Monessen is the leading manufacturer of vent free fireplaces setting industry standards in vent free technology. Vent free gas fireplaces bring style, warmth and comfort to your home without the need to run venting. The zero clearance design allows ease of installation almost anywhere. Monessen’s vent free fireplaces come in traditional and contemporary styles and shapes, perfect for the decor of your home or business. Check your local codes regarding vent free products as they are not allowed in some states.