Aluminum Repair with UNI4300 Soft Solder Kit 

Tip used was our TYPE17-2.

The torch used in the video was a 71 welding handle. We used a TYPE17-2 tip with an oxyacetylene flame. If working in tight spaces, we recommend a MTW-2 tip over the TYPE17-2.

Because 1.The evap is discontinued 2. It's Christmas and everything is closed and the guy has 2000 dollars worth of meat in his freezer 3. Fixing the coil is easier than replacing it very often 4. Fixing it is cheaper everytime I could go on

Yes, because the solder has a low melting point of just 500°F.

A decent flux is key, the old fluxes have been banned but they were good

And? What happened after you tried it?!

​@@westairmtl1284we've been waiting 5 years

+2Awesome Cost efficiency to the manufacturer.

ardvarkkkkk1 Is that something a manufacturer should advertise (deceptive much lol)?

+2Awesome This is more a question for the manufactures of radiators. Note that this video shows a fin coil, which is used in evaporators and condensing units for air conditioning and refrigeration systems. Regardless, the use of aluminum will result in cost efficiency, which in turn results in savings to the consumer. There are technical benefits as well, which undoubtedly manufacturers would highlight in their advertising. Either way, the manufacturers of these components are the ones that would best be prepared to detail the benefits of their aluminum coils.

Aluminium, though more efficient than copper, will undoubtedly prove less durable and will thus lead to problems earlier, causing the owner to purchase a newer vehicle sooner, it's called savvy business acumen!

Is the cost, aluminium ist much more cheap than copper

Mike Ranochak lmao exactly. Fixing a copper tube coil usually isn't worth your time. Why in hell would you try to fix a throwaway aluminum coil? Not like it was built to last anyways

No

+johnny30806 We have 2 videos showing the use of UNI-4300. In this video we show how to repair an aluminum coil, which does not involve the joining of copper to aluminum as indicated in your comments. In the following video, we demonstrate how to join a copper tube to an aluminum tube: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-DS0jhf5i5cU.html If you have not yet watched this video, hopefully it will enable you to achieve your goal. Also note that when using UNI-4300, there are 3 critical factors: 1. Ensuring the metals are clean and free of oil 2. Use low heat 3. Let the metals transfer the heat to the flux. Be generous with the flux, adding more if necessary while the metal is being heated.

I did all of this. FAIL

me too. i didn't get the syringe but that would of helped, i think