mine is a hotsy. 2.4 gpm at up to 230 f
I have never used the brand you mention, there are many of them, but hot water does really help imo
The hot water melts the grease and keeps it from sticking to everything as much, but it is still hard to get every nook and cranny. Digging the caked material out by hand seems just as fast, them pressure washing the the rest out till its clean. Doing a good job can take a coupler hours.
It really protects the machine from the possibility of fires and rusting out critical tube lines and other components. Mine get a good cleaning at least anually
I try not to spray high pressure at any of the electronics, guages, seals or couplers.
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