Securing your window air conditioner and ensuring safety around windows is essential for homes and offices. The right window lock can prevent falls, deter intruders, and help maintain proper ventilation without compromising security. Below is a summary table of top-rated air conditioner window locks designed for sliding and vertical windows, offering adjustable sizes, durable materials, and key-lock features for enhanced protection.
Product Name | Brand | Key Features |
---|---|---|
Sliding Window Locks (2 Sets) Adjustable Security Lock | HYIEOU | Childproof, multi-functional for vertical/horizontal windows, key lock |
Sliding Window Locks with Key, Aluminum Adjustable Lock (4 Sets) | CRODOER | Enhanced security design, two fixed hole lock, protective washers |
Window Locks 4 Sets Sliding Security Locks with Key | BMEWKOS | Double lock design, protective washer, two keys included |
WooFog Adjustable Window Security Bars with Rubber Feet (2 PCS) | WooFog | Adjustable steel bar, micro-adjustable length, rubber feet, multi-purpose |
ZRFCXE Sliding Window Locks with Key, 4 Pack | ZRFCXE | Upgrade protection with dual fixing holes, protection pads, adjustable |
Sliding Window Locks (2 Sets) Adjustable Security Lock

HYIEOU offers these sliding window locks designed for both up-and-down vertical windows and horizontal sliding windows. Featuring a childproof locking mechanism, these locks add a second layer of safety to prevent children and pets from falling, and guard against potential intruders. The locks can secure windows either fully closed or slightly open for ventilation. Ideal for window air conditioner installations, the locks fit window rails with a height greater than 0.48 inches and width less than 0.61 inches. Their multi-functional design suits homes, bedrooms, apartments, and offices.
Sliding Window Locks with Key, Aluminum Adjustable Lock (4 Sets)

CRODOER presents a 2025 enhanced security sliding window lock crafted from durable aluminum alloy with a two-fixing-hole design for stronger hold. Each lock includes a vertical key to prevent unauthorized unlocking and features a protective washer to avoid window damage. Installation is simple with no drilling required and offers two mounting options depending on the track size. The lock fits sliding and vertical windows with rails taller than 0.48 inches and less than 0.61 inches wide. The widened lock body supports ventilation while ensuring security.
Window Locks 4 Sets Sliding Security Locks with Key

BMEWKOS provides window locks tailored for sliding windows, doors, and vertical windows where rail width is less than 0.39 inches. The double lock design with two fixing holes greatly improves security, and protective washers prevent scratches while enhancing grip. Installation comes with two types of keys – hex wrench and vertical wrench – allowing versatile mounting options without additional tools. The locks feature easy 3-step installation for securing windows fully or partially open for ventilation.
WooFog Adjustable Window Security Bars with Rubber Feet (2 PCS)

WooFog security bars provide an adjustable steel locking solution from 17 to 33 inches with rubber feet for extra grip and length micro-adjustment. They are ideal for those who want ventilation but prioritize safety, particularly protecting children and pets from falling. Suitable for sliding and vertical windows or patio doors, these bars block forced entries and can serve as heavy-duty locks while allowing fresh air flow. Their patented design suits various window sizes with robust impact resistance.
ZRFCXE Sliding Window Locks with Key, 4 Pack

ZRFCXE offers a sliding window lock pack designed for windows and doors with track height greater than 0.48 inches and width less than 0.61 inches. Featuring an upgrade in protection, each lock has two fixing holes to enhance stability and holding power. Protection pads are included to prevent window scratching. These locks are suitable for securing windows partially open or fully closed, reducing risks of falls, and deterring intruders. They are widely used in homes, kindergartens, bedrooms, and offices.
Buying Guide: Key Considerations For Air Conditioner Window Locks
Choosing the ideal window lock for your air conditioner installation and window security involves careful assessment of several factors:
- Window Type Compatibility: Ensure the lock fits your window style—sliding (horizontal), vertical sliding, or double-hung. Most locks specify compatibility.
- Track Dimensions: Measure the window rail height and width accurately. Locks have minimum and maximum dimensions they support, which is critical for proper installation.
- Material and Build Quality: Opt for durable materials like heavy-duty aluminum or steel for long-lasting security that resists deformation and forced entry attempts.
- Locking Mechanism: Consider locks with key mechanisms for added security, especially if childproofing or anti-theft protection is a priority.
- Installation Process: Look for ease of installation—no-drill options are preferred for renters or quick setups. Availability of detailed instructions and included tools helps too.
- Protective Features: Protective washers or pads prevent scratches on window tracks, preserving window integrity while improving lock stability.
- Adjustability: Adjustable locks and security bars can fit a range of window sizes and provide flexibility for ventilation settings.
- Multi-Purpose Use: Some locks are suitable for doors and windows, expanding usability within your home environment.
By considering these aspects, you can select an air conditioner window lock that balances ventilation needs without compromising on safety and security.