There's no shortage of house-maintaining tasks for homeowners to think about from day to day and season to season. For some, that's simply a matter of kicking the HVAC unit over to air conditioning mode, but if your home doesn't have a system in place, a top-rated mobile air conditioning unit can be a functional and affordable fix. The level of upkeep for the device might also be a factor in your decision making, as mobile A/C units need regular maintenance to function properly. However, older units instead typically feature a built-in reservoir where the condensation is collected during usage. If you have one of those units, you will need to empty the reservoir with some regularity to avoid any potential performance issues.