ESCONDIDO, CALIFORNIA / January 22, 2026
Dalrada Technology Group, Inc. (f/k/a Dalrada Financial Corporation) (the “Company” or “Dalrada”) (OTCID: DHTI) today announced the publication of a peer-reviewed scientific study co-authored by engineers from Dalrada and Oak Ridge National Laboratory, featured in the Journal of Building Engineering. The study demonstrates the advantages of CO₂-based heat pump systems, especially in cold climates, delivering major efficiency gains, significant energy savings, and alignment with global low-GWP refrigerant regulations.
”We are excited to help accelerate the transition to high-efficiency, low-GWP heating and cooling around the world.
Brian BonarDalrada CEO and Chairman
Brian Bonar, Dalrada CEO and Chairman, stated, “The study validates the direction of Dalrada’s engineering roadmap. CO₂ heat pumps are proving to be a powerful solution for real-world decarbonization, and collaborating with Oak Ridge National Laboratory, this highlights our commitment to delivering next-generation clean energy technologies. We are excited to help accelerate the transition to high-efficiency, low-GWP heating and cooling around the world.”
The published study, titled “Comparative Performance Assessment of Air-Source and Ground-Source Heat Pumps Using CO₂ and R-410A with Water Well Integration: A Simulation Study,” provides detailed scientific evidence supporting CO₂ as a high-performance refrigerant capable of reliable operation in extreme conditions. In nationwide simulations, CO₂ ground-source heat pumps (GSHPs) maintained approximately 87% efficiency and 85.5% heating capacity as temperatures dropped from 47°F to –15°F, while air-source heat pumps (ASHPs) retained only 55% efficiency and 44.5% capacity under identical conditions. The systems also delivered 35–45% national energy savings compared to conventional ASHP configurations.
As high-GWP refrigerants such as R-410A continue to undergo phase-down across the U.S., UK, and Europe, the study reinforces CO₂ (R744) as a highly sustainable and future-ready alternative. The findings highlight CO₂’s performance advantages across varied climates as well as its compatibility with groundwater and water-well infrastructure—demonstrating strong potential for deployment in both new construction and retrofit environments.
Dalrada engineers’ direct involvement in the study supports the Company’s ongoing strategy to develop and commercialize scalable, low-GWP climate technologies that meet evolving global energy mandates. By validating the feasibility and performance of CO₂ ground-source systems, Dalrada continues advancing the next generation of high-efficiency heat pump platforms aligned with international sustainability objectives and market demand.
This research was funded by the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy, with support from the Building Technologies Office program managers.
The abstract is available on ScienceDirect:
Journal of Building Engineering | DOI: https://doi.org/10.1016/j.jobe.2025.114453
For more information about Dalrada Technology Group, Inc., the Company recommends that stockholders, investors, and any other interested parties read the Company’s public filings and press releases available at www.dalrada.com.
