The Weil-McLain ECO Tec boiler is designed for residential space and domestic hot water heating, available in both heat only and combi versions. It features a durable stainless steel fire tube heat exchanger with sound dampening air silencer, corrosion resistant condensate collector base, an easy-to-use touch screen display, built-in zone control, and simple set-up wizard, the company says. Weil McLain.