I've picked a portable HVAC unit. It's a 2.6 KW 10,000 BTU model. The only way I will be able to vent it is by cutting a hole in one of the glass windows and and using the special fitting. I wanted to test the unit out in the mean time by just throwing the vent hose out of the door but of course the door is still open quite far like this. Is this not going to allow me to get an idea of how well the unit works with the door open so much or will it be drawing to much warm air in?