What type of air conditioner can bring in outside air?
What you're after is an HVAC system.  Heating, Ventilation, and Air Conditioning.

Excerpt from HVAC Wikipedia article:


  The three central functions of heating, ventilating, and
  air-conditioning are interrelated, especially with the need to provide
  thermal comfort and acceptable indoor air quality within reasonable
  installation, operation, and maintenance costs. HVAC systems can
  provide ventilation, reduce air infiltration, and maintain pressure
  relationships between spaces. The means of air delivery and removal
  from spaces is known as room air distribution.