Is “direct vent” the same thing as Unvented or ventless?
No. Direct vent fireplaces use a sealed glass front to completely isolate combustion gasses and moisture from your home. This is especially important in new construction homes that are built very tightly to comply with today’s energy codes. Un-vented fireplaces are designed to expel combustion gases and moisture directly back into the room. Ventless or unvented are illegal in some states and municipalities.