Furnace is running but some rooms are too cold while others are too hot

Safety: Turn off power before removing access panels.

• Check registers: Make sure all supply and return registers are open. Adjust dampers in branch ducts (if present) to direct more air to colder rooms.
• Replace filter: Install a clean filter to ensure proper airflow through the Beretta furnace.
• Inspect visible ducts: Look for crushed, disconnected, or leaking duct sections and seal minor leaks with approved foil tape.

Persistent imbalance may require a professional airflow and duct design assessment.