# Fire detection & suppression

Part ID: 6.09 · Layer 6 (Facility cooling & HVAC)

Smoke and heat detection systems and fire suppression equipment — agents, piping, and discharge nozzles — that protect the data hall and electrical rooms.

Covers early-warning detection (6.09a), including aspirating smoke detection that can sense a fault before visible smoke appears, and suppression hardware (6.09b) that discharges an extinguishing agent (6.09c) into a data hall or electrical room without damaging electronics — which rules out water-based suppression in the white space in favor of clean gaseous or inert-gas agents. The agent side of this category has been in flux: 3M's Novec 1230 clean agent was discontinued at the end of 2025, pushing suppression-system designers toward alternative fluorinated agents or inert-gas systems for new builds and retrofits. Liquid cooling adds electrical and coolant-leak risk in new places — manifolds, CDUs — that detection and suppression design has to account for alongside the traditional IT-rack and electrical-room risk. Investors should watch which agent chemistry backfills the Novec gap and how much of that transition flows through to system redesigns rather than like-for-like agent swaps.

**AI delta:** Higher power density and the added electrical and coolant-leak surface of liquid cooling widen what detection and suppression systems need to cover per rack, while the discontinuation of 3M's Novec 1230 clean agent forces new designs onto alternative agents.

## Companies

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Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.