Match an official room-area tier, test floor and wall clearance, and compare a written fan label's airflow and CFM/W before installer review.
What ceiling-fan size fits this room, and does the entered specification clear the room and airflow checks?
Start with the ENERGY STAR room-area tier, then treat blade height, wall clearance, mount type and the exact model's CFM/W label as separate gates. A diameter alone cannot approve a fan or its installation.
Method
Area selects the published blade-span tier. Entered diameter sets wall clearance; ceiling height minus full fan drop sets blade height. Label CFM and watts are compared with ENERGY STAR product criteria.
Important limitation
Planning only. Structure, electrical box, local requirements, slopes, furniture and exact manufacturer instructions need a registered installer and written model documents.
How to use the result safely
Treat the result as a transparent planning ledger. Stop before purchase or installation when an exact specification, rate, structure or measured condition is unknown.
