Petg hairy prints

Have used my m300 dual a couple of times with the supplied material (petg) and have to say really disappointed with the quality of the prints they keep coming out really hairy regardless of the settings
why is this ? I somewhere else on this forum that it needs a replacement hot end??
what ? machine is brand new and cost me £4000 surely everything should be perfect?

Hi, Robert.

Make sure that the ambient temperature doesn’t exceed 28°C [82°F]. For smaller parts you can increase fan speed in Z-SUITE.
If the issue persists despite meeting these requirements, let us know via support form.
The thread that you’ve found regarded the printer that has been used for some time and it was M200 Plus, not new M300 Dual.