The "Push-In" Vulnerability
Window air conditioners are heavy, but they are rarely secured. A common burglar tactic is to simply push the unit into the room. The unit falls on the floor, leaving a wide-open window for entry. It takes less than 5 seconds and makes surprisingly little noise if caught.
Standard window locks are useless because the window is already open to accommodate the AC.
How AC Security Bars Work
Window AC security bars create a rigid mechanical link between the window sash and the frame. They prevent the window from being raised any further, effectively "locking" the unit in place.
Double Duty Protection
A good bar does two things: 1) Stops the sash from lifting. 2) Prevents the AC unit from being pushed inward (if using a bracing bar model).
Types of Bars
Not all bars fit every window. Choose based on your specific setup:
1. The Sash Lock (Top Mount)
Installed above the AC unit. It is a telescoping bar that wedges between the top of the sliding window and the upper frame.
2. The AC Brace (Bottom Mount)
Installed under the AC unit (exterior). Supports the weight of the AC while anchoring it to the building facade.
Installation Tips
Most window AC security bars are DIY-friendly, but precision matters.
- Measure Twice: Ensure the bar is extended fully to create tension.
- Screw it Down: Friction bars can slip. Always use the provided screws to anchor the bar into the sash frame.
- Gap Check: Ensure there is no gap wider than 4 inches on the sides of the AC unit (use plywood or plexiglass, not cardboard).
Security WB Recommendations
Don't trust plastic locks. We recommend solid steel bars with tamper-proof mounting hardware.
Check out our curated list of heavy-duty AC bars at IAMANOS.COM.
