Where should the ambient air thermometer in a hot holding unit be located?

Where should the ambient air thermometer in a hot holding unit be located?

• A. Near the door
• B. In the coolest part of the unit
• C. In the warmest area
• D. On top of the unit

Answer: (B)

In hot holding, the ambient air thermometer should be placed in the coolest part of the unit. The reason is that this spot is most at risk for temperature drops, so monitoring it ensures the entire unit stays above the safe minimum (135°F). If the coolest area remains at or above the requirement, warmer areas will be at least as hot, keeping all exposed foods safe. Placing the thermometer in a warmer area or near a door or heat source can give falsely high readings or miss cold spots, which could allow unsafe temperatures to occur.

In hot holding, the ambient air thermometer should be placed in the coolest part of the unit. The reason is that this spot is most at risk for temperature drops, so monitoring it ensures the entire unit stays above the safe minimum (135°F). If the coolest area remains at or above the requirement, warmer areas will be at least as hot, keeping all exposed foods safe. Placing the thermometer in a warmer area or near a door or heat source can give falsely high readings or miss cold spots, which could allow unsafe temperatures to occur.