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January 8, 2014

Energy standards require ASHRAE ventilation rates

Letter to the Editor

I've just had a look at, Two paths for energy efficiency in updated B.C. Building Code, in the Dec. 18 issue of the Journal of Commerce.

I thought it might be helpful to provide some additional clarification that may be useful to your readers.

Whichever standard code users select to use, ASHRAE 90.1(2010) or NECB (2011), they will be required to use the ventilation rates in the B.C. Building Code, which are ASHRAE 62.1 (2001) with all amendments except addendum “n” and to use Canadian climate date published by Natural Resources Canada.

These choices are self evident for NECB users, but the ASHRAE standard internally references different ventilation rates and climate data, which could result in significantly different costs and outcomes.

For more information, go here.

John Nicol,

Energy Projects team leader,

Office of Housing and <0x000A>Construction Standards,

B.C. Building & Safety Standards Branch

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