We will work on vent free units, but we want you to be aware that they can cause health problems, both for you and your home. For more information on vent free gas appliances, and why many in the industry think they are a bad idea, click here. There are good, efficient, attractive alternatives to vent free logs. Even if you do not have a chimney, it is almost always possible to install a direct vent gas stove or fireplace. If you do have a chimney, a direct vent gas insert is a good, reasonably priced alternative. Direct vent appliances are the best choice for a healthy, safe, efficient and clean burning decorative gas appliance.