Might be more than a home user needs….
I just put a nitrogen system in, $70k for redundant air compressors and close to $100k for the nitrogen generator which is just a big sieve that filters the nitrogen out of the compressed air plus some various storage tanks and other hardware.
CO2 I just bought a used tank, I think it was a 25 ton unit, and installed for $90k with the refrigeration and vaporization units. CO2 comes in by the semi load.
