Note: units were built as 'elevator heater / cooler' modules and have low air flow. They technically do everything advertised but due to insufficient airflow, tend to freeze over if air flow is not boosted when in heating mode. Sold as-is, tested to run but no warranty.

12,000 - 18,000 BTU/h ducted unit heat pumps that can operate as an air conditioner and as a heater. This heat pump is 5 times more efficient than using an electric heater. It is at least twice as efficient as a 110 volt window AC unit and effectively three times more efficient when using with an off grid 24 volt system, without requiring an inverter. All parts inside are DC-native. This is "how it's done", if you are serious about the most efficient and reliable heat pump.

True 48 volt DC compressor and fans; this unit does NOT require the use of an inverter. This is the most efficient way for you to control your climate using a 48 volt power supply.

See unit in VR in your building.