Place insulation on either side of the air conditioner and use weather stripping to fill the gap between the upper window insert and a/c unit. You can also use L brackets to keep the upper window insert in place if you don’t want to install a mullion (but mullions have the best noise reduction).

How do you insulate against outdoor noise?

How to soundproof a room from outside noise

  1. Seal up holes and cracks. Be extremely thorough. …
  2. Tighten up existing door and window openings. …
  3. Install high-quality storm windows. …
  4. Add caps to chimneys (Fig. …
  5. Add insulation to the attic and walls. …
  6. Add central air conditioning. …
  7. Add mass to walls.




Do window AC units let in outside noise?

The foldable frame around either side lets in a considerable amount of outside noise; it’s just as if the window was open. In fact, I’d swear it amplifies outdoor noise, perhaps through the AC unit itself. Quite hard to get some sleep.

How do you dampen a window air conditioner?

Here’s how to keep your window air conditioner running quietly:

  1. Keep Your Filter Clean! Around once a month during the hot season, take the filter out and give it a good soak. …
  2. Look After Your Coils. …
  3. Straighten The Fins. …
  4. Wipe The Fan Blades. …
  5. Don’t Dirty The Drainage. …
  6. Keep It Cosy.

How do I block outside noise from my windows?





Sound-reducing window treatments, which start at about $20 each, are another cost-effective way to go.

  1. Install window inserts. …
  2. Replace single-pane windows with double-pane equivalents. …
  3. Seal gaps along windows with acoustic caulk. …
  4. Hang sound-dampening curtains to block sound. …
  5. Install double-cell shades.

Can you soundproof a window?

Add thick insulation tape to the bottom of the window and the area where the window meets the sill. Once any areas where sound can get through are fully covered and sealed with soundproof foam, tape or insulation, you should be protected from most noise pollution.

How do you insulate a window?

5 ways to insulate your apartment windows

  1. Use window insulation film. Window film creates an insulating barrier between the interior of your apartment and your windows. …
  2. Cover your windows with bubble wrap. …
  3. Install removable magnetic window insulation. …
  4. Use rope caulk to seal cracks. …
  5. Add thermal curtains to your windows.


Do soundproof window inserts work?

Every grade of Indow window inserts reduces outside noise by at least 50% when placed over an operable single-pane window. Our Acoustic Grade does an even better job, reducing noise by 70%. * (If you have double-pane windows, you must use Acoustic Grade for reducing noise.)