How To Seal Ac Window Gap

Most window air conditioners have an expanding curtain on either side to help seal any gaps between the window frame and the air conditioner but sometimes this seal isn t perfect.

How to seal ac window gap.

Once you ve made your choice on what product will give the best result for you you can head on over to the hardware store and pick it up. In addition to getting a product to block your long window gaps you should also consider getting a pulley seal which is specially made to block the air that slips in near window cords. Most window air conditioners have an expanding curtain on either side to help seal any gaps between the window frame and the air conditioner but sometimes this seal isn t perfect. I have an air conditioner that looks similar to this except mine doesn t have the flaps on the sides leaving a large open gap between the air conditioner and the window frame.

Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task. To fix this purchase some air conditioner foam seal at your local hardware store if there isn t any with your unit. Re close the window tightly. The air conditioner gets taken down in winter so permanent solutions are no good.

Unfortunately these are rarely anything close to air tight and the air conditioner itself has to allow air in from the outside by virtue of its construction. What s the best way to fill that gap. Most window air conditioners come with an accordion style flap attached to the sides to fill the open. Then lift the window and place the seal under the lip of the window.

Window air conditioners sit on the windowsill and typically have accordion style fins on either side of the unit that act to seal off the window. Even extremely small gaps can leak air which reduces the efficiency of your air conditioner. But if done incorrectly it can lend a sloppy amateurish look.