Johnson Controls has expanded its TempMaster OmniElite single package rooftop unit to include up to 150 tons of cooling, for a full range that now offers 50 to 150 tons of cooling capacity. The unit features a footprint up to 20% smaller than standard units, double-wall construction, single-point power connection, and efficiency ratings that exceed ASHRAE 90.1 standards.

Double-wall construction, which includes the roof, floor, doors and walls, helps prevent insulation fibers from entering the conditioned air and facilitates periodic cleaning of the unit to prevent harmful buildup of bacteria or contaminants. Double-sloped drain pans also protect against corrosion and bacterial growth for improved air quality.

The new TempMaster units feature multi-step capacity control, high-efficiency scroll compressors, and fully modulating gas heat. Johnson Controls says the systems also include advanced ventilation control to avoid waste of conditioning excess outside air and monitor unit functions for maximized efficiency. Also, an airside economizer offers compressor-free cooling when outdoor air is cool and dry.

--Johnson Controls, TempMaster products