Business Description	12 Months Ended
Business Description	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Description	Business Description AAON, Inc. is a Nevada corporation which was incorporated on August 18, 1987. Our operating subsidiaries include AAON, Inc., an Oklahoma corporation (“AAON Oklahoma”), AAON Coil Products, Inc., a Texas corporation (“AAON Coil Products”), and BASX, Inc., an Oregon corporation (“BASX”) (collectively, the “Company”). The consolidated financial statements include our accounts and the accounts of our subsidiaries. We are engaged in the engineering, manufacturing, marketing, and sale of premium air conditioning and heating equipment consisting of standard, semi-custom, and custom rooftop units, data centers cooling solutions, cleanroom systems, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, geothermal/water-source heat pumps, coils, and controls. Inflation and Labor Market In 2022, raw material and component prices rose, but by 2023, inflation slowed, leading to some stabilization in these prices. Due to our favorable liquidity position, we continue to make strategic purchases of materials when we see opportunities. We continue to manage the increase in the cost of raw materials through price increases for our products. We have also experienced supply chain challenges related to specific manufacturing parts, which we have managed through our strong vendor relationships as well as expanding our list of vendors. Additionally, we continue to experience challenges in a tight labor market, especially the hiring of both skilled and unskilled production labor. We have implemented the following wage increases to remain competitive and to attract and retain employees: •In March 2022, we awarded annual merit raises for an overall 3.0% increase to wages. •In October 2022, we implemented a cost of living increase of 3.5% in place for all employees below the SLT level. •In March 2023, we awarded annual merit raises for an overall 3.9% increase to wages. •In March 2024, we awarded annual merit raises for an overall 3.3% increase to wages. We continue to implement human resource initiatives to retain and attract labor to further increase production capacity. Beginning in 2023, initiatives included changing our employee paid time off policy, historically awarded in arrears at the beginning of each quarter, to accrue ratably over each pay period. Additionally, we enhanced our benefits for short-term disability, life insurance, paid parental leave, and paid military leave. Despite efforts to mitigate the impact of inflation, supply chain issues and the tight labor market, future disruptions, while temporary, could negatively impact our consolidated financial position, results of operations and cash flows. WH Series and WV Series Water Source Heat Pump Units As part of the normal course of business, management continually monitors the profitability of the Company’s various product series offerings. During the third quarter of 2022, management made the decision to no longer produce our small packaged geothermal/water-source heat pump units consisting of the WH Series horizontal configuration and WV Series vertical configuration, from one-half to 12 1/2 tons (“WH/WV”). These WH/WV units were produced solely out of the AAON Oklahoma facility. Production of the remaining WH/WV backlog was completed during the second quarter of 2023. Change in Estimate During the first quarter of 2022, a review of the Company’s useful lives for certain sheet metal manufacturing equipment at our Longview, Texas facilities resulted in a change in estimate that increased the useful lives from between 10 and 12 years to 15 years. This determination was based on recent and estimated future production levels as well as management's knowledge of the equipment and historical and future use of the equipment. The change in estimate was made prospectively and resulted in a decrease in depreciation expense within cost of sales on our consolidated statements of income of $1.8 million during the year ended December 31, 2022. We do not believe the impact of these events had a material adverse effect on our consolidated financial position, results of operations and cash flows.