EPA endorses, but will not need, that wholesalers continue to keep lists of approved representatives that can help with this particular determination. Prior to fixing any AC tools, whether or not household or industrial procedure, one thing is important: Checking the strain and temperature that the refrigerant will work at. https://r407crefrigerant84792.blogsumer.com/28289007/detailed-notes-on-where-to-buy-r407c-refrigerant