HVAC is a major contributor to the maintenance and energy-related operating expenses of a factory. Without HAVC monitoring system users will never know how much energy have been consumed and which HVAC unit have good or poor performance (the poor performance of machine leads to higher energy consumption and cost). Another of function is HAVC monitoring system can also trigger an alert to notify the building operator what something likely to go wrong with HVAC units. HAVC monitoring system cover monitoring and collecting machine behaviour from covers the entire HVAC system, including chillers, exhaust fans, motors, etc. To avoid getting data improperly, TTC as HVAC specialist company can give suggestion and concept design to the building operator to use HAVC monitoring system in the most effective way.