Lower energy efficiency standards could mean that you pay more for energy. They blow air over a wet fiber pad and as the moisture from pad evaporates, the air gets cooler. A portable air conditioner has a higher BTU rating due to its mobility. A portable air-conditioner only requires a tiny sliver in a windows for the intake/exhaust line. In addition to its ease of operation, the Blast Portable AC is also 100% magnetic and comes with a 30-day money-back guarantee. We examine the pros and cons below of a Portable Air Conditioner Unit. Portable air conditioners are more energy efficient than window units or central air conditioners because they are smaller. The regular air conditioners charge a lot of money and increase your electricity bills. A closed circuit with a gas refrigerant cools the air. The Blast Auxiliary Portable Ac, powered by lithium-ion batteries, is a portable air conditioner that can be recharged. It is a very powerful and mobile model, which is also easy-to-install. Portable The two most popular options available today are air conditioners or Window air conditioners. Around the globe, scientists work hard to create air conditioners that are more energy-efficient.