When we think of crackling fires in Regency households, it may be easy to think of wood burning rather than coal. But with developments in coal extraction, the coal mining industry boomed in 1800, making it a popular heating source for many homes (https://www.planete-energies.com/en/medias/saga-energies/history-energy-united-kingdom)
A New System of Practical Domestic Economy (1827) has some helpful information about coal for use in the home:
