Air-to-Air assemblies offer dependable, compact performance by cooling objects via convection. Heat inside the chamber is absorbed by the cold side heat exchanger. The thermoelectric coolers pump heat from the cold side heat exchanger and dissipate through the hot side heat exchanger to the outside environment. The internal air circulation from the cold side fan helps minimize temperature gradient within the enclosure. This configuration is commonly used in sample storage chambers for medical and analytical instrumentation, electronic enclosures, and compartment storage for food and beverage applications.