Gotta say... On FB one particular manufacturer rep and trainer called me a hack, a liar and fake because I used this exact product on a system with several evap leaks. Nice way to attract potential clients to your well known world wide brand lol. Anyway, here is a podcast I did on the process of leak checking. https://anchor.fm/hvacknowitall/episodes/Process-of-Refrigerant-Leak-Checking-e10ktvq 1) Determine there is leak first. 2) Find the leak in a methodical manner. 3) Take the correct course of action based on the situation. (I've included 3 untraditional ways that I've seen work) I was never a fan of sealants myself, until Cool Air Products twisted my arm and it took a lot of twisting, trust me. I openly tried it on several out of warranty systems with evap leaks that were very small, from resi to data center systems to walk ins. My education through this taught me that older polymer based sealants could harm systems as they react to air/moisture and harden. Oil based sealants seal mechanically by layering oil over leak sites and don't harden, they become miscible with system oil and move through the system. If you ever changed the oil or removed the compressor the sealant goes with it. Some facts, large residential companies have began using this on new installs as warranty coil replacements have plagued their business. A very large manufacturer is testing this as they spend 100,000s in warranty coils each year. Castel, Italian maker of valves, driers, fittings have approved it for use in their products. A well know appliance company is using it as well. The names can't be mentioned due to NDAs. The moral, is to keep an open mind, test and know and don't assume. Do the research, talk to people that can provide good info and then you make the right descion and feel comfortable doing so moving forward. Happy HVACing!

Posted by HVAC Know It All at 2021-05-13 12:25:13 UTC