Cleaning and sealing of the air duct, cleaning ventilation cleaning, fireplace, installation of UVC lamps and ERV installation. Nadca and BPI certified by Nadca and BPI, 6 -month warranty, 8 a.m. to 20 pmwe we provide services in Manhattan, Staten Island, Brooklyn and Brooklyn and Queens. The team is well informed, educated and friendly. We keep the slim area after the service.