Lennox now offers HVAC construction rooftop units in its Energence line that it says are the most energy efficient, lightest and quietest in its class.
The units have an integrated energy-efficiency ratio up to 21.5 and up to a 13.9 energy-efficiency ratio. They exceed the requirements of the American Society of Heating, Refrigeration and Air-Conditioning Engineers’ standard 90.1 by 92 percent, according to Lennox. They also meet California’s Title 24 energy requirements.