![What is this white rotary knob on my furnace? Dehumidifier control? Is it supposed to be OFF? : r/hvacadvice What is this white rotary knob on my furnace? Dehumidifier control? Is it supposed to be OFF? : r/hvacadvice](https://preview.redd.it/what-is-this-white-rotary-knob-on-my-furnace-dehumidifier-v0-eywc80kb2hjb1.jpg?width=769&format=pjpg&auto=webp&s=5ede318b34babd4b5f1a3573a8c437a300642e02)
What is this white rotary knob on my furnace? Dehumidifier control? Is it supposed to be OFF? : r/hvacadvice
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Automatic Condensate Pump, AC110 to 240V 24L/H 200ml Silent HAVC Condensate Removal Pump, Mini Split Design, for Air Conditioner, Furnace, ...
![A wholehouse heavy duty dehumidifier with its duct attached to hvac furnace system of an house. This samples humidity of the circulating air and remov Stock Photo - Alamy A wholehouse heavy duty dehumidifier with its duct attached to hvac furnace system of an house. This samples humidity of the circulating air and remov Stock Photo - Alamy](https://c8.alamy.com/comp/2H2047G/a-wholehouse-heavy-duty-dehumidifier-with-its-duct-attached-to-hvac-furnace-system-of-an-house-this-samples-humidity-of-the-circulating-air-and-remov-2H2047G.jpg)