True or False: Placing water bottles on the top shelf, in the door racks, and on the floor of a household-grade vaccine storage unit helps maintain stable temperatures.

The practice of placing water bottles in various areas of a household-grade vaccine storage unit is beneficial for maintaining stable temperatures within the unit. Water bottles act as thermal mass, which helps to buffer against temperature fluctuations. When placed on the top shelf, in the door racks, and on the floor, they can absorb heat, mitigating any changes caused by frequent door openings or environmental temperature changes.

Having water bottles in these locations helps ensure that the vaccine storage unit remains at a consistent temperature, which is crucial for preserving the efficacy of vaccines. This stable environment prevents the vaccines from experiencing temperature cycling that could potentially degrade their quality. This method is often recommended in vaccine storage guidelines as a practical way to enhance temperature stability, especially in non-commercial or home settings where temperature control may not be as sophisticated as in professional medical facilities.