Looking to rent current home; has zero down USDA mortgage

[Drew Brock]

I purchased this home a little over 3 years ago as my first home for $160k.  I received a zero down USDA mortgage.  Current mortgage including taxes is $925 a month.  I could rent the property for $1500.  However, once I move out will I have to refi into a traditional mortgage since it will not be my primary?  I currently do not have 20% in equity.

House is in a great school district; 3BR 2 bath 1650sqft.  AC is only 2 years old so I don't foresee any major repairs. 

**This would be my first rental property.