Below you will find a "Step By Step" outline of how Duracool 12a® Refrigerant was installed using the Duracool® Universal Recharge Kit.

Complete instructions are included with Duracools® Universal Recharge Kit, these instructions are to be read and followed before any work on a vehicle is done. This quick start guide has been provided to help explain the steps involved to install Duracool 12a® Refrigerant.
Our test vehicle was a 2003 Dodge Dakota Sport Pick Up.
The Vehicles owner wanted the R-134a refrigerant removed from the truck and wanted it recharged with Duracool®. Rick the head technician at "Rick's Auto" was more than willing to help us out and only charged us a minimal amount to recover what he refers to as " The Nasty Gas " - R-134a.
After Rick hooked up his recovery machine and recovered the R-134a he replaced the service port caps and left the system evacuated to 10 in. of vacuum. This was perfect for charging the truck with Duracool®.

Rick also stated that were doing right thing with this project and reminded us of the global warming potential of
R-134a. It was interesting when he also stated that Duracool® was 100% compatible with any existing refrigerant or oil that may be in any automobile air-conditioning system, and that current legislation prohibits the mixing of different types of refrigerants.

He went on to tell us that the majority of vehicles that come into his shop for air-conditioning service are almost empty of refrigerant as the smaller molecules of CFC-12 and R-134a leak out over time, but that the larger molecules that Duracool® contain stay put in the air-conditioning system where they belong.

The next step in our project took us to 77 Auto Parts on Keele Street in Concord, where we found James behind the counter, We Had all ready warned him we were coming, and he had the Duracool® Universal Recharge Kit ready and waiting for us. This time we didn't get any free advice, but James did tell us about the growing popularity of Duracool and reminded us that it was the only refrigerant on the market today that comes with a written guarantee. After making our purchase, we were anxious to get home and charge up the truck because it was really starting to get hot, and the thought of driving anywhere without air-conditioning was not a happy one at all.


Once we got home and were back in the driveway, the next challenge was to locate the Low Side service port or fitting, something came to mind about Rick telling us we would mix it up, but I did remember him saying that the Low Side fitting was almost always on the bigger or larger hose, and that we didn't really need to worry because the quick disconnect fitting in the kit would only fit on one of the connections.

Our next step was to calculate the amount of Duracool® that the truck needed, the system tag located on the truck said it should be charged with 1.875 lbs. of R-134a. As this was not a calculation we wanted to make an error with we got out the trusty calculator and first converted this weight to ounces. Then we multiplied the total weight in ounces, times 40% and arrived at the correct amount of Duracool refrigerant we needed. 1.875 lbs. = 30 ounces and 30 ounces x 40 % = 12 ounces of Duracool®
This was perfect because that's exactly what the two 6 oz. cans in the kit contained !

Our next step was to connect one of the cans to the charging hose and attach the quick connector to the low side service port, Holding the can upside down, we then screwed in the handle turning it clockwise to puncture the can, and then slowly turned it counterclockwise to allow the refrigerant into the system. All of this was done with the engine off. One of the important steps in the instructions told us to charge the vehicle very slowly.

Next we started the engine with the fan speed control set to medium and the air-conditioning on. This allowed any remaining refrigerant to be drawn into the system. At this point the compressor clutch was cycling on and off about every 15 seconds, a clear indication that more refrigerant was required, this also confirmed our calculation of 12 ounces. We closed the can tapper valve and removed the quick disconnect, and then slowly removed the can from the charging hose. At this point we got a brief pssssst of refrigerant that was remaining in the can. As Duracool is a totally natural product this was not a concern. We backed out the valve once again and attached the second can to the charging hose and connected it to the low side port and repeated the process as with the first can. Once the can was empty we removed the charging hose and replaced the low side service port cap, the compressor clutch was now cycling about every minute.

The final step was to attach the refrigerant identification tag on dry area near installation port, and then check the vent temperature in the truck. With the thermometer in the center vent and the system still set to high we recorded a vent discharge temperature of 34 degrees Fahrenheit at idle, this was 9 degrees colder than with the R-134a refrigerant. The ambient temperature when we did the recharge was in the Mid 80's. All in all it was a successful project as we now have an environmentally friendly refrigerant in the truck, that is more efficient and definitely colder than what Rick from "Ricks Auto Repair" was calling the "nasty gas" .

The complete set of installation instructions are available Here

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