You’ll lay the groundwork for this credit by developing a green cleaning policy under the prerequisite IEQp3. This credit simply involves expanding the policy that you’re already required to develop. 

Meeting this credit in naturally ventilated spaces is tricky, because it’s hard to ensure that thermal conditions remain within the requisite range. It’s really only possible in a few specific climatic regions with especially temperate conditions.

Meeting this credit in naturally conditioned spaces is tricky, because it’s hard to ensure that thermal conditions remain within the requisite range. It’s really only possible in a few specific climatic regions with especially temperate conditions.

Mixed-mode spaces have a better chance. That is, naturally ventilated buildings can still meet the requirements of ASHRAE-55 if heating and cooling systems can keep indoor conditions comfortable year-round. 

This credit requires that HVAC designs meet the requirements of ASHRAE Standard 55-2004, which deals with thermal comfort of building occupants. Specifically, ASHRAE 55 requires project teams to address air temperature, radiant temperature, humidity, and air speed.

In most cases, designing a system that complies with ASHRAE-55 is standard practice and documentation is the only LEED-specific requirement for achieving the credit, so it should cost very little to earn. 

IEQc7.1 requires that HVAC designs meet the requirements of ASHRAE Standard 55-2004, which deals with thermal comfort of building occupants. Specifically, ASHRAE 55 requires project teams to evaluate the ability of building systems to stay within a comfortable range of air temperatures, radiant temperatures, humidity, and air speeds during design weather conditions.