section doe go 102001 1165 nrel bk 710 29267 may 2001 70 5 2 6 ground source heat pumps such as small town post offices in residential and skin dominated commercial buildings make the most sense mixed climates with significant heating cooling loads because high cost pump replaces both air conditioning system larger signifi cant internal investment a can be justified further north increase building size packaged terminal used hotels large apartment are similar except that is con tinuously circulating of chilled water individual pro vide fully controllable or for rooms expensive to install com mercial it some times makes better economic invest energy effi ciency measures cantly reduce then less equipment savings able pay envelope improvements
