Daikin 18,000 BTU Oterra Series Ductless Mini Split Condenser | R32 | Heat Pump

The Daikin RXF18AXVJU is an 18,000 BTU-class Oterra Series outdoor heat pump condenser designed for a compatible single-zone ductless mini-split system. Installed outside the building, it contains the inverter compressor, outdoor heat exchanger, and fan that transfer heat between the indoor space and outdoor air. When paired with the approved Daikin wall-mounted indoor unit, it provides both cooling and heat pump heating.

This listing is for the outdoor condenser only. It does not include the indoor air handler, refrigerant line set, communication cable, mounting equipment, condensate components, or other installation materials required for a complete system.

Key Features

• 18,100 BTU cooling capacity: Provides approximately 1.5 tons of cooling capacity as part of the approved Oterra system
• 21,600 BTU heating capacity: Reverses the refrigeration cycle to deliver heat through the matched indoor air handler
• Inverter swing compressor: Adjusts compressor output to match changing heating and cooling requirements
• R32 refrigerant: Engineered for operation within an approved Daikin ductless system using R32
• Single-zone design: Connects to one compatible indoor unit for dedicated temperature control of an individual area
• Automatic defrost: Helps manage frost accumulation on the outdoor coil during applicable heating conditions

The inverter-driven compressor can vary its operating speed instead of relying entirely on fixed on-and-off cycles. This allows the complete system to adjust output as indoor demand changes. Automatic restart helps return the system to operation after a power interruption, while anti-corrosion treatment helps protect the outdoor heat exchanger.

When paired with its approved indoor unit, the system has published ratings of up to 21 SEER2, 12 EER2, and 9.6 HSPF2. These efficiency ratings apply to the certified indoor-and-outdoor equipment combination and should not be assigned to the condenser by itself.

The outdoor unit has a published sound level of approximately 54 dB(A). Its cabinet measures approximately 36-5/8 inches wide, 27-13/32 inches high, and 13-13/16 inches deep. Published unit weight is approximately 101 pounds.

Compatibility and Installation Notes

The RXF18AXVJU is designed to pair with the Daikin FTXF18AXVJU Oterra Series wall-mounted indoor air handler. Using another indoor unit without verifying an approved Daikin match may affect system operation, capacity, efficiency certification, and warranty eligibility.

This condenser requires 208/230V, single-phase, 60 Hz electrical service. Published refrigerant connections measure 1/4 inch for the liquid line and 1/2 inch for the suction line. Maximum overcurrent protection is listed at 20 amps.

A qualified HVAC professional should install and commission the equipment according to Daikin requirements and applicable codes. Installation involves confirming the equipment match, electrical circuit and disconnect, refrigerant line sizing and length, communication wiring, outdoor mounting location, clearances, evacuation, leak testing, refrigerant charge, and R32 A2L safety requirements.

A professional load calculation should be completed before selecting the system. Climate, insulation, ceiling height, windows, room arrangement, occupancy, and internal heat sources can all affect required capacity.

Frequently Asked Questions

Does this listing include the indoor air handler?
No. This product is the RXF18AXVJU outdoor condenser only.

Which indoor unit is compatible with it?
The approved single-zone match is the Daikin FTXF18AXVJU wall-mounted air handler. 

Does the condenser provide heating and cooling?
Yes. It functions as a reversible heat pump when connected to the compatible indoor unit.

What refrigerant does it use?
The RXF18AXVJU is designed for R32 refrigerant.

What electrical supply is required?
The unit requires 208/230V, single-phase, 60 Hz power, with maximum overcurrent protection listed at 20 amps.

Confirm the matching indoor unit and all required installation materials before purchasing this Daikin Oterra condenser.