When considering the size of your warehouse you should note a few different pieces of information. One of the key differences between sweepers are the different cleaning paths and hopper capacities. On the one hand a larger cleaning path and larger capacity makes it easier to clean a large room quickly without needing to empty the machine frequently. On the other hand a larger cleaning path also means less maneuverability. You should consider the width of any aisles or hallways within your warehouse when looking at the cleaning paths of different sweepers. You don’t want to sacrifice maneuverability for and increased cleaning path if you have any tight spaces you need to clean. 

Alternatively if you are cleaning a large open space with your sweeper, you are going to want a large sweeper that cleans a wide path and can hold a lot of debris. Additionally, you might want to consider a battery-powered model that can clean even quicker if you have a large warehouse or multiple floors that you need to clean.