A fireplace can share a chimney flue with:

A fireplace sharing a chimney flue with nothing else is based on safety and building code standards designed to minimize fire hazards and ensure efficient venting of combustion gases. Each fireplace or heating appliance generally requires its own flue to properly vent smoke and gases.

When multiple appliances share a single flue, they can cause dangerous situations like smoke backing up into living spaces, improper draft, and the potential for flue gas spillage. In addition, appliances that operate at different temperatures and combustion rates can create issues with efficiency and safety.

Building codes typically mandate that fireplaces must have dedicated flues to prevent these risks. This adherence to safety standards is vital to ensure that every heating appliance operates within safe and efficient parameters. Therefore, the statement that a fireplace can share a chimney flue with nothing else aligns with best practices in home safety and building regulations.