LG Electronics 14000 BTU Dual Inverter Window Air Conditioner … LG Dual Inverter Smart Air Conditioner review: This Wi-Fi-connected window air conditioner is a major step up You can make your old A/C unit smarter, but you can’t make it more efficient. While there's plenty of power for larger rooms this is also at home quietly cooling smaller spaces. LG's new line of Dual Inverter Smart Air Conditioners are quiet, energy-efficient, and Wi-Fi-enabled. 9,500 BTU dual inverter window air conditioner cools approximately 450 sq. The window air conditioner in my apartment is loud. ft. Dual inverter compressor eliminates unnecessary noise (44 dBA on low) and provides cool temperatures with up to 15% energy … Its droning hum is speckled with the chattering of plastic components vibrating, like teeth on a freezing cold day. The LG Dual Inverter Window Air Conditioner is one of the best for low running costs. Thanks to LG app … LG Electronics 22,000 BTU Dual Inverter Smart Window Air Conditioner with Wi-Fi Enabled and Remote in White (1317) Model# LW2217IVSM $ 699 00.