ICON System is Bradford White's diagnostic-LED upgrade of the Defender chassis. Same atmospheric gas tank with intake filter, plus an intelligent gas control system that flashes fault codes via LED and stores fault history.
The ICON System lineup
- ICON 50G (M2I504T6FBN) — 3-4 person households (volume pick)
- ICON 40G (M2I404T6FBN) — 2-3 person households
What ICON adds
- Diagnostic LED: flashes fault codes (1-8 flashes — see our error codes hub)
- Software-controlled inducer — better combustion management
- Fault-code memory — service tech can pull recent fault history
- Same intake filter as Defender (annual cleaning required)
- Same 6-year warranty (10-year upgrade)
ICON vs Defender
ICON adds ~$100-$200 to Defender pricing for the diagnostic LED. Worth it if you want faster service diagnostics — the LED tells the plumber the failure mode before they open the unit. For homeowners who don't care about diagnostics, Defender is the same chassis at lower cost.
Bottom line
ICON is the diagnostic-LED upgrade of Defender. For full warranty / parts info see warranty hub and parts hub.