Case Study
The following case studies show just a few of the potential applications of AAON equipment. With numerous types of
equipment available from residential heat pumps to packaged rooftop units to packaged outdoor mechanical rooms, AAON
can provide an HVAC solution which can meet the requirements of nearly any job.
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VAV Systems - Harrisburg High School (664 KB)
Harrisburg High School was constructed in 1903. The original construction included
masonry exterior walls and framed plaster interior walls. The original heating system was a
steam boiler with wall radiators. The building had not been retrofitted for air conditioning. A few
window AC units had been installed in some office and classroom areas. After several years of
conceptual planning and budgeting, it was decided to undertake a full renovation of the
building. The exterior walls were tuck-pointed and the interior walls were stripped and refinished.
The original 12-foot ceiling height throughout the building allowed the installation of new
ductwork and piping. New drop ceilings were installed at a 10-foot elevation after the mechanical systems were installed. The mechanical system renovation included a complete packaged AAON VAV System.
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Cirtronics Corporation - Milford, NH (318 KB)
The Cirtronics Corporation in Milford, New Hampshire decided it was time to replace the
three decade old water-source heat pumps that serviced their more than 175,000 square foot
building with the AAON WH Series water-source heat pump units. Overall the installation of the
AAON WH Series units at the Cirtronics manufacturing facility went smoothly and the units have
been running without issue since March 2017. In August 2017, Cirtronics placed a second order
for 11 more water-source heat pump replacement units from AAON.
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Geo Outlook Article - Colvin Center - Stillwater, OK (356 KB)
The article discusses the recent renovation of recreational buildings
at Oklahoma State University. The new renovation includes a Ground Source
Heat Pump System. Oklahoma State University is considered by many people in
the industry, to be the origin of the modern Ground Source Heat Pump technology.
It is no surprise that the university turned to GSHP when renovating its Colvin
Center Annex sports and recreation building.
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Dillard’s – Naples, FL (428 KB)
The Dillard’s 180,000 square foot department store in Naples, FL
needed a replacement rooftop HVAC solution that could accomplish significant
energy savings while performing for years to come in the harsh coastal
environment. The RN Series rooftop units, with modulating fans and
compressors and corrosion resistant paint and condenser coil coating, were
able to exceed each and every goal set by Dillard’s.
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BOK Center - Tulsa, OK (428 KB)
The BOK Center, or Bank of Oklahoma Center, is a 19,199 seat sports
and entertainment arena in Tulsa, Oklahoma. The range of events and the
scale of the building required an HVAC unit that was both large enough to
heat, cool, and ventilate the large arena and quiet enough to not
interfere with the acoustics during concerts and events while also being
energy efficient. AAON supplied the BOK center with custom modular rooftop
air handling units containing chilled and hot water coils.
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SOU/RCC Higher Education Center - Medford, OR (428 KB)
The Higher Education Center’s HVAC system provides energy savings,
improved indoor air quality, and the use of an environmentally friendly
refrigerant to contribute to the building’s LEED Platinum certification.
An RL Series packaged rooftop unit with total energy recovery wheels
provides cooling for the building’s VAV system and an RN Series make up
air unit provides ventilation air to the building’s science labs.
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Patricia's Food - Odessa, MO (488 KB)
Patricia’s Foods replaced its 10 year old constant volume packaged
rooftop units with limited features and no humidity control with AAON RM/RN
Series constant volume packaged rooftop units with variable capacity
compressors and modulating humidity control. This resulted in elimination
of moisture build up on the refrigeration cases and utility bill savings.
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Stew Leonard - Newington, CT (364 KB)
Stew Leonard’s newest expansion’s heating and cooling system includes
rooftop water-source heat pump units with a variable flow condenser water
loop which is connected to the grocery store’s water-cooled condenser
refrigeration systems. The energy efficient system reduced the store’s utility
costs and allowed the store to receive energy efficiency rebates from the
power company and the state of Connecticut.
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Allegra Print and Imaging - Tulsa, OK (344 KB)
Allegra Print and Imaging - Tulsa replaced its multizone system with two
AAON packaged rooftop units with modulating humidity control. The units are
able to control the temperature and humidity of the production space, both
critical in a printing facility, in addition to saving money on utility bills.
Energy efficient natural gas heating and enthalpy controlled economizers are
also featured on the units.
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Citrus College - Glendora, CA (400 KB)
The Citrus College Infant Care Center's packaged DX rooftop units were
replaced with HB Series custom quality air handlers, in a packaged unit size.
The high efficiency air handlers featured double wall foam insulated
construction, chilled water and hot water coils, two speed supply blowers,
and economizers.
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