The primary disadvantage of a ventless fireplace is that it doesn’t have an exterior venting system. This means that the byproducts from combustion are emitted into your home, which raises some safety concerns. In addition, ventless gas fireplaces produce moisture as they burn—and if there’s no ventilation, you could end up with a mold problem.

Home insurance prices depend on where you live and the individual insurance company's policies. Some insurers charge a flat fee for fireplaces or wood-burning stoves, which is often a few hundred dollars per year. Other insurers base this fee on a percentage of your annual premium. You may want to check your current or prospective policy before beginning this project.

A grease fire starts if hot cooking oil comes into contact with a heat source, such as an electric heating element or the flame on a gas range. Once the grease is ignited, it can be very difficult to put out. 

If a storm or other natural disaster occurs in your area, you may not have immediate access to help. According to the U.S. Federal Emergency Management Agency, keep a disaster preparedness kit in your home with enough essentials to sustain your family for at least 72 hours. Put this in an easily accessible location to have it handy in case anything unthinkable happens.