That's me. The Lec Frigidaire Patent Combined Heating and Compressed Air System is running in heating mode at this time of year.
The cfm from a single unit very low, would take ages to blow a tyre up, you'd need to fill a tank first to get the rush of air needed to seal a tubeless tyre bead against the tim.
They do use them for airbrushing but I'm not keen on the idea as you get a lot of oil in the air.