Downloadable computer software for assessing and managing energy usage, improving energy efficiency, providing energy consumption information and predicting and reporting maintenance and service needs for HVAC equipment; Downloadable software for diagnostics and troubleshooting in the field of electric appliances, namely, heating, ventilation or air conditioning appliances; Downloadable software application for recording and displaying data related to HVAC systems; sensors, namely, humidity sensors and temperature sensors; electronic sensor pack modules for collecting temperature, current, voltage, and HVAC performance system data; diagnostic apparatus, namely, programmable logic controllers for collecting and communicating HVAC system performance and health data and electronic control systems for assessing and analyzing HVAC systems; Downloadable software for use in controlling, configuring, monitoring, diagnosing, adjusting, maintaining and repairing equipment, namely, HVAC systems; Downloadable software for use in controlling and communicating diagnostic information for residential and commercial heating, ventilation, and air conditioning applications; Downloadable software for remotely detecting conditions of and malfunctions in HVAC systems; HVAC monitoring systems comprised of computer hardware, wireless hubs, transmitters, embedded software and downloadable software applications for use in tracking, collecting, measuring, analyzing, and reporting on temperature, air pressure, energy consumption, status and performance of HVAC systems and providing alerts of triggering events; Pressure sensors; Temperature sensors; Water sensors; Electrical signal sensors; Downloadable software for collecting and reporting data related to the operation and maintenance of HVAC systems