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AAON, INC.

CIK: 8241421 Annual ReportLatest: 2026-03-02

10-K / March 2, 2026

AAON, Inc.

Company identity

  • AAON, Inc. is a Nevada corporation with operating subsidiaries including AAON, Inc. (Oklahoma), AAON Coil Products, Inc. (Texas), and BASX, Inc. (Oregon).
  • The company designs and manufactures configurable heating, ventilation, air conditioning, and liquid cooling solutions for commercial and industrial indoor environments.
  • The business strategy centers on mass semi-customization using flexible, computer-aided manufacturing to deliver configurable equipment with the cost efficiency of scaled production and the precision of customization.

Business segments

  • AAON Oklahoma
    • Engineers, manufactures, and sells configurable HVAC systems, control solutions, and aftermarket parts.
    • Operations in Tulsa (OK), Memphis (TN), Parkville (MO), plus retail centers (NAIC and Gary D. Fields Customer Exploration Center).
  • AAON Coil Products
    • Develops semi-custom and custom HVAC systems and coils.
    • Operations in Longview (TX) with West/East Plant facilities and a Kodak facility used for warehouse space.
  • BASX
    • Provides highly customized, high-performance cooling and air-handling solutions for data centers, cleanrooms, and specialized markets.
    • Main operations in Redmond (OR) with additional leased facilities in nearby towns (Antler, Marshall, East Empire, Sisters).

Markets and applications

  • Serves commercial, industrial, data center, and cleanroom markets.
  • Product range includes rooftop units (RTUs), air handling units, condensing units, makeup air units, energy recovery units, geothermal and water-source heat pumps, coils, and factory controls.
  • BASX focuses on data centers, hyperscale HPC, cleanrooms, healthcare, and other mission-critical environments with products such as Coolant Distribution Units (CDU), liquid-cooled and air-cooled offerings, and water-free free cooling solutions.

Technology and product leadership

  • Flagship RTU lines: RQ, RN, RZ (2–261 ton ranges), with indoor solutions (SA, SB, M2) and a variety of control and energy-efficiency features.
  • AAON Alpha Class™: Advanced platform for heat pumps that operate in low ambient temperatures and support energy efficiency and decarbonization goals.
  • Controls: In-house development of VCCX controllers and integrated controls; certifications include UL 916, UL 60730, BACnet CTL, and California Title 24.
  • BASX innovations: CDU platform for precise hydraulic control; water-free free cooling chillers; modular air-handling configurations; expanded capabilities for large-scale data centers.

Strategy and competitive focus

  • Differentiation through product leadership, engineering excellence, and total value of ownership (quality, performance, efficiency, serviceability, lifecycle cost).
  • Emphasis on customer collaboration via a network of independent sales representatives and a build-to-order model instead of standardized off-the-shelf solutions.
  • Ongoing investment in R&D, testing capabilities (NAIC in Tulsa with AMCA accreditation and large environmental test rooms), and controls development to accelerate time-to-market and improve performance.

Key metrics

  • Customers with 10% or greater concentration of revenue
    • 2025: 3 customers
    • 2024: 2 customers
    • 2023: 3 customers
  • Foreign sales (amounts and as a percentage of net sales)
    • 2025: $38.1 million (2.6% of net sales)
    • 2024: $30.1 million (2.5% of net sales)
    • 2023: $39.9 million (3.4% of net sales)
  • Backlog
    • December 31, 2025: $1,828.5 million
    • December 31, 2024: $867.1 million
    • Backlog reflects orders received but not yet delivered; portions for BASX may have longer lead times and do not turn over within typical AAON backlog lead times.
  • Employees
    • February 24, 2026: approximately 5,897 employees
    • February 24, 2025: approximately 3,856 employees
    • February 20, 2024: approximately 3,666 employees