature high and even.
To reduce the temperature: Close the vents on your grill to reduce the flow of oxygen. To increase the temperature: Open up the vents fully to allow more oxygen in to increase the flames.
Fresh air acts as fuel by providing the burning wood or charcoal with additional oxygen. As the oxygen feeds the fire, your grill will become hotter. So, remember to open the dampers to achieve the hottest temperature when grilling.
Keep the appliance door closed when using the grill. Never grill with the appliance door open as leaving the door open causes excessive heat to the fascia which may melt the appliance knobs. Place the food to be grilled on the wire rack.
There are several, easily fixable, reasons that your gas BBQ isn't burning hot enough. Not opening the gas valve all the way, clogged burners, malfunctioning regulators, and empty propane tanks are the most common reasons. Cold weather and wind may also play a part in your barbecue's performance too.
The lid vent should be open and your coals should be evenly distributed. This method is used for items that will take 20 minutes or less to barbecue, like steaks, burgers, chops, sausages and vegetables. It is also an excellent way to sear food and create that nice crisp, caramelised texture.
Snake Method
Great for low and slow cooking, think beef short ribs, pork ribs or brisket! The 'snake' method consists of a series of unlit briquettes, 2 rows wide and placed at a 45 degree angle around half your barbecues circumference.
We use a combination of the top and bottom vent to control the amount of air that is flowing through the grill. The more air flowing through the grill, the hotter the grill will get.
Flip your meat often. This prevents the meat from cooking too much on one side. It is best to flip your meat at least 3 times so each side is over the heat twice. Move your meat off of the hot spot of the grill if you notice a hot spot.
Bottom Vents
The more air, the hotter the fire. The less air, the cooler the internal temperature of the grill. No air and the fire goes out. On my Weber kettle, I always start with all three bottom vents open.
Clean your grill thoroughly, removing any debris or grease build up that might be blocking the vents. Check the burner dampers, also known as air filters, and ensure they're open wide enough to allow air to enter the flow in freely. Avoid overcrowding the grill with too much food, as that can also impede airflow.
There are a few things you can do to make your BBQ burn hotter: -Clean the grill before cooking to get rid of any built up residue. -Preheat the grill for at least 15 minutes before adding food. -Place the food on the hot side of the grill and close the lid to trap in heat.
They pull air into the BBQ and provide fuel to the fire. This works in the same way as a chimney or the charcoal starter, the heat will create an updraft, sucking in more air. The top vents, called the exhaust dampers vent smoke and heat away from the dome of the lid.
Use your grill vents to adjust the temperature
You can manipulate your grill's temperature by simply using the top and bottom grill vents. Located on the lid itself and on the very bottom of the base, the vents control the airflow through the grill, and the wider open they are, the hotter it's going to get.
The Lower Vent or Intake Damper
Fire needs oxygen to continue burning. If you close off the supply then the fire will simply burn out. The more you open this vent, the more oxygen (or fuel for the fire) will enter the grill and the temperatures will soar.
When you barbecue with the lid closed, it creates a lovely convection effect, allowing hot air to circulate inside the BBQ, much like an oven. This helps cook the inside of your food perfectly. If you keep the lid open, you can sear thinner foods nicely without worrying about overcooking the centre.
Other than occasionally checking the temperature, leave the patties alone once they hit the grill, aiming for one single flip halfway through the cook time. Resist the urge to press on the patties, which can cause flare-ups and lead to dry burgers, and you won't be sorry.
When grilling thin steaks, hot dogs, or quick-cooking foods like sliced vegetables, using the lid open can be more appropriate. The direct heat from the open flames sears the exterior quickly, giving you that coveted char while preserving the juicy center of the meat.