Homeowner checklist

Whole-house fans: when night air can help

Use these steps to plan, check and keep a record of your next actions.

• Check whether local nights are cool and dry enough for the intended use.
• Ask how the fan’s intake and attic discharge paths are sized.
• Have pressure and combustion-safety effects assessed.
• Plan an operating routine everyone can follow, including secure openings.
• Confirm the closed-season seal, insulation and maintenance requirements.

Notes & questions to follow up