Cozy High-Efficiency Direct Vent Furnaces are a perfect heating solution for single-family residential, rental, vacation homes, apartment and below grade heating applications. They mount easily on any outside wall or, if vent extensions are used, on inside walls for central placement within the living space. The sealed combustion chamber draws air for combustion from outside and exhausts through a concentric vent-pipe system to the outside - retaining heat and maintaining interior air quality. The 24 volt, draft induced units include a standard vent kit that can be cut to fit wall thicknesses from 5"- 32" and includes an external vent cap which eliminates the need for expensive venting and unnecessary labor. Enjoy 80+% AFUE efficiency by selecting a High-Efficiency Direct Vent Furnace from Cozy, the trusted name in zone heating.