Weil-McLain’s Stainless Steel Vertical Firetube (SVF) boiler features thermal efficiency up to 97.1%, easy installation and maintenance, the intuitive and user-friendly Unity control system, and Weil-McLain boiler design reliability and longevity, the company says. Available in 750 and 1,100 models, the SVF line features a clover-shaped stainless steel fire tube heat exchanger for corrosion resistance, a new and bold exterior look, and user-friendly controls to make installation and operation easy. The SVF also is ideal for applications calling for a cast iron boiler complement. Weil-McLain. www.weil-mclain.com