Putting an exhaust for the bathroom is a wise move of a family.  As we all know, the bathroom, the bathroom is a place where we get rid ourselves of waste that carry germs and bacteria. 

The bathroom is the most wet and moist area of the house.  The makes bathrooms an ideal place for molds and mildews to grow.  An exhaust fan is very helpful in eliminating the moist thereby preventing the growth of molds and mildews.

It is very important to choose the bathroom exhaust fan wisely.  The first thing to consider is the volume of the bathroom.  This can be done by multiplying its width, length and height. 

Then, determine the cubic feet per minute (CFM).  This can be done by dividing the volume by 8, the recommended number of air changes by the Home Ventilating Institute.  For example, if the volume of the bathroom is 10 x 12 x 11, the bathroom exhaust fan to buy should have a CFM of 165.

The next thing to consider is the noise of the exhaust fan.  This is measured in SONES and the price will vary depending on the noise.  SONES 4 is the loudest with a noise similar to that emitted by a television.  But many exhaust fans barely make any noise at all.

 The final aspect to consider in buying a bathroom exhaust fan is the design and other features.  Some exhaust fans have beautiful lighting features.  Others look like while grills and some even have heating features in them.  The choice of design should match the look of the bathroom.  Just make sure that screws are used instead of nails because exhaust fans vibrate and may cause nails to loosen very fast.