I messed up my back this spring, so my wife insisted that we get portable a/cs instead of window units. Did a fair amount of homework and accepted the fact that portables just aren't as efficient as window units, but had little choice. Several review sites listed Honeywells as decent units and the 5 year parts and labor warranty, as well as the fact that this unit draws about an amp less current as a comparable Frigidaire, made me order it (not available in Best Buy stores). Just to cover our bases, we also ordered a Frigidaire portable unit. We put the Frigidaire in my wife's office and the Honeywell in our bedroom. There was no comparison. The Frigidaire, on low, had my wife talking about how cold it was in her office. The Honeywell, on the other hand, in the heat of a 90 degree afternoon, on high, could do no better than about 77-78 degrees, shades drawn, room dark. The unit is rated for a 250 square foot room, our bedroom is about 150 square feet and unless you were standing within about 2 feet of the unit, you couldn't feel any cold air. We returned the Honeywell (an easy return, thankfully) and replaced it with another Frigidaire and we are satisfied.