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The MIDEA MTJ‑12HWFNX‑QRD1W(GA) is a duct (concealed)‑type inverter air conditioner with a nominal capacity of 12,000 BTU (3.52 kW cooling / 3.81 kW heating), intended for concealed‑ceiling installations in offices, small commercial spaces and rooms where a low‑profile supply is required.
Duct (concealed) type indoor unit that delivers conditioned air through ceiling/plenum ductwork for discreet installation.
DC inverter compressor for smooth modulation, fast response and improved seasonal efficiency.
High seasonal efficiency: SEER ≈ 6.3 (A++) cooling and SCOP ≈ 4.0 (A+) heating on standard fiches.
Low external static pressure model with nominal static pressure 25 Pa (suitable for short duct runs).
Built‑in condensate pump (lift up to ~750 mm) for flexible drain routing.
R32 refrigerant with factory charge 0.72 kg and piping diameters 6.35 / 9.52 mm (liquid / gas).
Wide operating temperatures: cooling ‑15 °C to 50 °C, heating ‑15 °C to 24 °C.
Quiet operation: indoor sound pressure 34.5 / 30.5 / 29 / 23 dB(A) (various fan speeds).
Type: Duct (concealed) inverter air conditioner (indoor unit).
Rated cooling capacity:Â 3.52 kW (12,000 BTU).
Rated heating capacity:Â 3.81 kW.
Cooling capacity range: 0.53–3.99 kW.
Heating capacity range: 1.00–4.39 kW.
SEER (cooling):Â 6.3.
SCOP (heating):Â 4.0.
Power input (cooling / heating):Â 1.05 kW / 1.03 kWÂ (nominal).
Running current (cooling / heating):Â 4.75 A / 4.52 AÂ (nominal).
Nominal static pressure: 25 Pa (model nominal).
Airflow (indoor unit, Hi / Mi / Lo): 600 / 480 / 300 m³/h.
Indoor sound pressure (Hi / Mi / Lo / Quiet):Â 34.5 / 30.5 / 29 / 23 dB(A).
Sound power (indoor):Â 58 dB(A).
Outdoor airflow: 2,200 m³/h.
Outdoor sound pressure / power:Â 53.6 / 62 dB(A).
Refrigerant:Â R32 / 0.72 kg.
Piping diameters (liquid / gas):Â 6.35 / 9.52 mm.
Max refrigerant pipe length:Â 25 m.
Max height difference:Â 10 m.
Power supply: 220–240 V / 1 ~ / 50 Hz.
Indoor unit (W × D × H): 700 × 450 × 200 mm.
Indoor unit net weight:Â 17.8 kg.
Outdoor unit (W × D × H): 765 × 303 × 555 mm.
Outdoor unit net weight:Â 26.6 kg.
