The Desa Tech KV1800A is an unvented gas heater that offers efficient and convenient heating solutions for various indoor spaces. With its adjustable BTU settings, ranging from 6,12, and 18,750 BTU, you can customize the heat output to suit your comfort level and room size. The heater operates on natural gas and features a piezo ignition system for easy and reliable startup. The compact design and wall-mounting capability make it an ideal choice for space-saving installations. Enjoy warmth and comfort in your home with the Desa Tech KV1800A gas heater.