We have several single zone RTU's that will need direct airflow monitors because the units have DCV.  The contractor says the low OA alarm will be located on the units at the roof.  They do not...

Hello, we have a project that is naturally ventilated, but doesn't have direct exhaust airflow (offices are ventilated through a central atrium, atrium is naturally ventilated with gravity...

Hi,

We completed the VRP calculations and the summary tab under "Outdoor air intake flow provided meets or exceeds Vot?", it says Yes or No for each system.

What is the rule of...

Can anyone provide me with a definition or point me towards how LEED v4 defines a dwelling unit? I have a dormitory project and am trying to interpret the Resi Only requirements for v4. As an...

Has anyone successfully used scheduled intermittent ventilation for a constant-volume exhausted space to avoid overventilation, and to minimize energy usage, in a warehouse or similar space?

Hi

I have some of the amenity spaces in a residential building served by small constant flow DX units. The outside air is routed to the units and balanced to provide the required minimum...

Dear all,

We are working on a project where the ozone levels exceed the most recent three year average, so we must include air-cleaning devices for ozone. Does anybody have any guidance...

Hi!

I have a problem using the calculator for ASHRAE that is supposed to be uploaded on LEED Online, nothing happens when I enter values. I have 100 % outdoor air system, using SI-units. I...

Hello, we have several projects that are using single zone RTU's with CO2 based demand control ventilation.  We have...

I have a new building which is to get attached to my existing non-LEED building.  The new prospect LEED NC building is to have a door to access the existing building, so I need to know if I need...