- Anti-allergy enzyme filter which uses artificial blue enzyme catalyst on the filter filaments to capture harmful microbes
- Hybrid Catechin Pre-filter fibers infused with a bioflavinoid found in green tea that has antiviral and antioxidant properties
- A-Control for unit wiring allows communication and power between outdoor and indoor units on three wires
- Inverter-driven DC Compressor operates at high efficiency with outstanding reliability
- Pulse Amplitude Modulation (PAM) Control aligns electrical input wave to improve electrical power factor up to 98%
- Low-ambient Cooling Operation allows for efficient operation with outdoor temperatures as low as 14°F for the inverter models
- Powerful Mode provides 15 minutes of extra high-power cooling or heating
- Wide Airflow (MSY/Z-A24) using two lateral vane motors provides for seven horizontal airflow directions
- Optional connection to wired remote control -MAC-3971IF-E connects to the M-Net - CITY MULTI Controls Network
- Optional M-Net advanced system control -MAC-3991IF-E connects to the M-Net - CITY MULTI Controls Network
- Plus: Econo-Cool mode, 1°F step temperature setting, self-diagnostic function, swing mode (up and down), auto restart, dry mode operation
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