Fireplaces often lose a substantial amount of heat when the firebox is connected to the chimney. With their smaller firebox, as well as the use of a vent pipe instead of a flue duct, wood stoves are more efficient at producing heat. Wood stoves can be very efficient at burning wood compared to other types of fireplaces. The efficiency rates of wood stoves can range from 60 to 90% depending on the stove model, while the efficiency of open wood fireplaces can be as low as 10 or 20%.
A wood stove is likely to be more than 65% efficient, while an open fireplace is 30% efficient at best. Stoves are usually (but not always) made of high-strength steel, so they offer radiant heat and also act as radiators. While open fireplaces tend to have efficiencies of 10% or less, stoves tend to have much higher efficiency rates. You don't need, nor do you want, a giant stove in a small space, because you'll be sweating when it gets really hot.
Because traditional open fireplaces were never designed with efficiency in mind, there's not much you can do to improve the heating efficiency of your open fireplace. The average efficiency index of a wood stove can be between 60 and 80%, but it can be higher or lower depending on the stove model. Wood fireplaces can be an inefficient way to heat a home, but they can provide the most realistic fireplace experience of all the different types of fireplaces, with a full experience of the sounds and smells of fire. When it comes to the efficiency of a fireplace compared to that of a stove, without a doubt the most efficient option is the wood stove.
The EPA explains that there are two different types of efficiencies used to describe how well a wood stove converts fuel to heat. The ventilation grilles of a wood stove can be adjusted, allowing you to control the amount of air that reaches the fire and, therefore, control heat production and the efficiency of the fire. The EPA also explains that overall efficiency is a better measure of how well a wood stove converts wood into usable heat for your home. Stoves are typically installed inside open fireplaces to help increase efficiency and heat production when burning wood in the home, but they can also be installed in many other places in a house where they can be placed.