Ventilation rate
user-6652724
| Posted in Building Code Questions on
buiding code required ventilation rate for residential 1-2 family
is 15 cfm/person or 0.35 ach living space whichever is greater
what is considered living space
is cellar assessory storage / other included
it ends up being a big number .
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Replies
Is your cellar connected to the conditioned space? FWIW. Allison Bailes has this article on ventilation rates: https://www.energyvanguard.com/blog/we-need-higher-ventilation-rates-but-how-high/
We probably need more ventilation than current guidelines call for.
Hi Steve,
thanks for article . i like to read his stuff
Yes the house is (3) story Cellar is open area and conditioned . the house is about 10,000 sf ceiling vary ( 8-11'-6)
only 8 people. using .35 ach its a lot of O.A
i was wondering what other people consider living space
the first floor is the main floor , then bedroom on second floor
using 15 cfm/person 120 cfm using 0.35 ach about 375 cfm . big difference