Ductless split systems 9RLS3H, 12RLS3H, and 15RLS3H, respectively rated at 9,000, 12,000, and 15,000 BTU, offer quiet operation and near full heating capacity down to -15°F ambient and cooling operation down to 14°F. Extra Low Temp Heating (XLTH) models have built-in base heater and drainage holes for condensation. All RLS3H inverter units come with wireless remote, ion deodorizing filters, timers, and 4-way auto louver. Motion sensor-activated ESP (energy saving program) is also included.