cool  recovery The system takes advantage of the natural temperature difference between day and night. At night the COOL- PHASE system draws in cool outside air and passes it over the thermal batteries to charge them. vent In the winter the system works in reverse removing warm stuffy air from the environment and transferring that warmth to fresh air coming in.  Throughout the year the COOL-PHASE system will monitor indoor air quality and ensure a supply of fresh air to create a healthy and productive space in which to live and work. Filters remove dust, pollutants and allergens from the air.  At the core of the COOL- PHASE system is a Thermal Battery that stores energy when it is freely available and releases it when it is needed. The Thermal Battery uses the latent heat property of materials to store large amounts of energy.  core