Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 313,566	$ 283,957	$ 575,665	$ 549,910
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	225,727	218,214	435,867	420,216
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	31,373	30,081	55,620	63,493
BasX
Disaggregation of Revenue [Line Items]
Net sales	56,466	35,662	84,178	66,201
Rooftop units
Disaggregation of Revenue [Line Items]
Net sales	203,642	196,065	394,907	376,091
Rooftop units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	203,642	196,065	394,907	376,091
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	15,433	11,390	27,266	26,668
Condensing units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	61	0	61
Condensing units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	15,433	11,329	27,266	26,607
Condensing units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0	0	0
Air handlers
Disaggregation of Revenue [Line Items]
Net sales	14,867	15,210	27,032	30,469
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	12,496	12,610	22,474	24,831
Air handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	2,371	2,600	4,558	5,638
Outdoor mechanical rooms
Disaggregation of Revenue [Line Items]
Net sales		61		420
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		61		212
Outdoor mechanical rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales		0		0
Cleanroom systems
Disaggregation of Revenue [Line Items]
Net sales	11,227	17,086	18,540	29,708
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	11,227	17,086	18,540	29,708
Data center cooling solutions
Disaggregation of Revenue [Line Items]
Net sales	42,833	17,671	60,712	33,593
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	926	1,794	1,132	3,240
Data center cooling solutions | BasX
Disaggregation of Revenue [Line Items]
Net sales	41,907	15,877	59,580	30,353
Water-source heat pumps
Disaggregation of Revenue [Line Items]
Net sales	1,574	3,484	3,155	9,294
Water-source heat pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	398	0	3,128
Water-source heat pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,574	3,086	3,155	6,166
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	18,880	16,206	34,481	30,359
Part sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	17,974	15,963	33,291	29,867
Part sales | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0	6	1
Part sales | BasX
Disaggregation of Revenue [Line Items]
Net sales	906	243	1,184	491
Other
Disaggregation of Revenue [Line Items]
Net sales	5,110	6,784	9,572	13,308
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	4,111	5,727	7,669	10,861
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	944	1,201	1,587	2,436
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ 55	$ (144)	$ 316	$ 11