Historical clue formulations

• Put in front of a fan — 2025-01-12
• Sit on a windowsill, say — 2021-10-16
• Do without a radiator — 2015-02-22
• Use a fan on — 2012-01-24
• Keep from overheating, in a way — 2006-10-29
• Send a jet over? — 2004-07-31
• Reduce engine heat, in a way — 1998-08-30