The Fan Country Test

Find out whether your house can fire its air conditioner — or whether the fight for your electric bill lives above your ceiling instead. No purchase, no installer, no guesswork.

• The Do This Tomorrow Morning ritual — a zero-dollar move that works in every climate
• The $10 two-thermometer instrument, the seven-evening log, and a worked example
• The one-minute decision tree — whole-house fan, attic fan, or honestly neither
• The $30 one-evening proof, and the safety rules the fan aisle skips