Aaon — Business Overview

What does AAON do?

AAON designs and manufactures highly configurable heating, ventilation, and air conditioning (HVAC) equipment for commercial, industrial, and data center customers. Unlike manufacturers of standardized, off-the-shelf units, AAON builds to order — every system is pre-specified by the customer before production begins. The company employed approximately 5,897 people as of February 2026, up sharply from 3,856 a year earlier, reflecting rapid growth particularly in the data center segment.

The company operates through three segments:

How does AAON make money?

AAON's primary revenue stream is equipment sales — it manufactures and sells physical HVAC systems and components directly to customers through a network of independent sales representatives. The company does not sell through big-box retail; instead, it partners with specialized regional reps who handle specification, installation coordination, and service. Lead times for standard AAON-branded products run 18–26 weeks, while BASX data center projects are typically ordered months further in advance.

A secondary and growing revenue stream comes from aftermarket parts and extended warranties. Parts are sold through representative offices and two Tulsa-area retail stores. Extended warranties ranging from six months to ten years are sold separately, with revenue recognized (spread out) over the warranty period rather than all at once. The company also offers factory service organizations at each manufacturing facility to support ongoing maintenance.

Customer concentration is meaningful. In fiscal year 2025, three customers each represented 10% or more of total revenue. The filing identifies key data center customers as including Microsoft, Amazon Web Services, Google Cloud, QTS, and Applied Digital — a sign of how significant the data center build-out has become to AAON's growth story. Foreign sales were modest, at approximately $38.1 million in 2025, or about 2.6% of net sales.

What market does AAON operate in?

AAON's traditional core market is commercial and industrial HVAC — the equipment that heats and cools offices, hospitals, schools, warehouses, and manufacturing facilities. This market is driven by two forces: new construction activity and replacement demand as aging equipment needs upgrading. New construction tends to lag macroeconomic conditions (interest rates, employment), while replacement demand provides a steadier baseline. The commercial HVAC market is mature but benefits from regulatory tailwinds around energy efficiency standards (ASHRAE 90.1) and building decarbonization, which favor higher-efficiency, electrified equipment like the heat pump products AAON is developing under its AAON Alpha Class platform.

The faster-growing opportunity is data center thermal management, where AAON competes through its BASX segment. The rapid expansion of hyperscale data centers — driven by cloud computing and AI workloads — is creating surging demand for precision cooling solutions. AI servers generate significantly more heat per rack than traditional servers, pushing demand toward dense liquid-cooling and high-performance air management systems. BASX introduced a proprietary Coolant Distribution Unit (CDU) in 2025, capable of supporting rack densities exceeding 100 kilowatts, targeting this exact need.

Who are AAON's main competitors?

In commercial HVAC, AAON competes against significantly larger, better-resourced manufacturers. Its main rivals include Trane (Trane Technologies), Carrier (Carrier Global), York Light Commercial (now under Bosch), Johnson Controls, Lennox International, and Daikin Industries. These companies offer broader product lines including lower-featured, lower-cost standardized equipment aimed at price-sensitive buyers. AAON's stated competitive strategy is to avoid competing on upfront price, instead emphasizing total cost of ownership — arguing that its premium efficiency, durability, and serviceability deliver better economics over the equipment's lifespan.

In data center thermal management, BASX faces a different competitive set, including Vertiv, STULZ, Munters, Silent Aire (part of Johnson Controls), Nortek Air Solutions, and Modine Manufacturing. This is a more specialized and fragmented market where deep customization capability and engineering collaboration matter more than scale.

AAON's claimed advantages center on its semi-custom manufacturing model and R&D depth. Its Norman Asbjornson Innovation Center (NAIC) in Tulsa is a proprietary testing laboratory that the company describes as having no equivalent in the world — capable of testing units up to 300 tons under full environmental load, including temperatures from -20°F to 130°F, wind, rain, and snow. This gives AAON the ability to verify performance for customers before installation, which is particularly valuable in critical facilities like data centers and hospitals. The company spent $58.2 million on R&D in 2025, up from $47.3 million in 2024.

Where does AAON operate?

AAON is overwhelmingly a domestic U.S. business. Foreign sales totaled $38.1 million in 2025 — just 2.6% of net revenue — leaving approximately 97% of the business tied to the North American market. The company has no significant international manufacturing footprint.

Manufacturing is spread across five U.S. locations, with the bulk of operations concentrated in Oklahoma and Texas:

Sales reach customers nationally through a network of independent representative firms. The company's limited international exposure means it has minimal direct geopolitical risk from foreign operations, though it does source materials (steel, copper, aluminum) and components globally, which exposes it to commodity price volatility and potential supply chain disruptions.