™ Warranty 10-year limited warranty on covered components. Every air conditioner or heat pump needs an indoor unit to blow conditioned air through the home, and there are several to choose from. Typical air handlers simply circulate heated or cooled air through the air duct system. The CBX40UHV does this plus so much more. The quieTesT and mosT efficienT air handler you can Buy.* In heating mode, the CBX40UHV increases airflow slowly, virtually eliminating the “cold blow” common with some air ha