Window Air Conditioner Security
How to secure a window AC unit…
During the summer months, window AC security is important. When the weather warms up, it’s time to install your window air conditioners. But they can become a target for burglars.
A burglar could get into your home through a window after pushing in the air conditioner on the 1st-floor. Or the burglar might just steal it!
Here’s what you can do about it. I’m going to list a number of tips and things you can do to help with window air conditioner security.
Read on for several up-to-date suggestions!
Screw the Top Mounting Rail Window AC unit into Sash
This works for wood windows (see below for vinyl or metal), and other options.
Most window air conditioners are installed and simply held in place by gravity. It’s tucked behind the window sash which keeps it from falling out. Maybe there’s a small screw holding the top rail and a few on the side for the accordion side-panels.
Many people don’t even install a single support screw into the top rail because the air conditioner is held in place by gravity and its downward force against the window sash. Good enough, right?
So, what can you do to better secure your window air-conditioner?
At least install a screw through the air-conditioner’s top mounting rail into the window sash. Most window air conditioners include a drilled-out hole in the top center to accommodate this.
Consider drilling additional holes through the same top mounting rail to accommodate more screws into the lower window sash (see illustration below).
UPDATE: If you cannot screw into the window, there are several alternate ways to secure the air conditioner which I’ve listed below. One of which is this clever little bracket that will keep the AC unit from being pushed out:
To install the security bracket, the AC was positioned properly in the window and the small u-shaped end of the bracket was placed over the upper flange (support bar) of the air conditioner.
The window was then closed over the large u-shaped end of the bracket.
Thin weather stripping was placed between the window sash and the upper flange of the air conditioner to seal the small gap (due to the thickness of the bracket).
The bracket was secured to the flange of the air conditioner by tightening the provided bolt through the bottom hole. The bolt wasn’t overly tightened since it essentially prevents the bracket from sliding too much forward and back.
(I didn’t use the bolt in the top hole since the air conditioner flange was too high.)
Although the bracket looks to be a bit loose, it can’t be removed and the air conditioner can’t be pushed out of the window unless the bottom sash is raised.
The provided window locks didn’t work for my windows, so I used the Windobully Window Lock to prevent the sashes from being raised or lowered.~ from a product review
Install Security Window Lock for your Portable Air Conditioner
A convenient window lock for air conditioner security: (Sliding Window Lock, Window Stop, Window Restrict)
A window lock will prevent or deter the burglar from pushing and forcing up the window.
The AC unit may be screwed to the sash, but if the window itself isn’t locked it’s still possible to force open and reach in and shove the air conditioner. Install window frame locks to prevent this.
AC Window Lock – Vinyl & Aluminum
For Vinyl Windows – you might consider this popular window lock as shown below:
Window Security Wedge
Another clever idea is a window wedge.
>> Window Stopper
(view on amzn)
Window Air Conditioner Security Bars
This adjustable window security bar is designed to fit between the window and the top frame to prevent it from opening beyond an adjustable opening distance. Perfect for when a portable AC is installed.
The security bar fits into the gap. Measure the gap and be sure you purchase the right security bar for that measurement.
Here’s an example of what I’m talking about:
(Measure the gap with the AC installed to determine which security bar will fit)
>> EZ-AC Window Security Bar – Extends 7 1/2″-14″
(Made in The U.S.A. by Veteran Owned Business)
(view on amzn)
Here’s another one:
>> Sturdy Steel, Extends from 15 1/2″ to 29 1/2″
(view on amzn)
‘Do It Yourself’ Window Security Bar:
While the air conditioner is mounted in the window, measure the distance from top of the lower window frame to the very top of the double-hung frame itself (with AC installed). Cut a wooden dowel to snugly fit – which can be wedged to prohibit the window from opening further…
Window Air Conditioner Bracket
It’s also a good idea to get a window air conditioner bracket. It makes it harder for the burglar to get the air conditioner out from the outside. You could also secure the portable AC unit to the bracket in various ways.
Stick-on Window Alarm
Here’s a great product that will absolutely deter a would-be burglar.
The second they begin to force open the window, this cleverly designed window alarm will alert (based on motion/vibration sensing).
It simply ‘sticks’ onto the window, inside. Small, only about 3″ diameter. It has an ‘on/off’ switch for your convenience when opening the window yourself…
Stick-on Burglar Alarm Security Window Sticker Decal
Deterrence! On the window with the air conditioner, stick on a home security window decal where it will be plainly visible.
This alone may be enough to prevent a break-in as the burglar may move along to an easier target.
Window AC Accordion Side Panels
Depending on the width of the window air conditioner, the ‘accordion’ side panels may be extended fairly wide, or maybe not. This is an obvious weak point of entry for a burglar to punch through and gain leverage to shoving the air conditioner itself.
While the aforementioned suggestions will slow down or deter a burglar (likely to the extent of giving up without attracting attention), you might consider to (do it yourself) build wooden side panels to replace the plastic ‘accordion’ panels.
Window Air Conditioner Security Tips
Ultimately, you are not going to stop a determined burglar. But you will probably stop the majority of amateur burglars who are looking for quick and easy entry.
If one of them happens to pick your home because they see a window air-conditioner hanging out of a 1st-floor window, when given a hard push and it doesn’t budge, they will probably move on.
If the burglar pulls or pushes on the air conditioner while attempting to lift the window sash, it will not readily come if you’ve taken the precautions mentioned above.
Burglar Proof Tips
Okay, maybe more accurately stated, burglar resistant…
Tip: Consider removing any 1st-floor window air-conditioners when going on an extended vacation. A few minutes effort may be worth it…
Tip: You could plant thorny bushes… rose bushes, blackberry bushes etc. just below your windows…
Replace the side panels with plywood between the sash and jamb.
A wire cage to cover the outside of the AC unit.
Amazon Recommends this Air Conditioner:
Perfect for a bedroom, a small room, great reviews:
Have it shipped right to your door:
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