The Ducane CMP furnace is a discontinued variable-speed, two-stage gas furnace, sold between the years 2000 and 2006. The CMP series could be installed in an upflow or left horizontal configuration. It featured gradual blower acceleration and deceleration, resulting in quieter performance, and a diagnostic sleeve provided fast and accurate troubleshooting. The unit measured 29 1/2-inches in length and 47 3/8-inches tall. The height varied by model from 13 1/2-inches to 20 1/2-inches.
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