What is make up air?

Typicaly a bathroom exhaust fan should be mounted as close to or inside (if rated for tub shower use) to the shower or tub as possible. This will maximize the effectivness of the unit. Units located in a powder room, should be directly over the toilet.

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CFM is an acronymn for Cubic Feet per Minute. This number is the unit of measurment for how much air is exchanged in one minute of time. The higher the CFM the more "powerful" the exhaust fan is.

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A sone is an internationally recognized unit of loudness. The sones translate laboratory decibel readings into numbers that correspond to the way people sense loudness. Double the sone is double the loudness. In everyday terms, one sone is equivalent to the sound of a quiet running refrigerator in a quiet kitchen. The lower the sone, the quieter the exhaust fan is.

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Instruction sheets can be downloaded from many manufacture websites. Please go to the "Product Information" section of the manufacture website, and navigate to your particular model.

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MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL BEFORE SERVICING THE UNIT. Clean your exhaust fan's grill with a mild detergent, such as dishwashing liquid, and dry with a soft cloth. NEVER USE ANY ABRASIVE PADS OR SCOURING POWDERS. Completely dry before restoring power. NEVER IMMERSE ELECTRICAL PARTS IN WATER. The fan assembly can be vacuumed when build up (dirt, lint, etc.) accumulates over time.

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