I purchase this for my own units. Did not make sense to buy the amount I needed because of the price of less amounts of R 410a. So I checked with local suppliers for a 25 lb.tank with my company discount and thought I could find it cheaper on line and I did RCi had what I wanted and the trust with the choice of free delivery. You do need to do your work on finding a website that will not rip you off . Refrigerants Center inc is the place to check out. Oh ya, used the new can of refrigerant and it worked like a charm as long as you know what you’re doing. Thanks for a reasonable price and trusting on line store.