The Building Portfolio energy-management system is a full-feature wireless system that offers energy-saving features for building owners and managers. Features include cumulative HVAC reporting, a wireless thermistor, thermistor monitoring, thermistor alarms, humidity monitoring, humidity alarms, lost communications alarms, and enhanced preemptive fault detection. The cumulative HVAC reporting feature allows users to view HVAC run-time per thermostat over a specified date range, correlate heating and cooling directly to energy usage, easily compare thermostats to find units that are wasting energy because they are in need of maintenance or replacement, download specific data to comma-separated-values files for detailed analysis, and enable third parties to manage and control buildings remotely and wirelessly. —Incenergy