Costs for testing will depend on how many air handling units and ventilation zones need testing, whether staff are qualified to do testing in-house, and whether the building has a BAS that gathers data.

Test all building exhaust systems to confirm that they are functioning as intended. Be sure to confirm proper function, including fan speed, voltage, control sequences, and set points.

In the ASHRAE 62MZcalc spreadsheet, be sure to override the default occupancy with actual building occupancy.

Perform VRP calculations for all air handling units and applicable floor areas. Make sure that the floor area covered by VRP calculations matches up with the total gross floor area that is reported in your LEED application.

Compare measured flow with required levels of outdoor air for each ventilation zone. Calculate the required outdoor air levels by completing ventilation rate procedure (VRP) calculations using the provided ASHRAE 62MZCalcs spreadsheet for each air handling unit.

If your building automation system does not continuously measure outdoor airflow, you should still be able to measure airflow accurately by performing a duct traverse with a pitot tube. If the system’s configuration does not allow for a duct traverse (such as with curved ductwork or limited access), anemometer measures can be taken at each air handling unit.

Conduct airflow monitoring using manual instrumentation or a building automation system to document outdoor airflow rates. Gather data or take measurements for each air handling unit or ventilation zone; sampling is not permitted. For all VAV boxes, you’ll need to set up the ventilation system to simulate the worst-case system conditions expected during normal operations, such as minimum outside air flow due to damper position.

Conduct a visual inspection of outside air vents, dampers, and louvers and remove any obstructions that restrict outdoor air flow.

For All Options

Develop a ventilation maintenance program including periodic checks and system repairs.