I run mine at half way point on the setting, I don’t want it that hot, plus it has a tendency to eat through the extreme brushes so I tweak mine so it’s hot enough to make a difference
I know there are other brushes which cope with heat better, but after over 20 years on poles my body needs the lightest equipment
Maybe on a first clean I’ll turn it up to full blast
on leaded lights pvc, it will take off the lead that’s stuck on epesially older frames, so I will turn it off or right down on a higher flow
I only use hot through colder months mines off now except for new cleans, many won’t agree as to why but it’s my preference for usage,
Hope you enjoy the heater