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Goodwill | 12 Months Ended
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Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill The changes in the carrying amount of goodwill in 2025 and 2024, in total and by segment, are summarized in the table below (in millions):
Segment: | Balance at December 31, 2023 (1) |  | Goodwill adjustment (2) |  |  | Balance at December 31, 2024 |  |  |  |  |  | Goodwill from business acquisition (3) |  | Balance at December 31, 2025
Home Comfort Solutions | $ | 26.1 |  |  | $ | — |  |  |  | $ | 26.1 |  |  |  |  |  |  | $ | 60.9 |  |  | $ | 87.0 |
Building Climate Solutions | 196.0 |  |  | (2.1) |  |  |  | 193.9 |  |  |  |  |  |  | 216.3 |  |  | 410.2 |
Corporate and Other | — |  |  | — |  |  |  | — |  |  |  |  |  |  | — |  |  | — |
| $ | 222.1 |  |  | $ | (2.1) |  |  |  | $ | 220.0 |  |  |  |  |  |  | $ | 277.2 |  |  | $ | 497.2 |
(1) The goodwill balances in the table above are presented net of accumulated impairment charges of $37.3 million, all of which related to impairments in periods prior to 2023. (2) On October 25, 2023, we announced the acquisition of AES. In connection with this acquisition, $40.4 million of goodwill was recorded in 2023 and included in the Building Climate Solutions reporting unit. In the first and fourth quarters of 2024, we made adjustments to our purchase price allocation of AES that resulted in a $2.1 million reduction of goodwill. (3) On October 15, 2025, we announced the acquisition of Duro Dyne and Supco. In connection with this acquisition, $277.2 million of goodwill was recorded, of which $216.3 million was included in the Building Climate Solutions reporting unit and $60.9 million was included in the Home Comfort Solutions reporting unit. Duro Dyne is included in our Business Climate Solutions segment and Supco is included in our Home Comfort Solutions segment. See Note 17 for additional information on the Duro Dyne and Supco acquisition. A qualitative review of impairment indicators was performed in 2025 for the Home Comfort Solutions and Building Climate Solutions segments. No impairment charges were recorded in 2025, 2024 or 2023, except to the extent of respective goodwill impaired in connection with the disposition of our European operations.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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