Bathroom vent fans

Bathroom vent fans are a very important, yet, often overlooked household appliance. The main purpose of the bathroom fan is to vent the moisture that is created by showering and bathing; removal of odors is also a function. Without a fan to vent the moisture, the moisture stays in the room and can cause mold, mildew and odors. Some of the moisture can permeate the walls and ceilings and cause damage in the wall and ceiling cavities. Have you ever showered without a window open or a vent fan? Try it, return to the bathroom 45 minutes later and you can still feel the moisture in the air; this is humidity.

Some codes do not require a bathroom fan if there is a window in the bathroom that can act as a vent. When I was a teenager, my parents house had a window in the bathhroom, but no fan. I would open the window before I would get in the shower and it worked quite well. Some people do not like to do that in the winter.

I inform my clients that even with a window present, that they should consider installing a bathroom fan. This will help vent the moisture for those days when they do not want to use the window.

So how do you know what capacity fan you should install? The fans are rated based on the amount of air they can move in (CFM)cubic feet per minute. You want to move enough air for 8 air exchanges per hour.

There is a simple formula you can use to determine the CFM of the fan your bathroom requires. First, measure the height, length, and width of the bathroom, this will give you the volume.

Then follow this formula: CFM=Volume/7.5. For example, I have a bathroom that is 7 ft floor to ceiling, 12 feet long, and 5 feet wide. So 7x12x5=420, CFM=420/7.5, CFM=56. I would need a fan that is rated at 56CFM or greater.

Remember, install the fan according to manufacturers instructions. If you are not comfortable installing the fan, please hire a qualified contractor to perform the install.

4w5ejgt68p


Post new comment

The content of this field is kept private and will not be shown publicly.
  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.

More information about formatting options

CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
  _____   ____   __        __ __   __
| ___| | _ \ \ \ / / \ \ / /
| |_ | |_) | \ \ /\ / / \ V /
| _| | _ < \ V V / | |
|_| |_| \_\ \_/\_/ |_|
Enter the code depicted in ASCII art style.

COUNTIES

Cook, DuPage, Grundy, Kane, Kendall, Kankakee, and Will.

CITIES
Alsip, Berwyn, Bolingbrook, Bourbonnais, Channahon, Chicago, Chicago Ridge, Crestwood, Crete, Downers Grove, Frankfort, Homewood, Homer Glen, Homewood, Joliet, Lemont, Lockport, Lombard, Kankakee, Manhattan, Midlothian, Mokena, Monee, Naperville, New Lenox, Oak Brook, Oak Forest, Oak Lawn, Oak Park, Orland Hills, Orland Park, Palos Hills, Palos Heights, Palos Park, Plainfield, Posen, Woodridge, Romeoville, Steger, Tinley Park Home Inspector

www.OrlandParkHomeInspections.com
Merino's Home Inspection & Education Inc.
9029 Pebble Beach Lane
Orland Park, Illinois 60462
708-535-6057
708-612-6679


Orland Park home inspector
Tinley Park home inspector
Illinois Home Inspector License 450.010091
Illinois Home Inspector Entity License 451.000851