Daikin Comfort Technologies

Daikin Comfort Technologies is the North American arm of Daikin Industries, the world's largest air conditioning manufacturer. The company sells residential and commercial HVAC systems - heat pumps, ductless units, gas furnaces, thermostats, and indoor air quality products - across a global footprint that reaches over 140 countries. Its product portfolio spans whole-home comfort solutions to individual components, all moving through an extensive contractor network. For security professionals, the threat surface is industrial and physical: connected thermostats, networked HVAC controllers, and building automation systems that sit on OT/IT convergence points. The attack model runs from firmware-level exploits on embedded devices to supply-chain risk across a massive contractor ecosystem. Defending a company whose products are installed in millions of homes and commercial buildings means securing both the enterprise stack and the operational technology edge. Daikin's scale - backed by over a century of engineering from its parent company - means security teams work across domains: IoT device hardening, secure software development lifecycle practices for embedded systems, network segmentation for building controls, and incident response for connected product fleets. The sustainability commitment and contractor-driven distribution model add layers of complexity around vendor access management and third-party risk.