“1) what coolant is used 2) can it be used thru wall ?”
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The LG 14,000 BTU DUAL Inverter Smart Wi-Fi Enabled Window Air Conditioner - White, Model # LW1522IVSM, uses R-32 refrigerant. It is designed for installation in standard double hung windows with actual opening widths from 29" to 41". The top and bottom window sashes must open 19" from the bottom of the upper sash to the inside sill. The outside of the cabinet must extend outward for at least 12" and there should be no obstacles, such as a fence or wall, within 20" from the back of the cabinet because it will prevent heat radiation of the condenser. Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner. A standard single-hung or double-hung window is required for proper installation. Non-window installations, including using sleeves or wall openings, and other installation methods are not recommended...^Ivan.
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