Video Case Studies

Triangle Tube Prestige - St. Patrick's Cathedral

St. Patrick’s Cathedral, located in the heart of New York City, is an international landmark and a source of inspiration to the more than five million visitors of every religious denomination welcomed each year. Beneath the floors of the beautiful 138-year-old cathedral lies new cutting-edge HVAC technology. A state of the art geothermal heating and cooling system replaces its system of steam radiators and works to heat and cool the more than 76,000 square foot cathedral. Triangle Tube is a part of the large undertaking designed and executed by Landmark Facilities Group