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NC-v4 EQp1:Minimum indoor air quality performance

CO concentration (ppm) thresholds for alarms in dwelling units

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Junaid Mujahid
Junior HVAC Design Engineer - Sustainability
PNC Architects
LEEDuser Basic Member
2 thumbs up

Hi Everyone,

There is no explicit guidance in the reference guide as to the concentration of Carbon Monoxide at which the CO Sensors must activate an alarm in apartments. The only concentration I could find is the 9 ppm (or 2 ppm above outdoor levels) which is in the IAQ Assessment requirements.

I believe LEED references other indoor air quality standards for this, does anyone have any knowledge on this?

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