AAON (AAON) reported Q1 adjusted earnings late Wednesday of $0.37 per diluted share, down from $0.46 a year earlier.
Four analysts polled by FactSet expected $0.23.
Revenue for the quarter ended March 31 was $322.1 million compared with $262.1 million a year earlier.
Analysts surveyed by FactSet expected $290.4 million.
Shares of the company rose 5.2% in after-market activity.