Weil-McLainLoaded with a winning combination of features, Weil-McLain proudly introduces the WM97+ Boiler. The WM97+ is a wall mount boiler that comes in 70,000 and 110,000 Btu input models, both at a AFUE rating of 97%. The WM97+ offers a unique condensing stainless steel heat exchanger, built in boiler circulator and a built in primary secondary option. For more information, visit www.weil-mclain.com.