Technical support materials include catalogs, submittals, service manuals, installation manuals, and owners’ manuals available on the website. Ongoing training programs offered throughout the U.S. on a variety of topics, DFS [duct-free system] included. Inverter technology features high-efficiency ratings as a result of the reduced power required to maintain temperature once the initial setting has been reached. This low speed reduces ambient noise levels while maintaining high efficiency. The addition of the night-quiet feature allows the ability to limit fan speeds and associated noise at night.

Source: ACHR News (a part of news report)

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