Weil-McLain® is now offering an enhanced line of its SlimFit™ high-efficiency condensing gas boilers. New features include improved boiler-to-boiler communication, Modbus® and BACnet® for linking with BAS, express set up wizard, 10 preset typical heating systems, and updated controls interface for better navigation, at-a-glance boiler status, diagnostics, and troubleshooting.

The company says the boiler’s narrow housing offers improved maneuverability for confined spaces and weight restricted areas, a critical solution for commercial retrofit projects. The units come completely factory assembled allowing for on-site plug-and-play installation.

SlimFit boilers are tested to achieve 96.1% combustion efficiency and 95.8% thermal efficiency. Other key features include five sizes from 550,000 to 2,000,000 Btuh, low NOx less than 20 ppm, modulating burner with up to 6:1 turndown ratio, fully customizable outdoor temperature reset curve, and more.