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Exhaust Fans

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Exhaust Fans Q&A

HVAC and Refrigeration
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Exhaust Fans
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Gender: Male
Field of Industry:: PAINT MANUF
Product used for:: VENT
Years purchasing from Grainger:: FOREVER
2 years, 7 months ago
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Pinehurst, TX, USA
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Answer: 
I do not have enough information to properly answer this question. I would recommend calling 1-800-472-4437 and ask to be connected with HVAC tech support.

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Age: 35 to 44
2 years, 7 months ago
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Lincolnshire, IL, USA
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Answer: 
cubic feet for room to exhaust vs CFM of air moved by exhaust fan... 1 to 1 ratio is cubic feet vs cubic feet of air volicty... if your seeking a negative pressure room than higher cfm fans to exhaust the cubic feet of room, plus fresh air intake to replace the exhausted air... i.e. a fresh air opening that is 10 x 10 is 100 sq inches of fresh air make up. locate conversion . com for the math

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1 year, 10 months ago
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its for manufacturing and industrial purposes
11 months ago
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Answer: 
In order to better assist you we will need additional information. Please call 1-800-Grainger Monday-Friday 7AM-7PM to speak with a Technical Product Support Specialist. Thank you for using Grainger Ask & Answer.
11 months ago
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Answer: 
You will need to determine the required ACH (air changes per hour) to size the fan to the cubic dimensions of your booth. Even if not required, I highly reccommend at minimum a totally enclosed motor, if not an explosion-proof rating.
10 months ago
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I am wanting to move 3,500 cfm through an enclosed space, how many square ft of vent area is required to keep static pressure less than 1/4" with in the enclosed space.
9 months ago
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Answer: 
Fullofair, What "an enclosed space" are you talking? The static pressure that will have in the area, depend the what fan do you have and how the area is tight, "airtight", but if want a metal round duct for move 3500 cfm and the duct is 100ft length, you will need a 24 inches diameter round metal to move 3500 cfm. This what I usually use, for buy a vent, look the manufacture catalog, because depend the free area of the vent and the shape of the vent. If can't use 24 inches diameter duct, 22 inches could do it with a good friction loss.
9 months ago
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Answer: 
Fullofair, What "an enclosed space" are you talking? The static pressure that will have in the area, depend the what fan do you have and how the area is tight, "airtight", but if want a metal round duct for move 3500 cfm and the duct is 100ft length, you will need a 24 inches diameter round metal to move 3500 cfm. This what I usually use, for buy a vent, look the manufacture catalog, because depend the free area of the vent and the shape of the vent. If can't use 24 inches diameter duct, 22 inches could do it with a good friction loss.
9 months ago
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Field of Industry:: Stone fabrication
Product used for:: buisness restrooms
Years purchasing from Grainger:: 10
2 years, 6 months ago
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Answer: 
SIZE ACCORDING TO CUBIC VOLUME OF ROOM
2 years, 5 months ago
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Answer: 
You will need about 6 air changes per hour for a commercial bathroom.
First, you need to determine the cubic feet of air in you have in your bathroom. To do this measure the square footage of the floor and multiply by the ceiling height. For example, a 10' x 10' bathroom with an 8' ceiling has 800 cubic feet of air (10x10=100, 100*8 = 800).

Then multiply your cubic feet by the number of air changes desired, in this case 6. (800*6=4800, in the above example

Finally, divide by 60 to get the CFM needed from your exhaust fan. In this example 4800/60 = 80.

So, in a 10'x10'x8' bathroom you would need a fan that moves 80 CFM.

Hope this helps.
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2 years, 5 months ago
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Do I measure the diameter of the guard or the fan blade
10 months ago
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Answer: 
In order to better assist you we will need additional information. Please call 1-800-Grainger to speak with a Customer Service Agent. Thank you for using Grainger.com Ask & Answer.
10 months ago
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Answer: 
1HLA1 need a 10.5" x 10.5" minimum open hole to be installed, 1HLA2 need 13" x 13". This items are the whole unit, not a replacement part for that unit. (come with the fan, motor and shutter, just like the picture)
For replace the whole unit, measure the open hole, so you know it will fit there, also the electric power that you have there.
10 months ago
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300 cfm
Direct drive
.25-.5 static
1/6 hp
1750 rpm
120/1 voltage/phase
Backdraft damper
Speed control
Roof curb
10 months ago
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Answer: 
5yc89 comes up as a discontinued tool holder.
In order to better assist you we will need additional information. Please call 1-800-Grainger to speak with a Customer Service Agent. Thank you for using Grainger.com Ask & Answer.
10 months ago
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Answer: 
Ripeah,
Check your number item 5YC89, this item is a tool not exhaust fan, call Grainger or look the catalog, even if is discontinue the item number will match and they will tell you the new replacement exhaust fan that you need.
Copy the Model and Brand, ask again.
10 months ago
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Building size is 60X100X18. How many cfm will it require to have (3) air changes per hour
7 months ago
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Answer: 
For that size of an area, it would require 4320 CFM for 3 ACH.

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7 months ago
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Answer: 
Metalman2014,
The answer by Adaml is INCORRECT, if your warehouse is 60Ft x 100Ft x 18Ft, all to do is calculate the volume in cubit feet and divide by the minutes per change.
60 x 100 x 18 = 108000 cubit feet , then divide by: ( 3 changes per hour = 60 / 3 changes minute) = 108000/20 = 5400 cfm

You may want use 12 or 15 changes minutes,
108000 / 12 = 9000 cfm or 108000 / 15 = 7200 cfm
Yes I went to a good school!
7 months ago
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2 months, 1 week ago
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Answer: 
The flow of air would be 122 cubic metres per hour. Diameter of the duct would be around 8-9 cms.
2 months ago
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Answer: 
Tux94,
I need more information, the speed (1.7 m/s) depended the size of the duct and the volume the air that you are pulling. So, Q cfm = S ft/m X A ft^2 . If you multiply the area of the section of the duct by the speed of the air on that section, you will have the flow (cfm)
2 months, 1 week ago
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Gender: Male
Field of Industry:: Church
Product used for:: Exhaust in Kitchen
Years purchasing from Grainger:: NA
2 years, 8 months ago
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Answer: 
You can contact Grainger at 1-800-323-0620 for price quotes for the exhaust fan or repair part however Grainger does not provide labor.
2 years, 8 months ago
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Looking for a low-flow fan to continuously exhaust a bathroom. Want 20 cfm or thereabouts. Can be ceiling or wall mount; can be in-line for a duct of most any size.
Field of Industry:: engineer
Product used for:: personal - home, this time
Years purchasing from Grainger:: 30+
2 years, 7 months ago
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Lawrenceville, GA, USA
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Answer: 
Here are a few products that may meet your specifications. 3DPE2 bath fan 53cfm @ 0.100sp, 4C734 bath fan 50cfm @ 0.100sp, 5E831 bath fan 51cfm @ 0.100sp.

Thank you for using Grainger Ask and Answer.

Disclaimer:

The source for the answers given by Grainger in Ask and Answer are based on the information provided with the question, which may not be complete or may not apply to other situations, and based on product literature and informational materials, the content of which is provided by Grainger’s product suppliers. Grainger disclaims liability for any information it provides in Ask and Answer which later may be alleged or determined by a court of law to be inaccurate or incorrect. The answers given by Grainger in Ask and Answer are not intended to replace or supplement any professional, engineering or other consultation services available to its product users. Always read, understand, and follow the product information and instructions provided by the manufacturer.
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Age: 35 to 44
2 years, 7 months ago
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