The NCC199CDV condensing tankless water heater is approved for common-venting up to six units in commercial applications, including larger apartment buildings. Has a thermal efficiency rating of 98 percent, which is the industry’s highest and earns it an ENERGY STAR rating. Maximum flow rate of 11.1 gallons per minute.
Canadian Standards Association approved for common venting in Canada and the U.S. for flexible installation on commercial job sites.