When purchasing a commercial fryer, sizing is a key factor, so consider the volume of fried food the operation will prepare. In addition, consider the configuration of the fryer in relation to the menu items the operation will produce as some designs work better with certain foods than others.

For longer oil life and better food quality, consider a high-grade oil filter. Busy operations will benefit from auto filtration, a popular option that is safer and ensures consistency. Central oil filtration and recovery pumped through the kitchen are designed for larger operations, while built-in filter drawers provide added safety and simplify operation overall. 

Digital controls add speed and provide consistency. Programmable controls and buttons that highlight specific menu items fry foods for a predetermined amount of time and increase consistency. 

Maintenance needs are another consideration when specifying fryers. For example, open-pot fryers are the easiest to clean, while tube-type models are the most difficult. Automated basket lifts, a popular fryer option in high-volume operations, can help save labor.