Honeywell ST9120U1003 Furnace Control Circuit Board - Used, Tested, Working Pull #D354

Alright, so you're tracking down a Honeywell ST9120U1003 furnace control board?

We've got a solid used one here, pulled from a working unit.

It's in excellent shape both cosmetically and functionally, so you can trust it's ready to go back to work.

This is a genuine Honeywell part, model number ST9120U1003 (also matches MPN ST9120U 1003).

It was professionally removed, so no sketchy backyard job here.

If you need a reliable replacement for your furnace without paying for brand new, this is a great option.

Just a heads up, it's used, but we've been super picky about the condition.

Perfect for a repair or as a backup.