The Archgard 40 DVI40N will heat up to 2400 sq ft. ensuring you and your loved ones can enjoy your fire whether in the same room or in another. The German engineered quiet direct drive heat distribution fan operates at 76% efficiency while pushing heat into your home. The panoramic Wall to Wall Flame fills the firebox to create the warm and relaxing ambiance to carry you through those cold winter months. At 40,000 BTU’s, the 40 DVI40N is the most powerful fireplace insert that Archgard produces. Its size is designed to fill even the largest fireboxes. Archgard’s 40 DVI40N fills and heats your large spaces with warmth and style.