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Are foul odors
from your auto A/C System making you sick? :
It's a common problem.
What's worse if that most service shops don't have a reliable solution.
Understand how the air flow works in your auto A/C system and you will quickly
see how you can easily eliminate those foul odors.
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odors from an auto A/C system is actually a very common problem. It's
also quite simple to solve, if you know how to get to the source of
the problem. Countless 'fixes' promise to remove the odor, but only mask
them.
Understand
first of all, that any product you spray into your dash vents or apply from
inside the car will only mask the odors. They will not solve the problem,
that's for sure.
The
problem starts at your auto A/C evaporator. More specifically, it starts
on what is known as the 'air side' of the evaporator. That is the side that
faces the incoming air. What you may not know is that all of the air that
enters into your vehicle MUST pass over the evaporator first. Regardless
if you're calling for cooling or heating, all of the air entering your vehicle
passes over the evaporator first.
The
typical auto A/C system (or MHVAC... mobile heating, ventilation and air
conditioning system) is actually a 'series re-heat' system. That means all
the air entering your vehicle passes over the evaporator first. If you're
calling for cooling or A/C, the air enters directly into your vehicle passenger
compartment after passing over the evaporator. If you're calling for heat,
then the air is directed from the evaporator to the heater. Then it enters
your car as heated air. In the event you are calling for something between
full heat of full cooling, then some of the air is directed right into the
car while some of it is directed over the heater. The air mix provides the
comfort level that you select.
To
best illustrate this, we've included an illustration (below) of a typical
auto A/C system air flow diagram.
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Air flow in the
auto A/C system:
As
mentioned above, all the air entering into the vehicle is directed over the
A/C evaporator first. From there, it's either sent directly into the vehicle
(for A/C cooling) or directed over the heater for heat. When mid range
temperatures are required, the air is mixed; some enters directly from the
evaporator while other air is directed over the heater. |
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This
illustration shows the actual inlet air flow of a typical auto A/C system.
Notice that from the blower motor (bottom right of the illustration) all
air passes over the A/C evaporator first! Then it's directed as required
for cooling or heating. |
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in mind that when the auto A/C system operates properly, the evaporator is
always wet with condensation. That's the moisture in the air that is being
removed as the warm air hits the cold evaporator. Additionally, the evaporator
case is completely enclosed; therefore it's a dark and damp place.
Now,
consider the air that is being directed into your vehicle. All of the airborne
pollutants are pulled into the evaporator air inlet by the blower motor.
The wet evaporator face makes the idea 'filter' for the air, leaving all
the debris and pollutants trapped.
In
addition to that, if you routinely park under trees, it's typical to find
dried leaves in the evaporator case too! With a combination of the air born
pollutants, leaves and any any other contaminants in the air, it's no wonder
the evaporator case quickly becomes a breeding ground for mold, mildew, spores
and bacteria. |
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This
illustration shows a different view of a typical auto A/C system and the
air distribution. You can quickly see where the odor problem occurs on the
air side of the evaporator. You can also quickly see how spraying anything
into the A/C system vents will not solve the problem. It will only mask the
odor. |
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The Solution:
Treating and eliminating odors from your auto A/C system:
The
only way to resolve the problem of odors from your auto A/C system is to
get directly to the root of the problem. Evaporator treatments available
on the market can do just that. The reason we say 'can', is that a lot
of products sold as an odor treatment are still applied through the vents.
By know you understand that anything applied through the vents will not solve
the problem. Therefore, getting an odor treatment that's applied directly
on the face of the evaporator will help eliminate the problem.
The
A/C Evaporator Treatment does
just that. It's a complete single can application kit that includes a 30"
spray wand that let's you get directly to the air side of the evaporator
- exactly where the problem starts.
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The
illustration on the left shows a typical application of the A/C Evaporator
Treatment. This particular product formula is a triple action foaming formula.
It helps to sanitize, protect and eliminate odors. In the photo you can see
how it works in a cut away evaporator case. The application spray wand and
brass spray nozzle applies the product directly to the air side of the
evaporator. Within minutes the foam is reduced (to drain out your evaporator
drain) and the auto A/C system operation is restored. |
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Your best solution
:
The
AIR REPAIR A/C Evaporator Treatment is a complete solutino to foul odors.
It's triple action foaming formula works quickly. The spray wand assures
that you apply the product directly to the source of the problem!
Order now and eliminate
that odor causing mold & mildew! |
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Applying the
A/C Evaporator Treatment :
This
product is easy to install. Simply locate the evaporator case from under
the hood. The evaporator is usually on the passenger side of the vehicle.
The spray wan has to be inserted (through any opening) between the
evaporator and the blower motor. That assures you are applying the product
to the air side of the evaporator. If an opening is not available, you can
loosen the blower motor housing and route the application hose into the
evaporator case that way. The spray wand is only 3/16" of an inch thick,
so just about any opening will do.
In
alternative cases, where no opening is available, you can CAREFULLY DRILL
A 1/4" HOLE into the evaporator case. CAUTION must be used as drilling into
the evaporator will cause a leak that is probably not repairable. With a
small 1/4" hole in the air side of the evaporator, you can easily thread
the application hose into the evaporator case. Once completed, simply use
a 'puddy' to cap the hole.
From
our experience, one application will usually last between 3-6 months, depending
on how contaminated the A/C evaporator is. Your particular results may
vary. |
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You
can shop at the COOL ZONE™
On-Line Auto A/C Parts Warehouse
for
A/C Evaporator Treatment now |
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Link to this article!
If you sell auto A/C parts or service and want your customers to truly understand
the 'proper' A/C compressor replacement procedure, add this html code to
your web page and link to this article!
From the world's
leader in auto A/C service information - autoACsystems.com |
Are
foul odors from your auto A/C system making you sick?
It's a common problem but if you're not getting to the source of the problem,
you will only mask the odors. See why your A/C system develops these foul
odors and how you can easily eliminate them! |
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from your auto A/C system making you
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getting to the source of the problem, you will only mask the odors.
See why your A/C system develops these foul odors and how you can easily
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This was probably
one of the best books on recharging air conditioning that I have seen...
