NAH is equipped with a geothermal system that allows it to balance out the heating and cooling of the building through a series of ground loops and heat pumps.

A ground loop is a series of pipes buried underground at a depth where temperatures stay consistent year round. It serves as the critical link allowing geothermal heat pumps to use the Earth as a heat source or heat sink, depending on if heating or cooling is required. Heat pumps placed throughout the building are constantly balancing the temperature of the building by drawing from the ground loop.

This graph shows how much the heat pumps were activated over the last 24 hours to provide heating (red) or cooling (blue) to the system, as well as when the heat pumps were inactive (green). When the heat pumps are inactive, this means the system is balanced and does not require any input from the ground loop or other heating or cooling systems.

Note: The most recent data is to the left.

Data Retrieval Time
Every hour, data is retrieved from various points across the building. New hourly data may take up to 30 minutes to reflect in this report.

System Outages
Unfortunately, sometimes the system goes down and data points are not reported Although a system outage will usually resolve itself over 24 hours, it may temporarily result in missing data on this chart.

What is a heat pump?

A heat pump is a device that transfers heat energy from a source of heat to a thermal reservoir. Heat pumps help to balance the building’s temperature by moving thermal energy in the opposite direction of "normal." Pumps transfer heat by absorbing it from a warmer object and releasing it to a cooler one. A heat pump uses external power to accomplish this "backwards" heat transfer. The most common design of a heat pump involves four main components: a condenser, an expansion valve, an evaporator, and a compressor. The heat transfer medium circulated through these components is called refrigerant.