However, Kachunga was taken off on a stretcher in the 19th minute with what appeared to be a knee injury.
Not minding the blow, David Wagner’s side got stronger with Aaron Mooy doubling the lead thanks to Collin Quaner’s assist.
And in the second half, strikes from Laurent Depoitre and Mooy confirmed Huddersfield victory in the ill-tempered game which saw Troy Deeney and Jonathan Hogg given the marching orders.
With this victory, the Terriers climb to 11th on the log with 21 points from 18 games. They face Southampton in their next game on December 23 at St. Mary’s Stadium.