The Energy Pro is a 92.6% efficient gas fireplace—the most efficient ever made. It’s also certified as a furnace (Z21.47), and is a prime example of how Heat & Glo® continues to harness innovation in technology, design and safety into every product. 36-inch viewing area 92.6% efficiency Certified as a furnace (Z21.47) Versatile installation opportunities 7-piece HD log set Available at select hearth providers