Dwell Time Air Purification is So Important, but Why?

dwelling

Dwelling or Hanging Out Around the Filter Longer Provides Cleaner Air

Dwell time has a number of meanings for various industries. Right now, you are taking part in a dwell time metric. How long will you stay (or dwell) on this page? In theory, the longer you stay, the more time you are investing into reading and engaging with this piece of content.
 
Ironically dwell time can be deemed a negative term just the same, since it can also represent the length of time customers spend waiting in a queue.
 
In air purification, dwell time is a as important as it is desirable. You want longer dwell times when you turn on your air purifier. The longer harmful indoor air contaminants dwell inside the air purifier, the more filtration is taking place.
 
To clarify: dwell time in air purification means the amount of time indoor air pollutants spend going through an air filter. Longer dwell times mean more pollutants can be removed by the air filter. This is especially important when it comes to gases, volatile organic compounds and odors, because of the way these contaminants are filtered -with activated carbon.
 
air purifier dwell time 

Dwell time: A secret weapon for activated carbon filters

Many air purifiers use activated carbon to address odors, chemicals, and gases. It’s the most effective, and there are not many other filters that promise to remove VOCs. HEPA filters, for example, can rid the air of airborne particles, dust and pollen, but they do not trap gaseous pollutants. HEPA and carbon filters used together are the optimal way to clean your air.
 
Activated carbon has become the go-to filter material for odors and VOCs not only because it is the most effective gas filter out there and does not produce harmful by-products. AllerAir offers fresh, non-recycled, virgin carbon, made strictly from natural ingredients.Activated carbon is a very porous material because it was treated with oxygen and has become riddled with fissures and tiny holes. That means there is a lot of surface area available for airborne chemicals and gases to chemically bind themselves to it. This process is called adsorption. So the more surface area you have and the longer dwell times for contaminants, the cleaner your air will get with each bypass.
 

Tips increase the dwell time of your air purifier

As a consumer, there is not much you can do to change the dwell times AFTER you have bought a unit. Let’s hope you have a granular activated carbon filter. One suggestion is to operate the air purifier at slow speed, which also helps to reduce white noise. And it never hurts to call the manufacturer. Some companies will help you change filters in order to get the right combo of air filters.
Nevertheless, it’s best to decide on an air purifier with the right filters and long dwell times before the purchase to make sure you get the best filtration in your space.
     
About Carbon Blends

Our standard “EXEC” carbon blend has a very large internal surface area and works exceptionally well for a wide range of air pollutants. 

 

The “Vocarb” carbon blend is our most recommended and best-selling specialty carbon blend. Vocarb stands for Volatile organic compounds or VOCs and this include a variety of chemicals that can cause a range of health problems including shortness of breath, headaches, fatigue, nausea, dizziness and eye, nose, lung and throat irritation. Some VOC's are suspected to cause cancer in humans and have been shown to cause cancer in animals. The long-term health effects caused by VOC's would depend on the concentration and length of exposure.

 

Some chemicals adhere better to different types of carbon materials and carbon blends. Over the years we’ve sourced and developed over 40 carbon blends. If you have an odor or chemical you need to remove, we have a blend to target it