How LG Inverter Heat Pumps Outperformed Gas Furnaces in Cold Climates: A New Study from the Pacific Northwest
As electrification continues to gain traction in residential construction, a new field study from the Pacific Northwest National Laboratory (PNNL), in partnership with LG, offers compelling data on how inverter-driven heat pumps stack up against gas furnaces—even in cold climates. The Study: 2023 Heating System Comparison in Spokane, WA The research evaluated two newly constructed, identical homes in Spokane, Washington. One home was equipped with a high-efficiency natural gas furnace and AC. The other used an LG Multi F MAX heat pump system paired with Art Cool Mirror indoor units—a ducted mini-split solution. Over the course of Spokane’s cold 2022–2023 winter (temperatures dropped as low as -9°F), both homes were monitored for energy use, comfort, and cost performance. Key Findings: • LG Heat Pump Was More Efficient The LG inverter…