HF air compressor

i have a 2- 110 oil less craftsman, one is 2 hp, the other is 5.5 hp, both are over 20 years old, no problems, i use the 2 hp ok on paint gun, but on sandblaster i have to use the 5.5,,, check the cfm recommended for tool you are using, then get a compressor that won't overheat or bite the dust in the middle of the job