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.

Neglecting to fill the window gap with the foam seal makes your window unit work harder to control the indoor temperature and potentially lets moisture dust and insects enter your home as well. What s the best way to fill that gap. How to seal an air conditioner window gap. Then lift the window and place the seal under the lip of the window.

Even extremely small gaps can leak air which reduces the efficiency of your air conditioner. 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. To fix this purchase some air conditioner foam seal at your local hardware store if there isn t any with your unit. Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task.

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. 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. Re close the window tightly. 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.

Step 3 examine the sash. Most window air conditioners come with an accordion style flap attached to the sides to fill the open. But if done incorrectly it can lend a sloppy amateurish look.