This prerequisite establishes a baseline for providing a minimum amount of outdoor air to buildings in order to maintain good indoor air quality and keep occupants comfortable and healthy.
The referenced standard is ASHRAE 62.1-2016, which is a newer version than that referenced in LEED v4. ASHRAE 62.1-2016 is often more stringent than local building codes.
This prerequisite establishes a baseline for providing a minimum amount of outdoor air to buildings in order to maintain good indoor air quality and keep occupants comfortable and healthy.
The referenced standard is ASHRAE 62.1-2010, which is a newer version than that referenced in LEED 2009. ASHRAE 62.1-2010 is often more stringent than local building codes, although it is not likely to entail any added costs.
This prerequisite is a big one, not only because it’s required for all projects, but also because it feeds directly into the corresponding credit, Optimize Energy Performance.
This prerequisite is a big one, not only because it’s required for all projects, but also because it feeds directly into here on LEEDuser.
The baseline ratchets up to ASHRAE 2016. This means that LEED is likely now ahead of most local energy codes.
This credit rewards projects that select mechanical equipment and refrigerants with lower ozone depletion and global warming impacts. The credit calculation takes several other variables into account—including equipment life, refrigerant leakage rate, and the ratio of coolant charge to cooling capacity—in order to determine compliance.
This credit rewards projects that select mechanical equipment and refrigerants with lower ozone depletion and global warming impacts. The credit calculation takes several other variables into account—including equipment life, refrigerant leakage rate, and the ratio of coolant charge to cooling capacity—in order to determine compliance.
This credit is heavily dependent upon decisions made during the design process for your building. This fact can make it difficult for projects to comply, and it will also make it harder for teams to collect the information necessary to even investigate compliance for existing lighting and controls.
Most buildings aren’t able to change the daylight or views available in occupied spaces–you’ve either got it or you don’t. Because there’s little opportunity for teams to impact the credit outcome, most projects tend to pursue this credit late in the performance period and only if additional LEED points are needed.
If you’re pursuing higher levels of certification and have a building automation system (BAS) in place already, consider this credit. To earn it you’ll need to implement two forms of thermal comfort monitoring, including continuous monitoring of air temperature and humidity, and periodic measurements of air speed and radiant temperature.
This credit goes beyond the commissioning scope required for the prerequisite. Any project can pursue this credit; however, it sometimes faces slow uptake due to some misconceptions around its benefits. The fact is, a robust commissioning process will very likely offer worthwhile savings to owners over the life of a building and do with a relatively quick payback period.