http://blog.airscapefans.com All About Whole House Fans + bonus opinions on energy. Fri, 03 Sep 2010 21:55:24 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 http://blog.airscapefans.com/archives/first-pass-on-energy-savings http://blog.airscapefans.com/archives/first-pass-on-energy-savings#comments Fri, 04 Sep 2009 00:12:09 +0000 neil http://blog.airscapefans.com/?p=282 We’re getting ourselves ready to build some software to help predict whole house fan energy savings. In the meantime, I put together this spreadsheet, which I think is a pretty good approximation for the coastal areas of California.

Potential Whole House Fan Energy Savings per Year for California
Input Energy cost		$0.24	Dollars per KWH
Application	High Speed Watts	Low Speed Watts	Energy Savings * (per Year)
2.5WHF	288	250	$777.89
2.5eWHF	200	43	$826.70
Air Conditioning	2808	na	$0
* Assumptions are that the cooling season is 5 months, the WHF is run 10 hours/day, 40% use is at low speed, an average deltaT at night is 10º , and that all WHF cooling offsets AC use.

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