![]() We categorize the maintenance practices into three levels depending on the maintenance effort and coverage: 1) proactive, performance-monitored maintenance 2) preventive, scheduled maintenance and 3) reactive, unplanned or no maintenance. In the paper, maintenance practices for HVAC systems are presented based on literature reviews and discussions with HVAC engineers, building operators, facility managers, and commissioning agents. Properly maintained HVAC systems can operate efficiently, improve occupant comfort, and prolong equipment service life. If sensors more » used for control purpose are not calibrated, not only building energy usage could be dramatically increased, but also mechanical systems may not be able to satisfy indoor thermal comfort. If a piece of HVAC equipment is not well maintained, its performance will degrade. Different practices of HVAC system maintenance can result in substantial differences in building energy use. Many researches have been done to look at design efficiencies and operational controls for improving energy performance of buildings, but very few study the impacts of HVAC systems maintenance. Among various driving factors to energy performance of building, operations and maintenance play a significant role. buildings is consumed by heating, ventilation and air conditionings (HVAC) according to EIA statistics. « lessĪlmost half of the total energy used in the U.S. This report contains discussions on and procedures for variable air volume systems, package boilers, chillers, exhaust systems, and hydronic systems. ![]() ![]() The objective of this work was to develop simple, accurate procedures for USACE District, Area, and Resident Office construction and engineering personnel, and DPW engineering and operations and maintenance personnel more » to ensure that a new facility`s HVAC system is operating properly and to correct faulty existing HVAC systems. Acceptance testing ensures that US Army Corps of Engineers (USACE) field offices and installation Directorates of Public Works (DPWs) are receiving properly operating HVAC systems. Current design and construction practices should be capable of producing functional HVAC systems, but there are no assurances of this. Operating efficiently, they conserve energy and provide a comfortable, healthy work environment. Properly operating heating, ventilating, and air-conditioning (HVAC) systems are essential for Army facilities. ![]()
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