In contrast to the usual household chest freezers or upright freezers with wire baskets that can be found at various retailers including Amazon next to whirlpools and other rather ordinary household products, ultra cold temperature freezers are highly specialized devices far more powerful than fridge-freezers or the extra-freezer on casters. They can reach temperatures that household devices – even the bestselling, best chest freezers – cannot achieve with cold air from an ordinary compressor.
Although ULT freezers might share some typical functions with small chest freezers (like a power-on indicator light that helps to become aware of power outage), ultra low temperature freezers need not only to provide lower, but also more stable temperatures than a compact chest freezer, since it contains far more delicate substances.