Uneven cooling in different rooms; some rooms too hot, others too cold

Safety first: Use caution in attics or crawlspaces when inspecting ducts.

• Step 1 – Check registers and dampers: Ensure all supply and return registers are open. Adjust balancing dampers if present.
• Step 2 – Inspect accessible ducts: Look for disconnected or crushed ducts, especially near the air handler.
• Step 3 – Remove grille filters: If individual room filters are installed at grilles, clean or remove them if overly restrictive.
• Step 4 – Professional balancing: For persistent issues, have a contractor perform duct balancing and possibly add returns.