The Dave Lennox Signature™ Collection and Elite® Series air conditioners and heat pumps quietly deliver a superior level of comfort. Exclusive SilentComfort™ Technology from Lennox is not limited to indoor products. Lennox knows that you enjoy the serenity of your home's outdoor environment too. That's why Lennox has designed the quietest air conditioner you can buy. Lennox has developed a patent-pending, precision-balanced, direct-drive fan design that delivers whisper-quiet operation. he insulated compressor compartment keeps operating sound to a minimum.