two things you must know to get the maximum benefit from your attic fan

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4/12 Roof

Attic Size	Attic Fan Needed
800sf	(1) 20 watt fan	Buy
1,200sf	(1) 20 watt fan	Buy
1,600sf	(1) 25 watt fan	Buy
2,000sf	(1) 30 watt fan	Buy
2,400sf	(1) 30 watt + (1) 20 watt	Buy

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8/12 Roof

Attic Size	Attic Fan Needed
800sf	(1) 20 watt fan	Buy
1,200sf	(1) 20 watt fan	Buy
1,600sf	(1) 25 watt fan	Buy
2,000sf	(1) 30 watt fan	Buy
2,400sf	(1) 30 watt + (1) 20 watt	Buy

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12/12 Roof

Attic Size	Attic Fan Needed
800sf	(1) 20 watt fan	Buy
1,200sf	(1) 20 watt fan	Buy
1,600sf	(1) 25 watt fan	Buy
2,000sf	(1) 30 watt fan	Buy
2,400sf	(1) 30 watt + (1) 25 watt	Buy

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