Burnham EMP140E-TB EMP 140 MBtu Input, 87% AFUE, 3-Pass Oil Fired Cast Iron Water Boiler Chimney or Direct Vent (Packaged) The EMP boiler is versatile, offering both chimney and direct venting options, providing flexibility in installation based on your space and venting ...Burnham EMP140E-TB EMP 140 MBtu Input, 87% AFUE, 3-Pass Oil Fired Cast Iron Water Boiler Chimney or Direct Vent (Packaged) The EMP boiler is versatile, offering both chimney and direct venting options, providing flexibility in installation based on your space and venting requirements. This packaged unit comes ready for installation, making it a convenient and cost-effective solution for upgrading or replacing your existing boiler system. Ideal for heating large spaces, it can be used in both residential and commercial settings, providing reliable, long-lasting heating performance.