We have a constant volume air fan feeding many floors. It feeds the mechanical space using it as a plenum. At the floor level there is a Supply fan serving the VAV and Fan boxes.

Hello again, We now have the 62MZ spreadsheet working (thanks again!), but a few more questions have come up as our ME works through it. Can anyone provide some insight on these? 1.

Hi everyone, i'm working in a office building that will be certified.

I am working on a building that has multiple floors that are completely stripped and wide open for new tenants to design the layout to.

Where can I find the Option B Calculator that is used to calculate compliance with 10 CFM per person for AHU's unable to meet ASHRAE 62.1-2007?

The new calculator (v2009v4_Minimum IAQ Performance Calculator_v03) from the Resources tab, does not count the ‘Zone Outdoor Airflow’ (column N) and it shows 0,00 no matter what system and values w

SIngle 100% outdoor air AHU is serving multiple zones (through diffusers) on couple of floors in a highrise office building.

Is it allowed to exclude up to 10% of spaces from this prerequisite? Our project is a 20-story building that complies with the ventilation rates but there is an office in the core that doesn't hav

Our EBOM 2009 project credit data has to be completed by 8-5 and I am getting a message "Would need over 100% OA Intake" at the end of the IEQp1-A1 VAV data input form.

Hallo, In our project there are AHUs providing a mix of outdoor and return air.