to kill mold in ductwork with ozone
There are no quick or
easy ways to remediate mold in ductwork.
Breathing in mold spores
can be deadly. Certain molds cause permanent, irreversible brain and lung
damage. If there is mold in the ductwork it is likely to be spread throughout
the entire home.
We take phone calls every week from
customers who have a hard time putting together coherent sentences. They
tell us they have a hard time remembering things, and get confused easily.
Simply explaining the facts of ozone
use to them can be difficult.
We wonder if this could be possible
from the brain damage they have already suffered as reported by the American
much of the mold in ductwork can be killed by the proper use of ozone.
First it is important
to note that low levels of ozone used for air purification will NOT sanitize
the ducts. It takes very high levels of ozone, much higher than we can
breath to kill mold.
To little a concentration of ozone means
all the mold will not be killed. It's not just a matter of leaving a smaller
machine on for a longer period of time.
That helps, but if the machine is not
powerful enough, the ozone concentration will NEVER reach the kill ratio
needed to obliterate the mold.
to kill mold in ductwork with ozone
If the ventilation system is infected
with mold, the mold must be killed.
Air handlers spread mold spores all
over the home, and make the mold infection worse.
If your ducts smell moldy, they surely
contain mold spores.
|You may want to fire the ozone into
a return air duct of the system to help sanitize the ducts.
Using a high output generator like
the XT-6000 fired into
the ventilation system is a good way to start killing to mold.
But this method is usually not enough
to truly sanitize the ductwork.
The most important thing to note is
to kill mold the ozone concentration needs to be as high as possible. Too
little ozone concentration means all the mold will not be killed.
High levels of ozone, for a sustained
amount of time, are required to kill molds and bacteria.
Using a small machine with a low milligram
per hour output for longer periods of time IS NOT
THE SAME as using a larger output machine. This is due to
the fact that ozone typically reverts back to oxygen within 20-30 minutes.
Since the ozone is always breaking down,
there is only a certain parts per million concentration that the ozone
level will be able to reach. Whether you leave the machine on for
2 hours or 2 days, the ozone concentration level will go no higher.
Without certain levels of ozone concentrations for a sustained period,
all the mold cannot be killed.
This is true when killing mold in ductwork.
Although firing a high powered ozone generator like the
the return air duct may kill some of the mold, it may not kill it all.
This is because the return air vent
will be drawing in large amounts of air at the same time, which will drastically
lower the ozone concentration.
Even if you seal the return air vent
to make sure only ozone is entering it, it is rare that this ozone concentration
will be high enough as it is just passing through the ducts to kill all
You will remove some of the mold odors,
but you will not truly sanitize the ductwork with this method.
The problem with this method is the
same problem as using too small a machine to try and kill the mold.
The ozone level just passing through may not be high enough to get the
Too much air will be in the drawn into
the ducts with the ozone lowering the total ozone concentration.
This is to say that this method should
not be performed, but there are additional steps that should be taken.
|If the XT-28000
is used, it has a much better chance in killing all the mold inside an
air handling system because of its tremendous ozone output.
Professionals can blast out air systems
by firing the XT-28000 into a return air duct vent.
This method can also help remediate
the entire house of mold.
It is not recommended to blast a ventilation
system for more than 6-12 hours as too much after odor of ozone may be
If the home is still infected with mold
then the XT-28000 should be placed in a central location
inside the home, or in individual rooms to remediate them.
When firing ozone into the ductwork
all people, plants, and animals must vacate the home.
how can ductwork be sanitized?
First the ducts should be cleaned by
a professional with a spinning head vacuum.
This is to suck all the loose dust
and dirt out of the system.
It is very important to remove all
foreign matter from the ductwork.
If dirt and dust are left in the ducts
it provides a medium for the mold and bacteria to grow on.
Typically it only costs $75.00 to $150.00
for a professional to come vacuum out your ductwork.
Some large stores such as Sears and
Macy's offer this service for a reasonable rate.
Be sure and not pay too much for this
service, it is a simple task that only takes an hour or two to perform.
One word of advice: Cover the valuables
and furniture in your home as it is likely to stir up all sorts of dirt
in your ducts.
When your turn the system on there may
be a cloud of dirt and dust everywhere.
It is a advised to leave the house for
a little while once you restart they system.
Wearing a breathing mask is also advised
when you return to clean up the leftover dust that may contain mold spores.
Once the ductwork has been physically
cleaned out the process of sterilization by ozone can begin.
There is no substitute for physically
vacuuming out all debris from ductwork, it must be done if possible.
After the ductwork has been vacuumed
out, all the vents and openings should be closed to the system. They
may have to be covered with cardboard and taped closed to avoid any air
leaks that could let the ozone escape.
|At this point one of the vent covers
of the ductwork can be taken off. A hose can then be connected to the ozone
generator and the open end of the hose placed inside the duct.
It is a good idea to tape up around
the hose to make sure no ozone escapes. Then the duct can be blasted
out for an hour to make sure all the mold and bacteria is killed.
This high level of ozone fired into
the duct will kill most of the mold remaining.
should be done to EACH
leg of the ventilation system, incoming and outgoing.
|Then the ozone can be fed throughout
the entire system with a high powered machine like the XT-6000
via the cold are return duct to help kill whatever mold may be remaining
in the air handler unit itself.
It might be noted that it is harder
for ozone to work in a cold environment, so it is advisable just to run
the ozone with the fan on, and the air conditioner off.
Firing ozone into each leg of the ductwork
is the ONLY method to truly sanitize the ductwork
with ozone, unless a machine as powerful as the XT-28000
It may be one of the only effective
methods to truly ensure all the mold and bacteria is killed in the ductwork.
Again, realize that simply firing the
ozone through the ductwork alone will NOT
sanitize the entire house, unless a machine as powerful as the XT-28000
The ozone concentration will NEVER
get high enough to treat all the rooms at one time with an XT-6000.
Rooms must be blasted out ONE
AT A TIME to ensure that a high enough ozone concentration is achieved
to kill the mold and bacteria in every room, unless a machine as powerful
as the XT-24000 is used.
From time to time the ducts may need to
be sanitized again, especially if there has been a previous problem. If
a mold odor is noticed again it may be time to fire a machine like the
through the ductwork again.
|A Mold Test Kit should then be used
to ensure that all the mold has been killed.
If you have had a previous mold problem,
mold testing from time to time is advised.
You can purchase professional mold test
kits from us on our Models
It is important to note that low levels
of ozone will not "maintain" the ducts and prevent them from regrouping
The maintenance IS the high ozone treatment,
not air purification levels of ozone.
High levels of ozone are what is needed
to kill the mold.
Air purification levels of ozone are
going to solve, or prevent a mold inside the ductwork from returning.
If there is a mold problem in your ductwork,
and it is not taken care of, you will never get a handle on the mold problem
in your home.
There may be other methods of ridding
the mold out of your ducts recommended to you. Be very careful what method
to choose, because mold in ductwork is a very serious issue. It is not
worth gambling with your families health not to do the job right.
is a scientifically proven Mold
Here for proof.
If there has been a history of mold
in ductwork there may be more concerns to consider.
Even dried mold spores can contain mycotoxins
which can still cause health problems.
It is suggested that even if you have
had your ducts cleaned then sanitized with ozone that it may be a good
idea to have a true HEPA filter present to collect any remaining loose
spores that could become airborne.
A HEPA grade filter should be substituted
for the standard air filter on your furnace.
This may still not be enough protection
since there is a large square footage area to cover in an entire house.
It is advised to have a free standing
HEPA filter in key rooms of your home, such as bedrooms, and living rooms
for complete protection. HEPA filters won't kill the spores like ozone
will, but they will help rid any remain or regrowing spores that are present.
Cheap store bought HEPA filters that
sell for $100-$200 are not recommended. They require costly filter changes
a number of times per year.
At the end of the year you will have
spent more for a cheap HEPA filter than for a really good machine like
the kind we offer.
|The HEPA (High
Efficiency Particle Arresting) filter was developed by the U.S.
government to protect scientists from radioactive airborne particles.
The HEPA air filter removes 99.97%
of harmful particles, including dust, mold spores, dust mites, pet dander
and other troublesome allergens.
Along with our
ozone generators that kill mold spores, these fine HEPA
filters can trap any remaining mold spores still floating in the air.
Used in conjunction
with ozone generators, HEPA
filters provide the absolute best air purifying / air filtration system
To learn more
about our high quality line of HEPA filters,