Aain® LX36575High Accuracy Electronic Digital Refrigerant Charging Weight Scale for HVAC 220LB

for what I mostly need this for (domestic refrigerator) repairs on sealed systems I checked put a tank of 134a on it weighed 97.005 oz zero and removed tank read -97.005 oz VERY accurate. and the price is way better than name brands TIF etc

I like the scale it does exactly what I needed.

Bought it through Best&Fast, received the scale 2 days ahead of the expected date, impressed by the fast shipping.I use it for repeated charging of a couple of R134a and R1234yf test systems in our workshop, quite easy to use.Zero issues (after 2 months) with a rather heavy usage, a nice sturdy scale for the buck.

I tested this scale with several identicle containers using specific amounts of water and found a plus to minus (+/-) too great to call this scale highly accurate. In short, it took nearly a half ounce before the scale would react to the added or subtracted weight. Probably acceptable for weighing parcels if you rounded off to the next higher number, but NOT acceptable if you're weighing exact weights of refrigerants in small AC units, especially when monitoring weight being added in gas form. It would'nt be consistent with the SAME test weight. Not accurate enough, any / all scales need to be consistent.

This scale does not update quickly enough or keep accurate weights to add freon to a system. Ended up overfilling based on the numbers this scale provided, and it cost me money and time to recover the freon and reinstall.

Fast delivery and easy to use.