AAON INC

Our manufacturing areas are heavy industrial-type buildings, with some coverage by overhead cranes, containing manufacturing equipment designed for sheet metal fabrication, metal stamping and tube forming. The manufacturing equipment contained in the facilities consists primarily of automated sheet metal fabrication equipment, supplemented by presses and tube bending equipment. Assembly lines consist of cart-type and roller-type conveyor lines with variable line speed adjustment. Subassembly areas and production line manning are based upon line rates set by production management.

We own and lease our properties and facilities, as further described below. We believe that all of our facilities are well maintained and are in good condition and suitable for the conduct of our business.

AAON Oklahoma

The following table summarizes our plant and office facilities that support our AAON Oklahoma segment:

Our West Plant and Office facilities, NAIC, Exploration Center, and Buckaloo Warehouse sit on an approximate 87.3-acre tract of land and are located at 2440 South Yukon Ave., Tulsa, OK 74107. Our East Plant and Office facilities sit on an approximate 32.7-acre tract of land and are located at 2425 South Yukon Ave., Tulsa, OK 74107.

Our Tulsa location is also home to our engineering research and development laboratory, the NAIC. The three-story, stand-alone facility is both an acoustical and a performance measuring laboratory. This facility currently consists of twelve test chambers, allowing AAON to meet and maintain industry certifications. This facility is located west of our West Plant and Office Facilities.

The Exploration Center is located adjacent to the NAIC. The three-story Exploration Center provides an immersive and educational experience of our products, solutions, and our people and also serves as an event hub for our stakeholders, including our customers, employees, representatives, and investors. The Exploration Center adds a dimension of customer engagement that showcases our products and our competitors’ products and allows our customers to interact with our products and employees.

We also own two additional warehouses. Our Buckaloo Warehouse is west of our West Plant and Offices. Our Flint Warehouse is located approximately 3/4 of a mile east of our West and East Plant locations at 2020 South Union Ave., Tulsa, OK 74107 and sits on approximately 5.5 acres.

Our Administration Facilities are located approximately 3/4 of a mile east of our West and East Plant locations at 1624 - 1625 West 21st St., Tulsa, OK 74107. These facilities sit on approximately 3.6 acres. The facilities include additional office and meeting space utilized for company-wide administrative, human resource, and training functions. Our new Human Resources building, which opened in January 2025, enhances our engagement with current and future employees.

In addition to a retail parts store location at our West Plant & Offices, we also own a stand-alone building at 9528 East 51st St., Tulsa, OK 74145 which is utilized as an additional retail parts store to provide our customers more accessibility to our products.

In December 2024, we purchased a facility in Memphis, Tennessee located at 5106 Tradeport Drive, Memphis, TN 38141. This facility, which sits on 35.7 acres, will primarily facilitate the growing demand for BASX products in the data center market as well as AAON products and will also add geographic diversification to AAON's current manufacturing footprint, mitigating certain operational risks and better serving our data center customers.

Our operations in Parkville, Missouri, are conducted in a leased plant/office at 8500 NW River Park Drive, Parkville, MO 64152. This location is home to our Controls design and manufacturing facilities.

We also lease a facility primarily used for parts distribution and additional warehouse space. This facility is located at 13445 E. 59th St., Tulsa, OK 74134.

AAON Coil Products

The following table summarizes our plant and office facilities that support our AAON Coil Products segment:

Both our East and West Plant and Office facilities are located at 203 Gum Springs Road, Longview, TX 75602. Our East Plant and Offices sit on approximately 12.9 acres and our West Plant and Offices sit on approximately 22.6 acres. In January 2025, we completed our new expansion of the West Plant which added 225,500 square feet of manufacturing/warehouse space and 12,000 of office space. The new expansion is included in the table amounts above.

Our retail parts store, which is leased to a Representative of the Company, is located north of our West Plant and Offices at 203 Ford Lane, Longview, TX 75602. Our Kodak Facility is primarily used for additional warehouse space and is located at 115 Kodak Blvd, Longview, TX 75603.

BASX

The following table summarizes our plant and office facilities that support our BASX segment:

Our main operations in Redmond, Oregon, are conducted in a plant and office facility at 3500 SW 21st Pl, Redmond, OR 97756. This facility sits on an approximately 13.8-acre tract of land and is the location of our new 36,000 square foot weld-shop that opened in September 2024.

In addition, we lease facilities for additional warehouse storage located at 601 NE Antler Ave., Redmond, OR 97756 (“Antler”) and 2895 S.W. 13th Street, Redmond, OR 97756 (“Marshall”). Our leased facility at 690 W Three Peaks Drive, Sisters, OR, 97759 (“Sisters”) is used for additional clean room assembly.

We lease several other properties near our main Redmond, Oregon location. In the aggregate, these properties contain approximately 16,000 square feet of warehouse space, 4,000 square feet of office space, and approximately 8.0 arces of land for outdoor storage.