What size air compressor should I look into that can run a DA Sander and an Impact wrench, possibly a cheap paint gun, too.

 

I use a two stage 7hp with a 60 gal tank for my DA.

 

I consider this the bare minimum: Ingersoll Rand® 3 HP 60 Gallon Single Stage Air Compressor - 3496111 | Tractor Supply Company Used one for five years daily, but it never cut off while using.

 

Cool, thanks guys. That 60 gal isn't too bad pricewise.

 

As usual, if you can afford to go bigger, do so.

 

ditto to what the others have said. I use my craftsman 25gallon direct drive compressor for most of my air tools. It can handle the impact wrench, paint gun, and i've pushed it's limits with sandblasting. It can not keep up with da sanders. I had to buy an electric da sander. Go bigger and use a two stage oiled air compressor. You'll be glad you did. I sure wish i did.

 

Thanks, guys. I think I have come to the conclusion that I am only going to get something that can handle impact wrenches, and maybe a paint gun.

I think I'll just a better electric sander than what I currently have.

Maybe I'll go with a 25 gal like you have, Ron.

 

Size of the tank is almost meaningless. What you need to do is find out how much air each of your tools use and buy something that delivers as much air @ 90PSIG as the most hungry tool uses.
Your typical 3 peak horsepower cannot keep up with a DA. But you will be able to use it for several minutes before the air pressure runs down to where you can't use it anymore.
I have a 3 peak horsepower Campbell Hausfeld and it does run out of air occasionally but I can always find other stuff to do while it is recovering. I even have a bead blast cabinet that I do small parts in.
STAY AWAY FROM THE OILFREE OR OILESS COMPRESSORS!