AllerAir air
cleaners - heavy
duty air purifiers with HEPA filter and separate activated carbon
canister. Control dust, smoke, odors, allergens, and over 4000 gaseous chemicals. There is no
substitute to AllerAir air purifiers when it comes to durability,
reliability, easy maintenance procedure, warranty, low operating cost and
wide range of air purifier models for specific air cleaning requirements -
cleaning the air from specific chemicals such as, formaldehyde, ammonia and
volatile organic compounds (VOCs).
AllerAir air purifiers - heavy duty HEPA
and carbon air purification system with the highest filtration efficiency in
combined dust, smoke, odors, allergens, and most gaseous chemicals removal.
Most air purifiers on the market
today only filter particles, leaving you to breathe the noxious gases and
odors that are the cause of so much respiratory distress and long term harm to
health. Most air purifiers on the market today only filter particles, leaving
you to breathe the noxious gases and odors that are the cause of so much
respiratory distress and long term harm to health.
AllerAir is by all standards the best filtration system
available on the market today. AllerAir has been producing filtration
systems for hospitals and cleanroom applications for many years and have now
made the technology available for home use.
How the AllerAir high
efficiency air cleaning system works
AllerAir air cleaners use a 4 phase filtering
system.
In the order that the air passes through them
they are: the pre-filter, the Mass Activated Carbon Bed (MAC-B™) filter, the 2
anti-microbial filters and the HEPA filter. 
1) The pre-filter
traps larger dust particle and is easily removed and cleaned with a vacuum
cleaner. It acts to stop the larger particles such as dust and lint from
clogging the other filters.
2) The mass activated
carbon bed (MAC-B™) filter adsorbs gases and odors. (Adsorb:
no it's not a typo. This is the process by which activated carbon captures
gases and odors.) Most off the shelf air cleaners have a few token ounces of
carbon sprayed on the pre-filter. This is only sufficient to capture a small
amount of the noxious gases and odors in the air and for only a short period
of time. The MAC-B carbon filter has pounds of activated carbon (from 7 to 160
lbs.) that will trap 90% of gases and odors that pass over it and will
continue working for many months before needing to be replaced.
3) The 2
anti-microbial filters kill the airborne microbes that pass through
them.
4) The HEPA filter traps
the airborne particles. These filters were developed by the Atomic Energy
Commission to trap radio-active particles. They can capture 99.97% of
particles as small as 0.3
microns. That is as small as some bacteria.
The Power of Activated Carbon
Activated Carbon is the only safe, cost
effective way to trap noxious gases and odors.
What it does and how it works. 
Activated carbon is carbon that has been treated with oxygen to open up
millions of tiny pores between the carbon atoms.
There are so many of these that one pound of activated carbon has a surface
area of 60 to 150 acres.
The technology used in military gas masks
Activated carbon is the substance that keeps military personnel safe from
poisonous gases. It is also used for water filtration.
Adsorption
Adsorbtion is the process where certain chemicals are attracted to activated
carbon and then bond to it. The millions of pores in the activated carbon
provide an enormous surface area to trap these chemicals. 
The bigger the filter, the more chemicals it adsorbs and the longer it
keeps on working
An activated carbon filter acts rather like a sponge. When it is full it can
adsorb no more. The more carbon you have the more you can adsorb before
changing the filter. AllerAir MAC-B carbon filters have from 7 to 48 lbs and
will last from 9 to 24 months.
Most off the shelf cleaners have only a few token ounces of carbon
sprayed on a mesh.
It's not enough to have any useful long term effect.
