Mounted with Alfa Laval, 90 Sq.Ft., 316 SS NB # 13330 35 psi at 300 degrees F., serial # 17322 spiral heat exchanger. Total condensing surface area is 360 Sq. Ft. Note ** 90 sq. ft. price is $13,500.00 can be sold separate . 270 sq. ft price is $ 40,500.00 can be sold separate .