Dometic has added the SP-900, a low-power bunk cooler, to its line of engine-off battery-powered auxiliary air-conditioning products. Driven by what’s said to be a rugged, quiet 12-volt Danfoss compressor, it produces 3100 BTUs/hr of capacity to cool the bunk area when sleeping.
The split system consists of a condensing unit that mounts on the rear of the cab and an evaporator unit that mounts above the bunk or seat. The two units are connected by precharged refrigerant linesets. All components are hermetically sealed, and no refrigerant charging is needed at installation.
The inside unit has four separate discharge air vents that can be adjusted as needed to optimize airflow in any direction. A digital thermostat and keypad provide "intuitive" control over all system functions.
The system runs on power taken directly from the battery bank. No inverter is needed as a low-voltage sensor and automatic shut-off circuit ensure the system will not deplete the truck’s batteries.
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