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Determining the Quantity of Air Cleaners for Your Application

• The size of the area to be cleaned - length x width x ceiling height
  

• Is this for the purpose of removing dust mites and other allergens, or are there smokers in this area? Is there a high level of pollutants in the area?
  

• What is the main goal of treating the air in this area? Removal of a specific pollutant such as smoke or pollen, overall cleaning and freshening of the environment or perhaps saving energy by re-circulating cleaned air rather than exhausting dirty air are among many reasons.
  

• What is the current airflow of the space to be treated? Existing heating and air conditioning duct placement, unitary heaters, exhaust fans and where they are placed are of importance when setting up your air cleaner(s).

Use the following table to estimate the number of
air changes required for your application:

Pollutant Concentration	Suggested Number of Air Change/Hour	Typical Application for Suggested Number of Air Changes per Hour
Low	4-8	Household-(allergies/dust), Office areas, Etc.
Medium	9-12	Beauty Salons, Photo Labs, Etc.
High	13-16	Restaurants, Night Clubs, Bingo Halls, Bowling Alleys, Casinos, Cigar Bars,  Etc.

Each LakeAir brand air cleaner provides an level of air cleaning capacity which is measured in cubic feet per minute (CFM). Every model listed on these pages has a cfm rating which will help you in determine which model you would need to effectively clean the area which is polluted.

STEP 1 - Calculate the volume of the area to be cleaned in cubic feet.

Length x Width x Height of area = Cubic Volume

STEP 2 - Divide the volume by 60 which represents minutes/hour.

Volume of Area ÷ 60 minutes in an hour = Cubic Feet Per Required for

ONE AIR CHANGE/HOUR

STEP 3 - Multiply the number of cfm's required in step #2 by the number of air changes desired from the chart above.

Cubic Feet per Minute (#2) x #of Air Changes/hour (from chart above) =
Cubic Feet per Minute (CFM) required for this application

STEP 4 - Compare the Cubic Feet per Minute (CFM) required with the cfm rating of the units you are considering. If the cfm required is more than any of the cfm ratings on an individual unit, you will need more than one unit for that application.

CFM required for One Air Change/Hour x Air Changes/Hour Needed =
CFM's Needed for Your Application

For a faxed or mailed quotation, please send us the measurements of the area you wish to clean and the number of air changes/hour you wish to accomplish. We'll do the work for you...just send us an e-mail.

EXAMPLE SPACE CALCULATION

Room dimensions: 50' x 100' x 10' ceiling

Type of area: Restaurant or Lounge

Air Changes Desired: 16 Air Changes/Hour (heavy pollution level)

Step 1 - Volume

50' x 100' x 10' = 50,000 cubic feet

Step 2 - Find Out CFM Required for One Air Change/Hour

50,000 Cu. Ft.÷ 60 Minutes in an  Hour = 833 cubic feet/Minute = ONE Air Change in an Hour

Step 3 - Total Volume Per Minute To Be Cleaned

833cfm x 16 air changes = 13,328 cfm

Step 4 - Number of Units Needed

13,328 cfm ÷ cfm of chosen unit = Number of Units Needed

(Model LA-2000): 13,328 cfm ÷ 2,100 cfm = 6.34 or 6-7 units

(Model LA-1400): 13,333 cfm ÷ 1,100 cfm = 12.09 or 12-13 units

Use the table below to find the cfm or metric cubic meters per minute capacity of the model you would like to use and compare it to the number you obtained using the calculations above.

LakeAir models and clean air delivery rates in Cubic Feet per Minute or CFM and Cubic Meters per minute

Model	CFM - low speed	CFM - high speed	Cubic Meters/Min. - low speed	Cubic Meters/ Min.- high speed
LAFC	400 cfm	1,000 cfm	11.3 cu. meters/min	28.3 cu. meters/min
HEPA LAFC	400 cfm	900 cfm	11.3 cu. meters/min	25.5 cu. meters/min
LA-1400	800 cfm	1,100 cfm	22.7 cu. meters/min	31.2 cu. meters/min
LA-2000	1,500 cfm	2,100 cfm	42.5 cu. meters/min	59.5 cu. meters/min

For more information, follow links to:

Common Applications of LakeAir Air Purifiers
See which unit best suites your needs

Particles and Their Sizes in Microns

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