The project team and contractor work together to determine the feasibility and rough cost increase of including CO2 sensors or outdoor airflow measurement devices.

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The project team and contractor work together to determine the feasibility and rough cost increase of including CO2 sensors or outdoor airflow measurement devices.

Fees for engineering services may increase due to this credit, because of the need to develop controls sequences. That premium can  be reduced if the engineer has experience with the credit in similar applications.

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Fees for engineering services may increase due to this credit, because of the need to develop controls sequences. That premium can be reduced if the engineer has experience with the credit in similar applications.

CO2 sensors will provide the highest return on investment in areas where the occupancy is intermittent or unpredictable. Examples include conference rooms and auditoriums, where ventilation rates will need to be high only when close to full occupancy and

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CO2 sensors will provide the highest return on investment in areas where the occupancy is intermittent or unpredictable. Examples include conference rooms and auditoriums, where ventilation rates will need to be high only when close to full occupancy and where ventilation rates can be low when the spaces are unoccupied.

Some utilities offer rebates for installing CO2 sensors in conjunction with demand-control ventilation. For example, the New York State Energy Research and Development Authority (NYSERDA) and Florida Power & Light have offered such incentives. Check w

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Some utilities offer rebates for installing CO2 sensors in conjunction with demand-control ventilation. For example, the New York State Energy Research and Development Authority (NYSERDA) and Florida Power & Light have offered such incentives. Check with your local utility or DSIRE to see if rebates are available in your area (see Resources).

CO2 sensors do not provide the same benefit in non-densely occupied spaces as they do in densely occupied spaces. It is important to remember that CO2 sensors measure only CO2 generated by human occupants and they are typically not a good way to indicate

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CO2 sensors do not provide the same benefit in non-densely occupied spaces as they do in densely occupied spaces. It is important to remember that CO2 sensors measure only CO2 generated by human occupants and they are typically not a good way to indicate indoor air quality in non-densely occupied spaces. CO2 monitors cannot replace outdoor air monitors and are often incorrectly preferred because they are less expensive than outdoor air delivery monitoring.

Projects without ducted make-up air must follow Option 2 for natural ventilation, and should weigh the costs and benefits of installing monitoring devices. For example, in multifamily projects and hotels where outside air is only supplied through pressuri

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Projects without ducted make-up air must follow Option 2 for natural ventilation, and should weigh the costs and benefits of installing monitoring devices. For example, in multifamily projects and hotels where outside air is only supplied through pressurized hallways and operable windows. Every apartment or unit will need one CO2 sensor per unit, and many projects find this to be too costly. Mechanically ventilated common areas such as hallways and lobbies will require outdoor airflow monitors instead of CO2 sensors.

Continuous airflow or CO2 monitoring is required. Air balancing measures such as total airflow measurement and static pressurization measurements do not comply with the credit requirements.

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Continuous airflow and CO2 monitoring is required. Air balancing measures such as total airflow measurement and static pressurization measurements do not comply with the credit requirements.

For Commercial Interiors projects, verify that any outdoor air monitoring devices or CO2 sensors are compatible with the existing mechanical equipment and will be able to provide the feedback and corrective action for credit requirements. Providing the ap

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For Commercial Interiors projects, verify that any outdoor air monitoring devices or CO2 sensors are compatible with the existing mechanical equipment and will be able to provide the feedback and corrective action for credit requirements. Providing the appropriate feedback is typically more difficult for CI projects.

For Core and Shell projects, CO2 sensors are not required in tenant spaces that are not included in the scope of work for the LEED project. However, in order to achieve credit compliance, the base building’s mechanical system and BMS must be capable

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CO2 sensors are not required in tenant spaces that are not included in the scope of work for the LEED project. However, in order to achieve credit compliance, the base building’s mechanical system and BMS must be capable of incorporating CO2 sensors into future tenant fit-outs. Including requirements for monitoring systems in tenant lease or sales agreements is recommended to help tenants earn a LEED for Commercial Interiors credit for CO2 monitors.

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