Sonic fire suppression startup faces skepticism from safety experts

A startup is pitching infrasound-based fire suppression as a potential alternative to traditional sprinkler systems, but fire safety researchers are pushing back hard on the claims. Experts want to see rigorous full-scale testing across realistic scenarios — furniture and mattress fires, cooking fires, electrical fires, ember exposure — under varied conditions including open and closed doors, different ceiling heights, crosswinds, and obstructed fuel sources. A key concern is whether flames reignite after the acoustic system shuts off.

Michael Gollner, a fire dynamics expert at UC Berkeley, cited a 2018 paper concluding that acoustics alone cannot control fires past the earliest incipient stage. He contrasted the unproven sound-wave approach with sprinklers, which have decades of standards-based testing and certification behind them. The bar for replacing established life-safety equipment, he argued, must be demonstrated equivalent or better reliability — not novelty.

Contra Costa County firefighters who hosted a demonstration are open to further testing, particularly mounting the system on bulldozers used in wildland response. But even sympathetic responders want answers on maintenance cadence, calibration requirements, and how component failures like a dead detector or acoustic generator would be detected and surfaced to the owner.