You are here: Home > Negative Air Machines > Air-Flow Calculator

Air-Flow Calculator for Negative Air Machines

A negative air machine is an essential device for contained spaces such as construction sites, hospitals, testing labs and clean rooms where clean air is a necessity. But how do you know which model you should get for your space? After all, a machine that's too small won't adequately remove the dust, toxins and odors that might build up. But too large a machine will waste money on operating costs. Spycor Environmental wants you to get the best machine for your needs, and our negative air machine air-flow calculator will help you find it by matching a machine to your unique situation.

Enter the sizes of the containment in the calculator. Click the CALCULATE button and the bottom of the calculator will show you the results of your input.

 Data Entry
Containment Length Feet
Containment Width Feet
Containment Height Feet
Air Changes Required Per Hour
Containment Total Volume Cubic Feet
Complete Air Change Every Minutes
Volume Required per Hour Cubic Feet
CFM Requirement CFM

CFM range of Omnitec Design negative air machines

Model Number CFM
Miniforce 350 or 425
OA600V 150-600
OA800V 150-650
OA800PAC 100-650
OA1000V 300-950
OA1200V 150-1100
OA1200PAC 100-1100
OA1300V 300-1250
OA2000V 300-1900
OA2200 1000 or 2000

How the Air-Flow Calculator Works

You don't need to know complex equations or spend hours with paper and pencil to figure out which negative air machine to buy. Just enter the length, width and height (in feet) of the containment area along with the number of air changes required per hour. (This is how many times you need the air to enter and exit the room.) Then click the "Calculate" button. The Results section will instantly tell you, among other things, what air volume your space requires per hour and what negative air machine CFM (cubic feet per minute) you will need for this. Then head to our Negative Air Machines page and find one that's a match!

Get the Right Negative Air Purifier

Spycor Environmental is committed to doing more than just providing the best air purifying products. We want to make sure you get the ones that are right for your situation. Our air-flow calculator will help you find an affordable negative air machine that isn't too big or too small. We've even included a table below with the CFM range of all our Omnitec Design machines so you know what to look for. But our staff can assist with finding machines from Mintie Technologies, NIKRO, Abatement Technologies and other leading brands. Just call or email us today!