I had my pwr steering hose changed this weekend and since then im getting that noise you get when your fluid is low, the guy said that its air in the system and it will come out but its been 2 days since i had the work done and its still making that whinning noise....

 

Do a Search.

 

Yes, sounds like you do indeed have air in the system.
Try this to remedy the situation on your own if you don't want to bring it back to the shop.

http://www.explainers.com/images/wor...es/sample5.pdf