NeoTherm is a direct vent, sealed combustion, condensing boiler with 90+% AFUE that modulates with a 5 to 1 turndown. The boiler features an ASME stainless steel heat exchanger, integral boiler pump and low NOx emissions, for a package that's easy to use, and easy on the environment. NeoTherm is built standard with the new LAARS Integrated Control System℠ that puts the ignition control, temperature control and high limit in one user-friendly device that does it all.