Furnace burner question

Inspecting a newer furnace there was white deposits on a metal grate Inside the burner tubes. When the furnace was on the white substance on the metal grate would light up red hot
Any idea what the white deposits are? And what the grate is for?

displaced nox emission reducers
if in a low or ultra low nox region advise repair
if not advise repair so warranty stays in tact & mfr doesn’t have an escape clause due to pre-damaged unit


The metal insert causes turbulence to increase residency to improve efficiency. The white is probably zinc oxide.

My goodness Berry.
Please learn to use capitalization and commas. LOL
I’m going to catch it from Barry on this one. No Doubt !

grammar police …really ?

I’m just messing with Barry

I knew that…

However You should know Barry doesnt play well with others…If He decides to send "his people " to visit You…well …just sayin…

the peeps

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He’s a hobo. And I like him.
Any other questions?