No, burning charcoal chunks in a normal house fireplace is not recommended and can be extremely dangerous. Charcoal is not designed for use in indoor fireplaces, and doing so can lead to serious health hazards and safety risks.
Here's why you should not burn charcoal in an indoor fireplace:
Carbon Monoxide Poisoning: Burning charcoal indoors produces carbon monoxide (CO) gas, which is colorless, odorless, and highly toxic. Breathing in carbon monoxide can lead to poisoning and even death. Indoor fireplaces are not equipped to handle the ventilation needed to safely burn charcoal.
Excessive Heat: Charcoal burns at much higher temperatures than wood. Indoor fireplaces are designed to handle the controlled heat output of wood fires. Burning charcoal can cause the fireplace and surrounding materials to overheat, potentially leading to fires and damage.
Creosote Buildup: Burning charcoal can produce a sticky residue called creosote, which can accumulate in the chimney. Creosote buildup increases the risk of chimney fires, which can be extremely dangerous and difficult to control.
Release of Harmful Chemicals: Charcoal contains additives and binders that are not meant to be burned indoors. When burned, these chemicals can release harmful fumes and particulates into your home's air.
Property Damage: The high heat generated by burning charcoal can damage your fireplace, chimney, and surrounding structures.
If you need supplemental heating for your home, it's best to explore safe and appropriate methods, such as using a space heater approved for indoor use, ensuring your home is properly insulated, or considering more efficient heating solutions like a ductless mini-split system or a safe wood-burning stove designed for indoor use.
Always prioritize safety when it comes to heating your home. If you have specific heating needs or concerns, consult with a licensed HVAC professional or a qualified expert to find the best and safest solution for your home.