I have a Hesstar 1.0HP one. Have been using it for nearly 4 yrs. It says 'auto-evaporate water, no need drainage', but after about 1.5 yrs, the small PVC plate provided to put at the drip hose (sticks out about an inch) gets full very fast after turning the unit off. So I just bought a rubber hose from hardware shop and extend the drip hose to my bathroom.

As for the exhaust hose mounting, I just grab a piece of plywood about the size of a multisheet glass and fix them in after cutting a hole to fit the hose.

And one more thing, this unit needs the usual cleaning like wall-mounted split units (inside, not just the filters) when the wind felt weak. I was fed up after asking few contractors because they said never cleaned this type before so not interested to do the job. The HQ says need to deliver the unit to them for cleaning service, but that things is darn heavy... So I decided to dismantle the covers and clean the inside myself. Did it twice already. So far so good. Save some $$ too.