Air conditioning system

An air conditioning system, comprising:

• an air handling unit with a housing, said air handling unit including structure for mounting said unit to a roof and outside of any building structure and for connecting said unit to the supply and return air ducts of said building;
• a roof jack adapted for connection to said roof, to the supply and return air ducts of said building, and to said air handling unit;
• a condensing unit in a separate and distinct housing;
• and,
• fluid connection structure between said air handling unit and said condensing unit for transporting refrigerant therebetween.

A method for air conditioning a building having supply and return air ducts, comprising the steps of:

• providing an air handling unit with a housing;
• providing a condensing unit with a separate and distinct housing;
• providing fluid connection structure for transporting refrigerant between the air handling unit and the condensing unit;
• mounting the air handling unit to the roof of the building;
• and outside of any building structure
• mounting the condensing unit in a location selected from the group consisting of on top of, adjacent to, or remote from the air handling unit housing;
• and,
• connecting the refrigerant connecting lines between the air handling unit and the condensing unit.

A method for replacing a unitary single package air conditioning system on the roof of a building, comprising the steps of:

• removing the single package air conditioning system from the roof of the building;
• connecting an air handling unit with a housing to the roof of the building and outside of any building structure, and to the supply-return air ducts;
• providing a condensing unit with a separate and distinct housing in a location selected from the group consisting of on top of, adjacent to, or remote from the air handling unit;
• and,
• providing refrigerant connection lines between said air handling unit and said condensing unit.