Alerton, headquartered in Lynnwood, Washington, is a privately held company specializing in building automation systems for heating, ventilation, and air conditioning (HVAC) equipment. Founded in 1981 in Bellevue, Washington by Al Lucas, Clair Jenkins, and Tony Fassbind (the origin of the company name), Alerton pioneered the use of direct digital controls (DDC) in building automation. Acquired by Novar in 2003 and subsequently by Honeywell in 2005, Alerton now operates as a wholly-owned subsidiary within Honeywell's Automation and Controls group. They offer a comprehensive range of solutions including controllers, edge devices, software, and services, catering to diverse sectors such as commercial buildings, education, healthcare, and data centers.