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The MIDEA MTJ‑18HWFNX‑QRD1W(GA) is a duct (concealed)‑type inverter air conditioner rated at 18,000 BTU (nominal cooling 5.28 kW) and intended for concealed‑ceiling installations in offices, small commercial spaces or rooms where discreet supply air is required. It pairs with compatible Midea outdoor units (e.g., MOX330U‑18HFN8) and offers inverter efficiency, low‑noise operation and integrated condensate handling.
Duct (concealed) type indoor unit for supply‑air distribution via ceiling/plenum ducting; the unit is installed out of sight in the ceiling void.
DC inverter compressor (GMCC rotary) for smooth modulation, fast temperature response and improved seasonal efficiency.
High seasonal performance: SEER 6.50 (A++) cooling and SCOP 4.10 (A+) heating on standard fiches.
Nominal static pressure 25 Pa (model nominal), suitable for short duct runs; static pressure can be adjusted/configured on some variants.
Integrated condensate pump (lift up to ~750 mm) for flexible ceiling drainage routing.
Low sound levels: indoor sound pressure 36.5 / 34 / 31 dB(A) (high / mid / low).
R32 refrigerant with factory charge 1.15 kg and piping φ6.35 / φ12.7 mm (liquid / gas).
Wide operating range: cooling ‑15 °C to 50 °C, heating ‑20 °C to 24 °C.
Type: Duct (concealed) inverter air conditioner (indoor unit).
Rated cooling capacity: 5.28 kW (18,000 BTU).
Rated heating capacity: 6.01 kW.
Cooling capacity range: 1.32–6.16 kW.
Heating capacity range: 1.50–6.31 kW.
SEER (cooling): 6.50 (Class A++).
SCOP (heating): 4.10 (Class A+).
Power input (cooling): 1.59 kW (0.36–2.13 kW).
Power input (heating): 1.61 kW (0.50–1.85 kW).
Running current (cooling / heating): 7.10 A / 7.20 A (nominal ranges shown).
Nominal static pressure: 25 Pa (model nominal; static range up to 160 Pa in some variants).
Airflow (indoor unit Hi/Mi/Lo): 900 / 780 / 650 m³/h.
Indoor sound pressure (Hi/Mi/Lo): 36.5 / 34 / 31 dB(A).
Indoor sound power: 53 dB(A).
Outdoor airflow: 2,100 m³/h.
Outdoor sound pressure / power: 59 / 62 dB(A).
Refrigerant: R32 / 1.15 kg.
Piping diameters (liquid / gas): φ6.35 / φ12.7 mm.
Max refrigerant pipe length: 30 m.
Max height difference: 20 m.
Power supply: 220–240 V / 1 ~ / 50 Hz.
Indoor unit (W × H × D): 700 × 245 × 750 mm.
Indoor unit net weight: 24.4 kg.
Outdoor unit (W × H × D): 805 × 330 × 554 mm.
Outdoor unit net weight: 32.5 kg.
