The Enviro E25 gas fireplace insert is a clean, reliable way to transform an existing masonry fireplace into an efficient, everyday heat source, delivering up to 28,000 BTUs and warming spaces up to 1,600 sq. ft. with steady, comfortable heat. Designed with a large viewing area and realistic log set, it brings the look and feel of a traditional fire without the hassle, while features like a variable flame, optional ignition systems, and built-in convection fan provide both control and consistent performance. With its compact installation depth, durable steel firebox, and flexible finishing options, the E25 is a practical, long-term solution for homeowners who want dependable warmth, improved efficiency, and a fire they can enjoy with confidence all season long.