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Before you
can repair your A/C Hose, you have to be sure that you know the proper size
fitting and hose :
Taking the measurement
of the A/C Hose section is easy. Just be sure that you're measuring the tube
at the correct spot. Below are all the details you need to determine the
correct fitting and hose size needed for repairing any A/C hose.
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Determine the
right size of A/C Fittings and Hose:
Typically,
the size of A/C hose required is determined by the size of the fitting or
tube section that is used. There are four fitting sizes that will provide
almost 99% coverage for all the A/C hose repairs. The tube O.D.'s (Outside
Diameters) are 3/8", 1/2", 5/8" and 3/4". They are commonly converted to
'number' sizes as shown in the fitting size chart below.
Before
you start, it's important to understand where to take the measurement. In
order to determine the proper fitting and hose size required for an A/C hose
repair, you must take a measurement of the OUTSIDE DIAMETER (O.D.) of the
tube section as close to the section of A/C hose as possible. You don't have
to discharge the A/C system to do this measurement, but you will have to
recover the charge before attempting to remove the hose section and completing
the repair.
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Measuring the
tube or fitting size:
As
illustrated above, simply measure the tube section of fitting size by taking
a measurement of the tube O.D. (outside diameter) as close to the section
of A/C hose as possible. Then refer to the chart below to understand what
size of A/C hose or fitting is required to complete the repair.
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A/C Hose and
Fitting Chart:
With
your A/C fitting or tube measurement as determined above, you can quickly
find out what size A/C hose or fitting is required from the chart below
TUBE
or HOSE O.D. = Outside Diameter
TUBE or HOSE I.D. = Inside Diameter
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Tube O.D.
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Nominal
Size |
A/C hose
I.D. |
A/C hose
O.D. |
3/8" |
#6 |
5/16" (.312") |
3/4" (.750") |
1/2" |
#8 |
13/32" (.406") |
29/32" (.906") |
5/8" |
#10 |
1/2" (.500") |
1" (1.000") |
3/4" |
#12 |
5/8" (.635") |
1-3/32" (1.09375")
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Note about the
A/C hose sizes listed in the chart:
The
above chart provides A/C hose I.D. and O.D. of standard barrier refrigerant
hoses. In some applications, the original manufacturer may use 'Reduced Diameter'
barrier hose. Reduced Diameter hose is the same INSIDE DIAMETER as standard
barrier hose, but the OUTSIDE DIAMETER is reduced. It allows for tighter
bends under the hood. However reduced diameter A/C hose can be replaced with
standard barrier hose without any effect on fit or performance of the A/C
system. |
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It's also important
to remember...:
If
you're replacing or repairing an A/C hose, you will require
new o-rings or gaskets
when reinstalling the hose. The actual o-ring sizes may not be the same as
the fitting sizes that you're replacing. By that, we mean that the hose assembly
that you're working on could be part of a long assembly that includes
different sizes of fittings. Be sure you have all the right o-rings and gaskets
to complete the job with leak free joints!
You
will also have to recharge the A/C system when you're finished. If you're
not sure about all the proper procedures, view the information about
How to Recharge your
A/C system.
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Another look
at measuring the A/C fitting:
Here's
an actual photo of an A/C fitting that will show you exactly where to measure
the tube O.D. (outside diameter). Match the tube O.D. to the chart above
to determine what size hose is required to repair your A/C hose assembly.
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This
photo shows an actual A/C hose fitting. The red arrows indicate where the
tube O.D. measurement should be taken. You should always measure the outside
diameter of the tube on a straight section of tube, as close to the A/C hose
section as possible. |
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Everything you
need to do professional A/C hose repairs:
Get
everything you need to complete these professional A/C hose repairs
at the COOL ZONE™ Auto A/C Parts Warehouse. We stock universal hose
kits that provide quality barrier hose with the ferrules and retainer clips
you need. We also stock the most economical A/C Hose Crimper from Crimpmate
and the complete 3 step A/C hose repair system. |
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Universal
hose kits come in 2 different lengths. They provide everything you need to
complete professional A/C hose repairs in minutes. Simply measure the length
of hose being replaced and order the 18" or 30" Universal hose kit. (AR6300
A/C Hose Crimper or equivalent is required). |
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Universal
hose kits come in 2 different lengths. They provide everything you need to
complete professional A/C hose repairs in minutes. Simply measure the length
of hose being replaced and order the 18" or 30" Universal hose kit. (AR6300
A/C Hose Crimper or equivalent is required). |
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The
Crimpmate™ 4-in-1 design lets you crimp and A/C hose quickly and easily!
There are no die sets to change so there's never any lost or missing parts.
The unique 'top loading' design makes it easy to load and crimp long hose
assemblies without having to 'thread' the entire hose through the crimper.
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The
Crimpmate™ 3 Step A/C Hose Repair kit is refillable and the perfect
solution for service shops or busy DIY'ers! Includes ferrules for all four
sizes of A/C hose and 9 different retainer clips. Complete with rigid storage
box. |
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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 visitors to truly understand
how easy it is to repair any A/C hose on their vehicle, you can add the following
html code your your web page
and l ink to this article!
From the world's
leader in auto A/C service information -
autoACsystems.com |
Use
the fitting chart to determine the right size hose for your A/C repair
Once you've measured the fitting, just use this A/C fitting chart
to determine the proper size of A/C hose and fitting that's required for
your repair. We've also got complete details about repairing any A/C hose
on your vehicle. |
| HTML Code
for this link; Copy and Paste into the body of your web page: |
| <FONT face="Verdana, Arial, Helvetica, sans-serif"
SIZE="2" COLOR="#000000"><B><A
HREF="http://www.autoacsystems.com/_faqs/detail/fittingsize.html">Use
the fitting chart to determine the right size hose for your A/C
repair<BR> </A></B>Once you've measured the fitting, just
use this A/C fitting chart to determine the proper size of A/C hose and fitting
that's required for your repair. We've also got complete details about repairing
any A/C hose on your vehicle.</FONT> |
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This was probably
one of the best books on recharging air conditioning that I have seen...
