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Air Changes per Hour (ACH)
6 Light General Offices, Computer Rooms
8 Average Conference Rooms, Break Rooms, Designated Smoking Areas
12 Heavy Bingo Halls, Extra Smokey Areas
Air Cleaner CFM (CMH) Capacity
Quantity of Air Cleaners = Amount of CFM (CMH) required / Air Cleaner CFM (CMH) Capacity
Typical exhaust fan moves 4,000-5,000 cfm (cubic feet per minute)
These examples are for reference only. Some of the values have been averaged in order to give a rough estimate. In no case were the values inflated to overstate the outcome.
Annual Air Conditioning Loss in US Dollars
(click here to plug in your own numbers)
CFM exhausted = 4,500 cfm
Outside Temperature = 85 degrees
Desired Indoor Temperature = 72 degrees
Cost of kWh = $0.104
Hours of operation per week = 40 hours
Number of cooling weeks per year = 20 weeks
Your cost of air conditioning loss per year = $1,283.00
Annual Heating Loss in US Dollars
(click here to plug in your own numbers)
CFM exhausted = 4,500 cfm
National average annual heating degree day for desired Indoor Temperature of 72 degrees = 7854
Variable for gas fired heating = 14.976
Hours of operation per week = 40 hours
Your cost of heating loss per year = $4,025.00
Grand Total (of lost dollars by exhausting smoke) = $5,308.00 every year!
CMH required = Length of room x Width x Height x ACH
Metric
unit of measure
Calculators and charts used by permission from Air Quality Engineering, Incorporated.
It is our recommendation that you use the values for Medium capacity for two reasons.
1. The machines are more efficient at slower speeds and less noisy.
2. If you need to run them at high speed to keep up with normal conditions, you will not be able to keep up during special events where you would have larger crowds. Many of our customers report increased customer count just by adding smoke air cleaners to their businesses.
CFM required = Length of room x Width x Height x ACH / 60 min
The simple smoke eater calculator below will help you determine which machine you may want and how many are needed for each room. Unit of measurement is GREEN for feet and BLUE for metric. Start by finding out the amount of cubic feet per minute (CFM) required. Metric conversions of cubic meters per hour (CMH) are shown in BLUE in the Air Cleaner CFM Capacity table below to help our international customers determine how many machines you may need.
U.S.A.
unit of measure
Below you will find the necessary smoke eater calculator to determine which machines will best suit your needs and how many you will need. Each set of circumstances will dictate the layout and number of smoke eaters necessary per room or area. For instance, you may require fewer office smoke eaters than restaurant smoke eaters. That is why there are different sizes and types of machines. This information is for reference only, in determining how many smoke removal air purifiers are necessary for your conditions. We are happy to talk to you by phone so you get the perfect fit for your specific situation.