What heat plates are called
Every brand names them differently. Weber calls them Flavorizer bars. Others call them heat tents, flame tamers, heat shields, vaporizer bars or radiant plates. Some premium built-ins use ceramic briquettes in a tray, or a full-width radiant plate with holes. They're all doing the same thing: catching drips before they hit the burner and turning burner flame into more even radiant heat.
Usually made of stainless steel, porcelain-enameled steel or ceramic, they take direct flame from below and grease from above every cook. They're a wear part, like brake pads.
Signs they need replacing
- Holes, slots or rusted-through spots, especially along the peak.
- Plates that sag, warp or no longer sit flat in their supports.
- Porcelain coating chipping off, exposing rusting steel underneath.
- Cracked or crumbling ceramic briquettes.
- More flare-ups than you used to have, especially directly over the burners.
- Burners showing grease damage underneath worn plates.
Why they wear out
Most common causes first.
Grease buildup
Baked-on grease holds moisture and acids against the metal and rusts it from the top down.
Learn moreHeat cycling
Heating and cooling hundreds of times eventually warps thinner plates.
Salt air
Coastal grills see faster corrosion on plates, especially porcelain-coated steel once the coating chips.
Learn moreCheap replacements
Thin universal plates that don't fit right sag and burn through quickly.
Hard cleaning
Wire brushes and scrapers chip porcelain coatings and start rust.
What you can safely do
Heat plates are one of the few grill parts most owners can safely replace themselves. With the grill off and cool, lift the grates, lift out the old plates, and drop in the new ones. That's usually it. The important part is getting the right size and shape for your grill, so take measurements or use the model number. Our model number guide helps.
While the plates are out, it's a good time to look at the burners underneath. If the burners are rusted or the ports look uneven, see our burner replacement page. Make sure the burners are still seated on their orifices before you put the plates back. If you're not sure, leave it and call.
How we replace heat plates
- 1
Match the parts
We match plates to the model by length, width, profile and mounting. On discontinued grills we measure and find the closest true fit.
- 2
Clean the firebox
Old plates come out and the firebox, burners and grease path get cleaned so the new plates don't sit in old grease.
- 3
Check the burners
Burners under worn plates often have grease damage. We check them and replace any that are failing.
- 4
Install and test
New plates go in, seated properly. We light the grill and confirm heat is even.
OEM vs. universal plates
Universal adjustable plates are sold for nearly every grill, and they do work on some. On many premium built-ins from brands like Lynx, DCS and Fire Magic, the original plate design affects how heat spreads, and a generic plate changes it. We prefer OEM where available. Our parts guide goes into the trade-offs.
Heat plate questions
How often should heat plates be replaced?
There's no set interval. Thicker stainless plates can last many years with regular cleaning. Thin or porcelain-coated plates often need replacing every few seasons, faster near the coast.
Can I cook without heat plates?
You shouldn't. Without them, grease drips straight onto the burners, causing flare-ups and burner damage, and heat becomes much less even.
Are ceramic briquettes better than metal plates?
They hold and radiate heat well but crack and absorb grease over time. Neither is better in every case. It depends on the grill design.
Will new plates fix my uneven heat?
If the old ones were warped or damaged, often yes. If the cause is clogged burners or orifices, plates alone won't fix it.
How much does heat plate replacement cost?
It depends on the brand, number of plates and whether parts are OEM. Send photos and your model number for a quote.
Related guides
BBQ Grill Repair
On-site repair for gas grills: ignition, burners, valves, regulators, gas leaks and the hardware that wears out, with common parts carried on the truck.
TroubleshootingSigns Your Burners Need Replacing
How to tell a dirty burner from a worn-out one, with flame patterns to watch for and a safe way to pull and inspect them.
Buying adviceOEM vs. Universal Grill Parts
Which grill parts are fine to buy universal, which should always be original, and how to measure so a replacement actually fits.
Care & how-toHow Often Should You Clean Your Grill?
A realistic cleaning schedule for gas grills in LA: what to do after every cook, once a month, and once or twice a year, and what shortens the interval.
Heat plates rusted through?
Call or text us, or send photos with the grates off. We'll match the right plates and check the burners underneath.