Model overview
Most owners of a Marquee hood from La Cornue first notice that the fan runs on only one speed, or that the controls no longer respond the way they used to. Blower noise or vibration can follow as the unit works harder. Weak suction is the change people feel last, once the airflow has already dropped. Note which symptom came first and whether it happens on every setting. In the booking form for Los Angeles and Orange County, list the Marquee name, the width from the label, and the first symptom you saw.
Marquee is a La Cornue 36" or 44" hood. The model number is printed on the rating label, usually inside the hood behind the grease filters; match it letter for letter before booking, because a single letter can change parts.