Electric fireplaces are easy to maintain and do not require lots of cleaning. They don't produce ash and waste and are relatively maintenance free. Smoke and ash can also be hazardous to the health therefore these electric units are very favorable in houses with old people and small children.
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?