Air Handling Unit Project


AirHandling Unit Project

AirHandling Unit Project

Thereis increasing need to examine the most effective Roof Top Unit forthe application within an organization. The essence of installing thenew system ranges from the need to conserve the environment, based onUnited States statistics the primary energy is mainly consumed on ayearly basis for cooling, ventilating, and heating commercial space(Criscione, 2011). Going by the 2003 Energy Consumption Survey onCommercial Buildings, the study of 2003 estimated that rooftop unitshandle 2.7 billion square feet of mercantile floor space or packagedair conditioning. Installing a new effective 4 Ton Roof Top Unit in asmall office, provides an average of HVAC Energy Saving of 35percent. It also reflects an average annual dollar savings of $1,500, as well (Criscione 2011). In order for the projects to run asplanned, some aspects must be determined in prior before the projectkicks off.

1to 8 Ton Roof Top Unit

PackagedAir Conditioner (PAC) Roof Top Unit system

Itis one of the major approved systems that align with the stipulatedbenefits applicable to a small office offering an average of HVACenergy saving of 35 percent and also annual dollar savings of $ 1,500(Chisholm, 2010). It is a device, which has undergone various testsby different independently third-party organizations indicating theeffectiveness and efficiency of the system. This positions thesystems as one of the most effective systems that can be installedinto an organization to meet the set standards and offer efficientservices.

Operationof the Unit and Installation set up

Throughintegrating other significant devices attached to rooftop systemdevices, the system operates efficiently highly reducing energy basedon the retrofit measure conducted in relation to the system. Thesystem enables a high percentage on whole building energy saving,normalized annual electricity saving, average electricity savings,based on rate cases, and also average electricity savings undervariable speed cases (Criscione, 2011). The system can regulateheating energy that increases in all climate created due to the lessfan energy imparted to the supply airstream during the hearing season(Duke, 2011). It can save the average energy hence saving onretailer’s electricity while increasing natural gas. The Unitcomponent can be used aligns with the required cooling capacitywithin the small office.


Toensure the effectiveness of the Rooftop Unit, it is essential toidentify and address some of the efficiency issues attached. Some ofthe issues frequently attached to such units ranges from inherentequipment configuration, maintenance issues, and design (Chisholm,2010). Addressing these issues in relation the equipment sizing,prevalence of constant speed fans plus the lack of regularmaintenance can affect the system. Some of the issues to identify andregulate especially under equipment sizing is based on not regulatinghumidity control, fluctuating the room temperature, compressor shortcycling, noisy interior conditions for the office occupants and highenergy demanded and consumption. This stipulates the essence ofensuring continuous support where the respective attached issues areregulated (Criscione, 2011). This can be achieved through part loadoperation and excessive short cycling hence reducing the equipmentefficiency.

TheUnit is also likely to develop different complications emerging fromprevalence of constant speed fans. This may make it difficult toreduce the ventilation rate during hours. This can also lower energyconsumption. Embracing HVAC systems based specifications can mainlyaid to reduce the cost. The HVAC systems provide organizations withthe essence of regular maintenance. To improve the effectiveness ofthe Unit while also ensuring that the desired functionality areachieved on services, the recommended rooftop unit can be alignedwith the preceding incentives to increase performance and reducecost. Some of these incentives include installing VFDs, Technicalassistance for HVAC retro commissioning, purchasing new energyefficient rooftop units, and embracing custom HVAC measures(Chisholm, 2010). Such HVAC measures that can be applied to thesystem include control upgrades, water side and air sideeconomizers, constant volume to variable water or air distribution,exhaust heat recovery equipment, and ventilation controls based onthe demand based approaches (Duke, 2011). The system aims at ensuringthat quality is maintained at the air systems, the Roof Top Unit isused to maintain the quality of air that is run in the aircirculation systems

Auxiliaryequipment required

Theselected unit offers diverse benefits to an organization ifadequately maintained. To enhance effectiveness and efficiency of theunit installing VFDs, and smart saver can aid to facilitate the newsystem introduced into the small organization adequately embraceenergy management system specification among other significantentities (Criscione, 2011). Combining VFDs and some of the energysaving control strategies into the newly installed system can alsoenable the organization reduces the inefficiencies in the rooftopoperation. It will be accessed through a ladder to minimize wastageof space in the area. The ladder will be movable to make work easierfor anyone to access the storage room. The Roof Top Unit system isnot left unattended to, and it is because the management is used inensuring that quality is controlled, and systems run with no problems(Chisholm, 2010).


Installingthe recommended type of 4 Ton RTU (Roof Top Unit) system and theattached devices offers marginal benefits to the organization on thesmall office. Some of the control strategies connected to therecommended system not only increases energy conservation but alsolower cost on the implementation and servicing the new system (Duke,2011). Aligning the system with the proffered devices while alsoincensing maintenance allows the organization to minimize on thecost. Similarly, it will also be benefiting from different strategiessuch as demand control ventilation (in case the group expands theoffice). In the same manner, it would ensure advanced economizercontrol (systems with sensors comparing outside and return airtemperatures hence offering an optimum environment). The webinterface (where outline platform to access and modulate the rooftopcontrol system is offered), and fault detection and diagnosis(Chisholm, 2010). It allows the new system to monitor the essentialrooftop unit function such as the airflow, discharge air temperatureand compressor operation among others. There are various complicatedtasks that are expected to occur in the process of pursuing theinstallation of the air handling unit project. These challenges willinclude finances, time, physical and emotional challenges amongothers. However, these challenges will act as an eye open to prepareme for greater things in the office that can help ensure that thearea becomes a better place to work from in the future. Theimplementation of the recommended system provides a unique entitywhere the organization can align the set standards on energymanagement. It is also essential towards offering a favorable workingenvironment within the organization.


Chisholm,H., (2010). Ensuring Safety at the Workplace. (4thEd.).New York, Cambridge University Press

Criscione,P. (2011). A Dramatic Boost for Existing RTUs. Boulder: Consortiumfor Energy Efficiency.

Duke,E. (2011). Smart $aver® Incentive Program.Retrieved December 9,2012, from Duke Energy: