Comfort Systems USA (FIX) reported Q1 earnings late Thursday of $4.75 per diluted share, up from $2.69 a year earlier.
Analysts polled by FactSet expected $3.71.
Revenue for the quarter ended March 31 was $1.83 billion, up from $1.54 billion a year earlier.
Analysts surveyed by FactSet expected $1.77 billion.
The company said it increased its quarterly dividend by $0.05 to $0.45 per share, payable May 27 to holders of record May 16.
Shares of the company were up about 10% in recent after-hours activity.
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