Review on Dual Automatic Recycle Guard R134A by Leonard Beard

I only gave this 4 stars because I just installed it and haven't had much to do with the AC since. Something in the lower 70's doesn't match the demand for air conditioning. It didn't initially go through the high pressure side, but I found that the seal in the hose had come loose and blocked the passage. Hose seal repaired and everything works. The most important thing for a technician to remember is to release the vacuum to reset the valves to reset the filter to trap contaminants. Otherwise it seems to work as advertised. And if new and internal filters are not clogged, this will NOT noticeably slow down the recovery or charging process. It's too early to really know how well this will work, but so far so good.