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AAON, Inc. is a prominent manufacturer and designer of heating, ventilation, and air conditioning (HVAC) equipment, established in 1988 in Tulsa, Oklahoma. The company has expanded its capabilities through strategic acquisitions and growth initiatives, enhancing its product range and manufacturing processes. AAON offers a diverse selection of engineered HVAC solutions tailored for various industries. Their product lineup includes semi-custom and custom rooftop units, data center cooling solutions, cleanroom systems, air handling units, and geothermal heat pumps, among others. These products are designed to meet the specific needs of commercial and industrial buildings across sectors such as healthcare, education, hospitality, and manufacturing. Over the years, AAON has achieved significant milestones, including its initial public offering in 1991 and various acquisitions to bolster its technology and product offerings. The company continues to expand its facilities to accommodate growing demand, solidifying its position as a key player in the HVAC market.
Grassi was founded in 1980 by Louis C. Grassi, with only an empty filing cabinet and a desk. Since then, Grassi has grown to become one of the nations largest accounting firms with more than 360 employees and nine office locations in the U.S. and Italy. Our team of experienced CPAs, CFOs, business consultants, forensic accountants, valuation experts, trust and estate specialists and tax advisors offer strategic advice and customized solutions to overcome all obstacles standing in the way of your greatest success. We do this through our commitment to add Strength in Certainty to every business decision and financial move you make.