The price of a gas fireplace insert can range from $2,000 to $4,000. The condition of the chimney and the fireplace model selected are two key features that may affect the price. Gas inserts can be vented or unvented.
An insert allows homeowners to get the benefits of a gas fireplace with lower energy costs. Although this is a moderately priced investment, it is one that pays for itself over time in the form of lower heating bills. This is particularly true for ventless inserts. The National Association of Home Builders lists a gas fireplace insert as one of the most sought-after features by homebuyers, as of 2015.