Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 283,957	$ 208,814	$ 549,910	$ 391,585
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	218,214	157,481	420,216	297,348
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	30,081	26,754	63,493	48,689
BasX
Disaggregation of Revenue [Line Items]
Net sales	35,662	24,579	66,201	45,548
Rooftop units
Disaggregation of Revenue [Line Items]
Net sales	196,065	138,616	376,091	260,322
Rooftop units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	196,065	138,616	376,091	260,322
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	11,390	11,949	26,668	21,167
Condensing units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	61	0	61	242
Condensing units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	11,329	11,949	26,607	20,925
Condensing units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air handlers
Disaggregation of Revenue [Line Items]
Net sales	15,210	14,485	30,469	25,262
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	12,610	11,540	24,831	20,978
Air handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	2,600	2,945	5,638	4,284
Outdoor mechanical rooms
Disaggregation of Revenue [Line Items]
Net sales	61	260	420	924
Outdoor mechanical rooms | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0	208	554
Outdoor mechanical rooms | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	61	260	212	370
Outdoor mechanical rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Cleanroom systems
Disaggregation of Revenue [Line Items]
Net sales	17,086	8,246	29,708	16,285
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	17,086	8,246	29,708	16,285
Data center cooling solutions
Disaggregation of Revenue [Line Items]
Net sales	17,671	12,837	33,593	23,705
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	1,794	0	3,240	0
Data center cooling solutions | BasX
Disaggregation of Revenue [Line Items]
Net sales	15,877	12,837	30,353	23,705
Water-source heat pumps
Disaggregation of Revenue [Line Items]
Net sales	3,484	3,674	9,294	9,013
Water-source heat pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	398	1,876	3,128	4,862
Water-source heat pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	3,086	1,798	6,166	4,151
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	16,206	14,188	30,359	24,404
Part sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	15,963	13,857	29,867	24,073
Part sales | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	1	0
Part sales | BasX
Disaggregation of Revenue [Line Items]
Net sales	243	331	491	331
Other
Disaggregation of Revenue [Line Items]
Net sales	6,784	4,559	13,308	10,503
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	5,727	3,132	10,861	7,295
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,201	1,207	2,436	2,265
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ (144)	$ 220	$ 11	$ 943