Pete - I too am having issues keeping my Hemisphere cool. Last week I was in the DC area where the temps were in the mid-upper 90's each day and it was a struggle to maintain 75-76. Seems harder to cool than any unit I have ever had previously. It was operating so poorly that I got on the roof to ensure there wasn't some packing material hindering flow. I guess I am glad that the unit is prewired for a second unit in the master bedroom - if we spend much time in the south during the warmer months I will be making the addition.
Working because we have to - camping because we want to.
2015 Salem Hemishere 337 BAR
2014 Ram 3500SRW Laramie 6.7 I6