Understanding AHAM and CADR: Your Guide to Cleaner Indoor Air


In today’s world, indoor air quality is more important than ever.  Dust, pollen, and even wildfire smoke can significantly impact our health and comfort. Air purifiers offer a solution, but navigating the world of product specifications can be confusing. Is product efficiency a sufficient way to rate them, or should we think about effectiveness? This article explains the role of the Association of Home Appliance Manufacturers (AHAM) and the importance of the Clean Air Delivery Rate (CADR) in choosing the right air purifier for your needs, plus an upcoming standard that wants to deliver even better indoor air solutions.  

Understanding CADR

The Clean Air Delivery Rate (CADR) is a crucial metric that indicates how quickly an air purifier can remove specific types of particles from a room.  It measures the volume of clean air delivered by the unit and is expressed in cubic meters per hour (CMH) or cubic feet per minute (CFM). AHAM tests air purifiers for three common pollutants; smoke, dust, and pollen. Note: CMH can be converted to CFM by dividing by 1.7.

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What to do when a wildfire is headed your way?

Wildfires: some say that we have to learn to live with them, some say that we need to stay indoors and close doors, windows, and ventilation systems until the plumes of smoke settle down, but in reality, we have to do something else, I will elaborate on that in a flaming hot minute!

Wildfires are very dangerous and destructive for many reasons. When I read on the news that a new fire started even in the most remote location in the world, I take a deep breath because it can happen to anyone and everywhere. It has happened to my parents’ house, and a vast feeling of impotency takes your whole body. In most cases, we worry about the destructiveness, but it is more than that.

Wildfires can occur naturally but unfortunately in most cases, they are byproducts of unconscious anthropogenic behaviour because we leave trash everywhere. Glass bottles that work as magnifying glass under the hot summer sunlight, cigarette buds, fireworks, BBQs are some of the common reasons wildfires start.

Not many people know this but wildfires create new wildfires through pyrocumulus clouds which basically are the cloud plumes that are electrically charged, as a result, lightning bolts come out of the pyrocumulus clouds which light new fires a few kilometers away. Firefighters have a hard time controlling multiple fronts and those kinds of fronts are unpredictably created.

Source: latimes.com
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Wood Fire & Chemical Reactions

Summer is here and once more fires are burning woods and forests in the northern hemisphere from Greece to USA and unfortunately most of the times because someone irresponsible and crazy enough “thought” that he/she will benefit from it.

In this article I am going to discuss the chemical reactions that occur while wood is burnt and the gasses that release into the atmosphere.

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