Instruct: Classify Amazon reviews into positive or negative sentiment
Query: weak conditioning and the paragon of flimsiness

I finally installed the thing afer jumping through quite a number of hoops. Although the size of my room requires 5500 btu, this unit (supposedly 7800 btu) cannot keep it cold.On a smaller note, here is one more present from geniuses of engineering at Panasonic. To take out the air filter on the unit you need to lift the grill, which you are supposed to do every week to clean the filter. First time i did it, i broke the plastic tab that keeps it on the cabinet, so the grill is hanging loose now. Whole thing is made out of flimsy plastic and generally have design and robustness of a small plastic plane model. Another part that breaks immediately is some flimsy thing they call frame guide. Whorever designed it should go back to Japanese prison where he must have taken his engineering classes.