The air conditioner has three fan speed settings and a 24-hour programable timer, making it highly customizable. You do not need to worry anymore about paying for a professional installer or risking a back injury by lifting the window unit. Evaporative coolers are up to 75% energy-efficient in low-humidity zones. The main difference with window AC is that the heat is released through the portion that hangs from the window. Portable nature of the product also gives users more control over the environment. Some guests may not notice the flowers, linens, or sign-in table, but everyone will notice if you are overheating. Heat pumps are whole-home cooling systems that displace heat instead of creating cold air. This allows you to enjoy cool and comfortable air wherever you are, without the need to purchase multiple units. Check how many BTUs per hour (British thermal units) your AC unit must generate for the size room. In a single hose portable air conditioner the AC pulls the warm air from the room and runs it over the refrigerated coils. You won't need to wait long. These coolers are commonly used in factories to ensure that equipment or workspaces do not overheat.