Model should be printed on the side just to overcome the layer adhesion issue. I have printed mine from PA6GF with 4 walls and 40% infill and it does bend less then the original one.

To change the handle you need to partially disassemble your dehumidifier.

How to disassemble:

1, Remove two screws from right panel (when looking from the front) and two screws from the left panel and one more screw from the back side right near the drainage plug. 

2, Panels are snapped so you need to use flat screwdriver to remove them.

3, Handle is hold with two screws, one on each side. 

4, To change the new handle, you may need to remove the top cover as well (hold by two screws), just to be able to fit it into correct place.