Even extremely small gaps can leak air which reduces the efficiency of your air conditioner.
How to seal window ac unit.
Step 3 examine the sash.
The best way to insulate window air conditioners is by using foam sealing strips to close off the crack between the window and the air conditioner.
Continue reading below our video of the day.
If the gap is deep you may need to press two pieces into the gap to fill it completely.
It will also save you in terms of energy consumption should you need to heat your home.
Choose easy to use acrylic latex caulk when fixing a window air conditioner.
It provides an easy to paint surface once the job is done which helps to hide unsightly marks on the wall s surface.
Cut the seal if necessary to fit your window and.
Then lift the window and place the seal under the lip of the window.
To fix this purchase some air conditioner foam seal at your local hardware store if there isn t any with your unit.
Cut foam weather stripping to length and attach to the window sash and frame.
Ask a helper to hold the air conditioner unit in place while you raise the bottom window sash up enough so that you can access the bottom edge.
Re close the window tightly.
Press the caulk into the gap.
Fill that gap with the foam seal included with the unit.
How to seal an air conditioner window gap.
2 position the end of the weatherstripping at one end.
Once the upper pane is secured there will be a gap between the two panes of the window.
Then you can cover the foam with a cover spread to prevent heat from escaping.
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.
Tear off a length of rope caulk to match.
So typically when you install a window air conditioner you have the window the upper part of the double hung window sits on top of the box and then it has sort of like wings that slide out the side of the air conditioner to kind of seal out the space between the air conditioner and the opening of the window correct.
This means both covering the outside body of the ac unit with a plastic bag to weatherize it and then covering it with a heavy fabric cover to protect it from the elements.
Narrow or hard to reach gaps measure the length of gaps that are 1 8 inch thick or smaller.
If you don t feel like removing a whole ac unit and sealing off the window the other good option is to seal a window air conditioner for the winter.
Lower the window sash until it rests on top of the vent panel.
Most window air conditioners come with an accordion style flap attached to the sides to fill the open space.
Adjust the ac unit s window vent panel to extend across the width of the opening.
