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Warranties | 6 Months Ended
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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 Ended |  | Six 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 expense | 3,599 |  |  | 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 Ended |  | Six 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 Products | 461 |  |  | 340 |  |  | 860 |  |  | 520 |
BASX | 428 |  |  | (59) |  |  | 1,073 |  |  | 201 |
Total | $ | 3,599 |  |  | $ | 3,320 |  |  | $ | 6,810 |  |  | $ | 6,718 |

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(5) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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