The Daikin RXM18WVJU9 is a high-performance, inverter-driven heat pump outdoor unit from Daikin’s ATMOSPHERA series, engineered for single-zone ductless mini-split systems. Designed for dependable year-round comfort, this unit delivers powerful heating and cooling while maintaining excellent energy efficiency. The use of environmentally friendly R-32 refrigerant helps reduce environmental impact while improving system performance.
Built to perform in extreme climates, the RXM18WVJU9 provides reliable heating down to -13°F and effective cooling in outdoor temperatures up to 115°F. Its durable, corrosion-resistant construction, quiet operation, and compact design make it an ideal solution for residential and light commercial applications. A 12-year limited warranty (with registration) ensures long-term reliability and peace of mind.
Key Features
18,000 BTU cooling capacity for larger rooms and open spaces
Inverter-driven compressor for precise temperature control and energy efficiency
Heating operation down to -13°F for cold-climate reliability
Cooling operation up to 115°F in high ambient temperatures
Eco-friendly R-32 refrigerant with lower global warming potential
Quiet outdoor operation around 54–55 dB(A)
Corrosion-resistant heat exchanger for extended outdoor durability
12-year limited warranty on parts and compressor (registration required)
Outdoor Unit Specifications
Model Number
RXM18WVJU9
Series
ATMOSPHERA
Refrigerant
R-32
Nominal Cooling Capacity
18,000 BTU/h
Nominal Heating Capacity
21,600 BTU/h
SEER2
Approximately 22.7
HSPF2
Approximately 10.0
EER2
Approximately 12.5
Cooling Operating Range
50°F to 115°F
Heating Operating Range
Down to -13°F
Sound Level (Cooling)
Approximately 54 dB(A)
Sound Level (Heating)
Approximately 55 dB(A)
Power Supply
208/230V, 60Hz, 1-Phase
Liquid Line Size
1/4"
Gas Line Size
1/2"
Maximum Piping Length
Up to approximately 98.5 ft
Dimensions (H x W x D)
28-15/16" x 34-1/4" x 12-5/8"
Unit Weight
Approximately 132 lbs
Warranty
12-Year Limited Parts & Compressor (with registration)
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