There are some products on the market that bill themselves as premium replaces to older technology, however then fall short of their promises. Copper coated cooking ware is 1 example that comes to mind. I saw those commercials where the announcer claimed they were capable of total-nonstick cooking at medium to high heat with no oil or butter. They’d literally pan-fry a slice of cheese and then flip it to show the pan’s capabilities. But then the manufactured pans had a lower quality-control put into them and several people care about me were disappointed when they couldn’t outperform our ceramic coated cooking ware. I guess the few people who were blessed enough to get wonderful pans were happy, however they were outnumbered by others who purchased defective products. It’s smart to remember that something isn’t better simply because it touts itself as an improvement upon its predecessors. If you absolutely believed the marketing hype around some portable a/c models and manufacturers, you’d believe that they are these wonder machines that outperform window a/cs with much easier replacement and maintenance. Unblessedly, portable a/cs create modern problems that do not even exist in the first place with tried-and-true window Heating plus Air Conditioning units. Window a/c units and split-style Heating plus Air Conditioning systems place their sizzling compressors outside of the home. With the former the compressor is right outside the window, in the latter it’s in a metal enclosure outside. Portable a/c units have a compressor inside the machine and your home, which creates heat while cooling some of your air. To offset the heat, some of the chilly air is recycled to cool the compressor and it’s blasted outdoors as waste.