Both scenarios propose a building HVAC upgrade every five ( 5 ) years starting with the greenhouse in FY2025 ( only 3 years away ), which has the highest GHG emissions . These scenarios also take into account the ages of the HVAC systems . Both scenarios are contingent upon the completion of the Campus-wide Facilities Master Plan for which a Request for Proposals ( RFP ) will be prepared beginning in January 2022 ( FY2022 ) with the support of Mount Auburn ’ s new President .
This first scenario assumes at least a 50 % reduction in GHG emissions for each building HVAC . The City of Boston calls this scenario a deep energy retrofit . It is not easy to achieve . It is more stringent than what is commonly known as the ‘ stretch ’ code that virtually all cities and towns across the state have adopted . The City of Boston says the deep energy retrofit is not good enough to achieve carbon-neutrality without the purchase of offsets . It is a starting place .
In this scenario of 50 % reduction in GHG emissions , Mount Auburn gets to around 200 mtCO2e by 2050 . To become carbon neutral , carbon offsets would need to be purchased . HVAC
Figure 13 - In this scenario of 50 % reduction in GHG emissions , Mount Auburn gets to around 200 mtCO2e by 2050 . HVAC upgrades have not been this efficient in part because there has been an increase in building use .
Mount Auburn Cemetery | Climate Action & Sustainability Plan 20