A system and method for structure heating, ventilation, and air conditioning
(HVAC)
that uses a heat exchanger to transfer heat between the structure and a subsurface
storm water discharge chamber system is disclosed. Coils for heat management exchange
are located in permanently collected runoff within a storm water management system
beneath the frost line; the use of coils located within the retained runoff allows
for improved heat exchange over coils placed within soil. Also described are a
sensing device and feedback loop for HVAC control, to improve efficiency at ambient
temperatures near the subsurface temperature.