An electric fireplace runs on electricity, which is less expensive as compared to fuel and gas both. The heat is adjustable and can be set accordingly. This benefit was never available in traditional style as there was little control over how the fire looks. The fireplace is not heated up after usage, which reduces the chances of getting burnt accidentally. Especially with small children and pets, this is a significant advantage.
Every technological device designed today has its benefits to human society. However, it is not always the case that we are benefiting from the devices we are using. There will always be bad effects of these only that we are not aware of it. We may be creating a solution but part of it was another problem. An example of advancement of technology today is the pellet fireplace insert. While it brings is luxury and comfort, it may bring us some discomforts also. So what could possibly be the advantages and disadvantages?