Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 327,252	$ 311,970	$ 902,917	$ 861,880
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	228,887	246,454	664,754	666,670
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	35,232	25,769	90,852	89,262
BasX
Disaggregation of Revenue [Line Items]
Net sales	63,133	39,747	147,311	105,948
Rooftop units
Disaggregation of Revenue [Line Items]
Net sales	203,172	221,417	598,079	597,508
Rooftop units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	203,172	221,417	598,079	597,508
Rooftop units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Rooftop units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Condensing units
Disaggregation of Revenue [Line Items]
Net sales	16,548	7,636	43,814	34,304
Condensing units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	61
Condensing units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	16,548	7,636	43,814	34,243
Condensing units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air handlers
Disaggregation of Revenue [Line Items]
Net sales	16,243	17,420	43,275	47,889
Air handlers | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air handlers | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	15,829	9,862	38,303	34,693
Air handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	414	7,558	4,972	13,196
Outdoor mechanical rooms
Disaggregation of Revenue [Line Items]
Net sales		62		482
Outdoor mechanical rooms | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales		0		208
Outdoor mechanical rooms | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales		62		274
Outdoor mechanical rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales		0		0
Cleanroom systems
Disaggregation of Revenue [Line Items]
Net sales	6,966	5,355	25,506	35,063
Cleanroom systems | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Cleanroom systems | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Cleanroom systems | BasX
Disaggregation of Revenue [Line Items]
Net sales	6,966	5,355	25,506	35,063
Data center cooling solutions
Disaggregation of Revenue [Line Items]
Net sales	55,160	29,010	115,872	62,603
Data center cooling solutions | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Data center cooling solutions | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	599	3,284	1,731	6,524
Data center cooling solutions | BasX
Disaggregation of Revenue [Line Items]
Net sales	54,561	25,726	114,141	56,079
Water-source heat pumps
Disaggregation of Revenue [Line Items]
Net sales	1,403	3,898	4,558	13,192
Water-source heat pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	3,128
Water-source heat pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,403	3,898	4,558	10,064
Water-source heat pumps | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Part sales
Disaggregation of Revenue [Line Items]
Net sales	21,098	18,131	55,579	48,490
Part sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	20,113	17,756	53,404	47,623
Part sales | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1	4	7	5
Part sales | BasX
Disaggregation of Revenue [Line Items]
Net sales	984	371	2,168	862
Other
Disaggregation of Revenue [Line Items]
Net sales	6,662	9,041	16,234	22,349
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	5,602	7,281	13,271	18,142
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	852	1,023	2,439	3,459
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ 208	$ 737	$ 524	$ 748