TSI Supercool 28399 HVAC Leak Stop 2-oz. Syringe (60 mL) with Application Hose, 2. Fluid_Ounces

Ok

Long story short, this product is so much easier to inject using an HVAC dye injector. A nice metal one is available for $30 on Amazon. I have no idea why it doesn't ship with one or that the manufacturer doesn't recommend it. They really should! The syringe it comes with sits near the edge of structural failure and needs modifications to even work! Short story long, my uncle fixes people's HVAC on the side for cheap. He swears by this stuff as the first response to slow leaks. However, the directions/videos on how to use this product are a joke. They show technicians just injecting the stuff easily and quickly in 30 seconds. This is not going to happen if you use the syringe. The pressure inside an R410a system is near 150 PSI. For me to use the syringe, I had to first stop the plunger from bending by sticking pieces of extra plastic around it so it would not bend. I had to use a washer on the front to stop the caulk gun from destroying the syringe front. Then I needed an extra clamp to help close and hold the caulk gun handle. Even then, I could only inject about a hair's width worth every 5 minutes. If I clamped it and let it sit, the system would eventually pull some out of the syringe, and I could repeat this. Before I could get this to work, the check valves were both locked up. I had to extend the Schrader valve trigger on the front valve and poke out the rear check valve because the tubing had excessive pressure that had them locked up. This was extremely dangerous. When it release it sounded like a gunshot and sent the Allen wrench I poked it with flying out of sight. I nearly got a hydraulic injection wound from a stream of this blue stuff! Do not try this! Once I was able to get the blue stuff flowing again, the issue was that the syringe would always come loose because it only needs one turn to start leaking, so about 3/4 of the product ended up on the ground as I messed with it. I ordered another tube because they are only $20. I also ordered a metal HVAC dye injector for $32 off Amazon. It just opened it all the way, squirted the blue stuff in, closed it, and bled out the air until blue came out the tube end. I connected it and turned it a half turn every 10-15 seconds until it was empty. So much easier, no waste, and much safer! Please just spend the extra money to inject this, especially if it has a chance of working. $55 is much cheaper than $500 or $5000.

Worked out to my car AC. All the gas leaked within a week. Refilled the gas and is successfully cooling.. one more problem faces is connector didn't work out so opened the cap of tube and directly applied

عندي مكيف اعبية فريون مرتين في الصيف. فنيي التبريد مايبون يشتغلون لذلك شريت هالابره ورحت محل قطع غيار تبريد واخذت فريون وساعه وكذلك محول لان اللي اللي معه حجم صغير والفريون الجديد اكبر. المهم استعنت بمسدس السيليكون لاضغط المادة في المكيف وبعدها عبيت الفريون. والحمد لله الحين 4 شهور والمكيف بارد وممتاز. اتوقع اللي مايمدحونه يا انهم ماعرفوا يضيفونه او التهريب قوي

Did not fix even a tiny leak.

I read the instructions and the reviews and agree that it would be impossible to inject into a pressurized system. I tried it…and could not get it to flow. I then used my recovery machine to pump the Freon out of one of my shorter lines and send it to the ac unit collection tank. Once my line was at a vacuume, I tried to inject the fluid. It injected into a vacuume line but took a lot of effort to flow it. But got it done. Once I had the fluid in the line…I left the line closed off and turned my unit on in heat mode. As the unit ran, i slowly opened the line valves to put pressure back into the lines. Very slowly so I would not stall the ac motor. Once the line I injected was fully open, I ran the unit in heat mode for 15 minutes to circulate the fluid across 5 lines totaling 200 ft. Then I let it run in cooling mode for 30 minutes. After that..I rechecked my system using a leak gas analyzer and the very slow leak I had which prompted me to buy this product was gone. Don’t know how long the leak fix will last but at least I can get thru the summer with out having to dismantle, reflate, re nylock , retorque connections. Plan to put in it heat mode for a few minutes every day over the next week to make sure my reversing valve does not have problems. My advice is if you don’t have a recovery machine to move Freon out of one line , you should watch a few YouTube videos about how to pump down your system. Pump down lets you move Freon out of the lines and back into the ac unit. Pump down works well on systems with short to medium line lengths. I have 200 ft do pump down will not work for me. Also, don’t forget to reopen slowly the cakes you used to pump down your system.