In 2025, chimneys feature IoT app control for air‑quality alerts and maintenance, smart auto‑clean (heat/water), refined motion‑sensor and touch controls, powerful yet quieter motors, filterless ...

Key Points Rust on a chimney comes from its metal components, not from the bricks.Metal parts like the cap and flashing rust with moisture, staining the brick.To prevent chimney rust, clean the brick, ...