RTUs are also undergoing an efficiency revolution, said Melissa Schumann, who leads the large packaged rooftop portfolio at Trane Technologies. There’s been an increase of up to 30% in the U.S.

Fully packaged and with compact designs ... the press release said. Trane has also completed the redesign of the Axiom rooftop water-source heat pump portfolio, adding 3- to 10-ton and 17.5-ton ...