Trane Air Conditioning Chiller Units for Air Conditioners for 67000 sq ft office. 25,000 per set one set will do 40% of the floor area and one set will do 60% of the floor area so the total will do 67,000 sq ft but separately they will do about 40,000 sq ft and about 27,000 sq ft. These chiller units were installed within the last 10 years probably about 8 years old.This item is in the category "Home, Furniture & DIY\Heating, Cooling & Air\Air Conditioners\Central Air Conditioners". The seller is "floor-trader" and is located in this country: GB. This item can be shipped to United Kingdom.