a product dispenser reconfigurable in the field includes a housing , at least one tower unit , and a removable ambient box . the at least one tower unit includes at least one dispense point , whereby a product or diluent is delivered from a diluent or product source to the dispense point . the ambient box is an insulated product path that is adaptable to at least one external source and the tower units or the dispense points . the external source may be conditioned through external means or may deliver an ambient temperature product , wherein the product circuits passing through the ambient box may deliver product to any tower unit , thereby providing increased product variability within a same product dispenser . the product dispenser still further includes a tower structure that is removable without disabling the product circuits , and a method of merchandising on the tower structure .