v3.25.2
Warranties
6 Months Ended
Jun. 30, 2025
Guarantees [Abstract]  
Warranties Warranties
The Company has product warranties with various terms from one year from the date of first use or 18 months for parts, data center cooling solutions, and cleanroom systems to 25 years for certain heat exchangers. The Company has an obligation to replace parts if conditions under the warranty are met. A provision is made for estimated warranty costs at the time the related products are sold based upon the warranty period, historical trends, new products, and any known identifiable warranty issues.  
Changes in the warranty accrual are as follows:
 Three Months EndedSix Months Ended
 June 30,
2025
June 30,
2024
June 30,
2025
June 30,
2024
Warranty accrual:(in thousands)
Balance, beginning of period$23,610 $21,349 $24,341 $20,573 
Payments made(3,447)(3,037)(7,389)(5,659)
Warranty expense3,599 3,320 6,810 6,718 
Balance, end of period$23,762 $21,632 $23,762 $21,632 

Warranty expense (benefit) by reportable segment (Note 21) is as follows:
 Three Months EndedSix Months Ended
 June 30,
2025
June 30,
2024
June 30,
2025
June 30,
2024
(in thousands)
AAON Oklahoma$2,710 $3,039 $4,877 $5,997 
AAON Coil Products461 340 860 520 
BASX428 (59)1,073 201 
Total$3,599 $3,320 $6,810 $6,718