Revenue Recognition - Disaggregated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 265,953	$ 182,771
AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	202,002	139,867
AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	33,412	21,935
BasX
Disaggregation of Revenue [Line Items]
Net sales	30,539	20,969
Rooftop Units
Disaggregation of Revenue [Line Items]
Net sales	180,026	121,706
Rooftop Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	180,026	121,706
Rooftop Units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0
Rooftop Units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0
Condensing Units
Disaggregation of Revenue [Line Items]
Net sales	15,278	9,218
Condensing Units | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	242
Condensing Units | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	15,278	8,976
Condensing Units | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0
Air Handlers
Disaggregation of Revenue [Line Items]
Net sales	15,259	10,777
Air Handlers | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0
Air Handlers | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	12,221	9,438
Air Handlers | BasX
Disaggregation of Revenue [Line Items]
Net sales	3,038	1,339
Outdoor Mechanical Rooms
Disaggregation of Revenue [Line Items]
Net sales	359	664
Outdoor Mechanical Rooms | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	208	554
Outdoor Mechanical Rooms | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	151	110
Outdoor Mechanical Rooms | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0
Cleanroom Systems
Disaggregation of Revenue [Line Items]
Net sales	12,622	8,039
Cleanroom Systems | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0
Cleanroom Systems | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	0	0
Cleanroom Systems | BasX
Disaggregation of Revenue [Line Items]
Net sales	12,622	8,039
Data Center Cooling Solutions
Disaggregation of Revenue [Line Items]
Net sales	15,922	10,868
Data Center Cooling Solutions | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	0	0
Data Center Cooling Solutions | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,446	0
Data Center Cooling Solutions | BasX
Disaggregation of Revenue [Line Items]
Net sales	14,476	10,868
Water-Source Heat Pumps
Disaggregation of Revenue [Line Items]
Net sales	5,810	5,339
Water-Source Heat Pumps | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	2,730	2,986
Water-Source Heat Pumps | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	3,080	2,353
Water-Source Heat Pumps | BasX
Disaggregation of Revenue [Line Items]
Net sales	0	0
Part Sales
Disaggregation of Revenue [Line Items]
Net sales	14,153	10,216
Part Sales | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	13,904	10,216
Part Sales | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1	0
Part Sales | BasX
Disaggregation of Revenue [Line Items]
Net sales	248	0
Other
Disaggregation of Revenue [Line Items]
Net sales	6,524	5,944
Other | AAON Oklahoma
Disaggregation of Revenue [Line Items]
Net sales	5,134	4,163
Other | AAON Coil Products
Disaggregation of Revenue [Line Items]
Net sales	1,235	1,058
Other | BasX
Disaggregation of Revenue [Line Items]
Net sales	$ 155	$ 723