The Outdoor NeoTherm is a direct vent, sealed combustion, condensing boiler or volume water heater designed specifically for outdoor installations. Company officials said these systems meet or exceed all applicable ANSI testing demands for outdoor use, and reach thermal efficiencies as high as 97%.

Outdoor NeoTherms feature an ASME stainless steel heat exchanger, direct spark ignition system, low NOx emissions, and modulation with a 5:1 turndown. They are built standard with the upgraded Laars Integrated Control System which includes a color touchscreen. The PID control integrates with BAS and can become part of multiple boiler sequencing, including a cascading feature that rotates load for up to eight NeoTherms.
These NeoTherms are natural gas or propane-fired, and with eight sizes ranging from 150 to 850 MBH.