I believe that it is a common claim (common to different manufacturers, e.g., OGSI <
www.ogsi.com > for a U.S. manufacturer with that claim) that, under ideal conditions, the sieve will last for the lifetime of the machine. Ideal conditions meaning not exposed to temperature extremes, moisture, and dust, with regular filter cleaning/replacement as appropriate.
At 10 LPM, a newbie might benefit from less frustration on having to stop and get the cylinder(s) refilled, but I'm sure there is another opinion.
I think you would have better luck searching this site for suggestions on Hot Head use. If Ed Hoy recently acquired rights to the Hot Head, I doubt whether they have done any testing, especially since they have only recently moved to retail sales. I think Delphi would have more experience since they upload videos showing the use of some of the products they sell.