The Outdoor NeoTherm is a direct-vent, sealed-combustion, condensing boiler or volume water heater designed specifically for outdoor installations. These systems meet or exceed all applicable American National Standards Institute (ANSI) testing demands for outdoor use and reach thermal efficiencies as high as 97 percent.

The calculator includes fields for 4, 15, and 30 percent compression in flexible ducts.

As the first of its kind in the U.S., the standard outlines requirements and best practices for geothermal project design, installation, commissioning, and more in the U.S. and Canada.

With the release of its “Standardization Roadmap: Energy Efficiency in the Built Environment,” the American National Standards Institute (ANSI) said industry, government, standards developing organizations (SDOs), and other stakeholders now have a national framework for action on future energy efficiency standardization.