SlimFit high-efficiency condensing gas boilers new features include improved boiler-to-boiler communication, Modbus and BACnet for linking with BAS (building automation systems), express set up wizard, 10 preset typical heating systems, and updated controls interface for simpler navigation, at-a-glance boiler status, diagnostics and troubleshooting. Boilers are manufactured for easy integration into existing systems. 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, lowering installation costs and ensuring timely project completion. SlimFit boilers are tested to achieve 96.1% combustion efficiency and 95.8% thermal efficiency, making the product line one of the most cost-effective boiler systems to operate and maintain for retrofit applications. In addition, simple and intuitive controls allow for minimal ongoing maintenance.