Not that I would be an expert on the Washington State energy code, but I just happened to be looking at it on the web yesterday, and found it has only two climate zones, as follows:
ZONE 1: Climate Zone 1 shall include all counties not included in Climate Zone 2.
ZONE 2: Climate Zone 2 shall include: Adams, Chelan, Douglas, Ferry, Grant, Kittitas, Lincoln, Okanogan, Pend Oreille, Spokane, Stevens, and Whitman counties.
Otto,
Not that I would be an expert on the Washington State energy code, but I just happened to be looking at it on the web yesterday, and found it has only two climate zones, as follows:
ZONE 1: Climate Zone 1 shall include all counties not included in Climate Zone 2.
ZONE 2: Climate Zone 2 shall include: Adams, Chelan, Douglas, Ferry, Grant, Kittitas, Lincoln, Okanogan, Pend Oreille, Spokane, Stevens, and Whitman counties.
http://apps.leg.wa.gov/wac/default.aspx?cite=51-11-1303
Regards,
Larry O. Degelman, P.E.