Power Direct Vent
The eF Series® utilizes exclusive designs and technologies for unsurpassed efficiency, installation flexibility and quiet operation.
Power Direct Vent ASME and Non-ASME models utilize a co-axial concentric (pipe inside a pipe) venting system that draws air in for combustion through one pipe and exhausts products of combustion out the other.
Light Duty Power Direct Vent models are the solution for installations that lack sufficient combustion air or where an outside wall for ventilation is not readily accessible. All models can vent vertically or horizontally and are also approved for direct-vent, closed combustion applications.