LG rooftop unit meets DOE challenge

USA: LG Electronics has successfully completed the laboratory validation phase of the US Department of Energy’s Commercial Building HVAC Technology Challenge for next-generation rooftop units.

LG’s 10-ton R32 heat pump rooftop unit – participating in the challenge’s 10- to 14-ton category – is developed to support performance in cold climates, delivering heating capacity and efficiency across a range of ambient conditions, including low temperatures, subject to installation and operating conditions. 

The unit is said to employ advanced technologies that allow for precise refrigerant flow control, compressor and electric heating capabilities, and dual-sensing control for humidity and temperature. 

Following successful laboratory validation at Intertek, LG’s heat pump RTU has entered its initial phase of real-world performance assessment through field trials. A prototype unit has been successfully installed at a large retail store in Zionsville, Indiana, and a second prototype unit is scheduled for installation at the Pacific Northwest National Laboratory research facility in Richland, Washington. Data collected from this first phase of field trials at these sites will be evaluated to assess energy performance, operation and reliability.

Additional field testing is planned for the summer to further validate performance across diverse commercial environments. Testing will be ongoing process through 2027, and the insights gained may inform future utility incentives, procurement specifications and regulatory consideration.