I have a Yong Heng compressor also. It is a great little workhorse for the money! I would prefer a Fahrenheit thermometer as well, but never felt it was really an issue important enough to change. I just make sure it doesn't go above 60 degrees and use it. I don't have a tank yet, so I am just directly filling my Air Venturi Avenger, AirForce Condor, and FX Wildcat MK3. It rarely takes longer than 1 and a quarter to 2 and a half minutes to fill any one of the three guns and doesn't get anywhere near the 60-degree temperature where it needs to be given a cooling-off period.