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What is make up air?
When the exhaust fan ventilates air out of the room, the amount of air ventilated needs to be replaced, this is called make-up air. If there is not enough make up air, the exhaust fan's performance will be diminished. Typically make up air for bathroom exhaust fan's is accomplished by a gap cut at the bottom of the door entering into the bathroom.
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Related Questions
Where is the best location to install my bathroom exhaust fan?
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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How do I get a copy of the instruction sheets?
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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How do I clean my exhaust fan?
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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