I have a stubborn nylon carpet today... I sprayed the prespray and it sat on top of the fibers. It was severly matted down with oils and nothing came up with my vacuum. It was like the carpet was made of wax.
I cranked up the heat to max!!!!!!!

put on the jet extenders to bring the vapor bar down nice and close.
I even scrubbed in the prespray with a carpet brush. then tried encap juice punched with citra-pure. DID NOT PHASE IT ONE BIT.
So I did it nice and slow. and on the bad spots I grabbed the "giant" pressure washer wand and blasted the dirt out. Then used small water claw to get the deep stuff out and injecting from the side with pressure wand..
When I was done it was night and day..... and it still dried within 3 hours that shocked me..
As far as temp goes, I have no idea how hot it was. turns out there was alot of thermostat turning radius left. More than I thought previously "top of thread".
now it was super heated. And the owner said I dont care. If you cant clean it I will replace the entire thing. I just figured I would give you a try first.....
he was stellar happy.. I was stellar worn out. lol