[ratgreen]

Originally Posted by EcoCivic

I never tried it, but I am sure it would work to some extent and it shouldn’t damage anything. However, I would personally use the Envirosafe R134A replacement or something simalar for the best performance unless you just want to try it.

If you choose to try it, keep in mind that you won’t charge the isobutane to the 30-50 PSI that you would normally charge to, the pressure will be much lower. I am not sure, but normal low side pressure (depending on a lot of things) may only be about 8-10 PSI or so according to this pressure temperature chart: https://www.raprec.com/download/reso...pt/r600a...pdf

If you want to try this, I would suggest that you charge for the lowest vent temp since I am not sure what the pressures should be and you probably won’t find much info on this. So basically that means add refrigerant a little at a time with the AC running and the fan on high with a thermometer in the vent. Once the vent temp starts to increase, remove a little refrigerant until the vent temp is at the lowest. R600A can be vented to the atmosphere, so no need to recover it.

I hope that made sense. If you have any questions, feel free to ask.

Thanks. I was under the impression Envirosafe R134A replacement was essentially r600a. Being both LPG based.

I'm from the UK so getting Envirosafe R134A replacement is expensive. R600a is easier to get.

https://www.es-refrigerants.com/docs/59264_645.pdf