The DC inverter portable air conditioneris made to cool spaces without windows. Its designed works like a fridge, where air inside the space is cooled and circulated. Since this kind of air conditioner does not need a separate condenser, it is more efficient compared to window air. Many industries utilize DC inverter air conditioner units. The following applications show how essential these air conditioners have become: 1. Residential Use. When choosing an inverter air conditioner for a portable DC, there are several factors to consider. 1. Cooling capacity and BTU rating: It is important to choose. Q: What is the main benefit of a DC inverter air conditioner? A: DC inverter air conditioners save energy, provide stable temperatures, and operate quietly by.