Choosing A Chest Freezer For Garage Use Many freezer makers now state that their products can be kept in garages and other unheated outdoor spaces. This is achieved by using a 'concealed condenser' that allows them to function at temperatures below the -10C threshold specified in their official climate classification. https://www.frydge.uk/products/hisense-297l-chest-freezer-4-star-freezer-rating