We started using these Hurricane canless air tool to replace the cans of air we purchase. Canned air has additional chemicals in it that are not good for the environment, and you pay a lot for compressed air. The Hurricane is a high speed air pump with a nozzle. Its power source is rechargeable battery.
We use the ESD-safe model (a bit more expensive) to blow the dust out of computers. The air output is not quite as focused or as high a velocity as a traditional can of air. This tool is also noisy. It has a high pitched shriek. Across the office it sounds like a dentist drill. Even through these shortcomings, it is a cheaper and greener solution than canned air.