All double hung windows which have the top sash painted shut can be repaired and modified to allow for maximum venting at a higher level in the room. Installing a new high operable window or skylight will usually cost less than a single room air conditioner, and require no ongoing energy consumption while providing good ventilation and cooling. See the topic page on Roof Venting Systems . Most forced air furnaces can be used to move cool air through the house. This is a relatively low energy consuming operation, and is accomplished by running the fan portion of the system without the heating system in operation.
Some furnaces have instructions printed on the furnace for summer cooling operation.
Additional information about using the forced air furnace as a cooling system can be obtained from the furnace service company. Most heat pump type furnaces are designed to provide summer air conditioning. While this is a relatively low cost method to mechanically cool the house, it does require a considerable amount of electric energy and requires maintenance of the heat pump every six to twelve months by a qualified service person. Inc. All Rights Reserved.