Weber Charcoal Heat Controller for 22" Kettle Grills — Cone & Diffuser for Searing and Low-and-Slow

The Weber Charcoal Heat Controller for 22" kettle grills is a two-piece cone and diffuser plate system that converts your kettle into a versatile cooker for both high-heat searing and reliable low-and-slow smoking.

If you own a 22-inch Weber kettle, this accessory simplifies temperature control and expands what your grill can do. The cone focuses and channels heat for intense direct searing while the ring-shaped diffuser creates a broad indirect zone, letting you hold steady low temperatures for long cooks without constant refueling. Built to fit inside standard 22" kettles, the assembly also leaves room for a water pan and can be broken into four parts for cleaning or compact storage.

How does the Weber cone-and-diffuser make low-and-slow easier?

The diffuser ring spreads heat evenly around the cooking grate, turning the kettle into an indirect smoker with stable temperatures. With charcoal briquettes you can expect multiple hours of steady heat, reducing the need to tend coals frequently.

• Provides consistent 225°F–275°F range for long cooks
• Fuel-efficient design offers up to about 7 hours per load of briquettes
• Room for a water pan to help maintain moisture during extended cooks

Can I still get a strong sear when the heat controller is installed?

Yes — the cone concentrates and accelerates heat beneath a focused zone, creating very high direct temperatures ideal for searing steaks and crisping skin. You can switch between direct and indirect cooking by moving food or adjusting vents.

• Generates intense direct heat for quick searing
• Convection-style heat crisps wings and vegetables effectively
• Works with standard charcoal arrangements for flexible setups

How much cooking space and flexibility does the diffuser provide?

The diffuser ring maximizes the usable area of a 22" cooking grate for indirect cooks, so you can fit larger cuts like pork shoulder or multiple racks of ribs. The removable four-piece design also enables varied configurations and easier cleaning or storage.

• Expands indirect cooking area across most of the 22" grate
• Four-piece construction disassembles for cleaning or compact storage
• Leaves space for larger items and a water pan to add moisture

Who is this Weber accessory best for? This heat controller suits backyard grillers who want more control without learning complex smoking techniques, home cooks looking to add authentic low-and-slow capability to a classic kettle, and experienced users who want a compact solution for alternating between searing and long smokes. It’s especially useful for cooks who value fuel efficiency, predictable temperature ranges, and the ability to handle large cuts or multiple items at once.