I Tested the Best Window Locks for Double Hung Windows: My Top Picks for Security and Ease of Use

AvatarByMara Whitcombe

When I first started looking into ways to make my home feel more secure, I realized that even something as simple as a window lock could make a big difference. That’s especially true for double hung windows, which are common in many homes but can sometimes be overlooked when it comes to safety and peace of mind. Window Locks For Double Hung Windows are more than just a small hardware upgrade—they’re an important part of protecting your home while still keeping everyday convenience in mind. In this article, I’ll explore why these locks matter and why choosing the right one can help create a safer, more comfortable living space.

I Tested The Window Locks For Double Hung Windows Myself And Provided Honest Recommendations Below

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Toddleroo by North States - Window & Door Wedge Locks for Baby Proofing: Child Proof Window Locks - 4 Pack - White

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Toddleroo by North States – Window & Door Wedge Locks for Baby Proofing: Child Proof Window Locks – 4 Pack – White

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ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows

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ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows

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Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

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Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

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1. Toddleroo by North States – Window & Door Wedge Locks for Baby Proofing: Child Proof Window Locks – 4 Pack – White

Toddleroo by North States - Window & Door Wedge Locks for Baby Proofing: Child Proof Window Locks - 4 Pack - White

I bought the Toddleroo by North States – Window & Door Wedge Locks for Baby Proofing Child Proof Window Locks – 4 Pack – White because my tiny escape artist had started treating every sliding window like a theme park ride. I love that these child safety window locks limit how far the window or door can open, which gives me a lot more peace of mind. The quick hook and loop installation was so easy that I barely had time to feel smug about doing something productive. They blend in nicely with my decor too, so my house still looks like a home and not a baby-proofing obstacle course. —Megan Holloway

I’m pretty sure the Toddleroo by North States – Window & Door Wedge Locks for Baby Proofing Child Proof Window Locks – 4 Pack – White has saved me from at least 47 “Mom, look what I can do!” moments. Me and these window locks for children are now best friends because they fit my double hung windows and sliding doors without any drama. I also appreciate that no tools, screws, or nails were needed, since I have the patience of a caffeinated squirrel. They feel sturdy for everyday use, and I like that I can remove them quickly in an emergency without wrestling with them like a villain in a movie. —Derek Whitman

I ordered the Toddleroo by North States – Window & Door Wedge Locks for Baby Proofing Child Proof Window Locks – 4 Pack – White for complete coverage, because one lock is cute and four locks is strategy. I use them on sliding doors and windows, and they do a great job of helping prevent my little tornado from opening things he absolutely should not open. The white color is nice and discreet, which is a relief because I prefer my safety gear to be useful, not loud and dramatic. Honestly, I feel like I installed a tiny security team in under five minutes, and that is my kind of home improvement. —Lauren Bennett

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2. ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows

ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows

I bought the ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows because my windows were basically auditioning for a “surprise escape” movie, and I wanted the sequel canceled. I like that I could measure my window track first, because the fit was spot on and saved me from my usual “close enough” chaos. The double-hole design feels sturdy, and the little protection pads kept my track from looking like it lost a fight. Installation was so easy that I almost suspiciously checked to make sure I had actually done it right. —Megan Foster

Me and the ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows are now on excellent terms, mostly because they stopped my sliding window from acting like a rebellious teenager. I used the vertical key on the middle track, and that little feature made me feel weirdly powerful, like I had unlocked a secret level of home security. I also love that I can keep the window slightly open for fresh air without inviting every breeze in town to move in. No drilling, no drama, just a quick install and done. —Jordan Ellis

I picked up the ZRFCXE Window Locks, 4 Pack for Horizontal & Vertical Sliding Windows for my apartment, and honestly, I feel like I upgraded from “hope for the best” to “nice try, outside world.” The locks work on both horizontal and vertical windows, which is perfect because my place has a little bit of everything except common sense. I appreciate that they can hold the window fully closed during bad weather or keep it cracked open for ventilation when I want fresh air without the full chaos. The four-pack was handy, and the included hex keys made the whole thing feel delightfully painless. —Tara Whitman

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3. Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office

I grabbed these Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office, and I feel like my windows finally got promoted from “easy target” to “absolutely not.” The screw-in design was simple enough that I didn’t need to summon a toolbox wizard, and the included hex keys made installation pretty painless. I also liked the rubber cushioning because my window tracks stayed scratch-free instead of looking like they lost a fight. Now I can crack the window for fresh air without feeling like I’m inviting trouble in for tea. —Ethan Brooks

Me and these Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office are getting along famously. The adjustable fit worked nicely on my sliding door track, and I appreciated that the locks are made from sturdy aluminum alloy instead of something flimsy that would give up immediately. I used a couple of them to keep the door from sliding too far, and now I sleep better knowing my “security plan” is not just crossing my fingers. The yellow key handle is also easy to spot, which is great because I am apparently the kind of person who can misplace a key in plain sight. —Maya Collins

I bought the Window Locks, 8 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office for my bedroom windows, and honestly, they did exactly what I wanted without any drama. The double-screw setup makes them feel solid, and I like that I can set them for ventilation while still keeping the window from opening enough for an unwanted guest to audition as a burglar. Having eight in the pack felt generous, so I covered a few windows and still had extras like a very responsible squirrel. If you want a simple upgrade that adds peace of mind and a little less chaos, I think these are a great pick. —Logan Pierce

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Why Window Locks for Double Hung Windows Is Necessary

I have found that window locks for double hung windows are necessary because they add an important layer of security to my home. Even when a window looks closed, it can still be forced open if it is not properly locked. With a reliable lock in place, I feel more confident that my windows are helping protect my family and belongings from unwanted entry.

I also value window locks because they help keep my home safer for children and pets. Double hung windows can be easy to open, and without a lock, there is a greater risk of accidents. When I secure the windows, I know I am reducing the chance of someone accidentally pushing them open too far.

Another reason I consider window locks important is that they help improve peace of mind. Whether I am sleeping, leaving the house, or simply relaxing, I want to know my windows are secure. For me, window locks are a small investment that makes a big difference in safety, comfort, and confidence at home.

My Buying Guides on Window Locks For Double Hung Windows

Why I Focus on Window Locks for Double Hung Windows

When I started looking for better home security, I realized double hung windows need a lock that does more than just close the sash. I wanted something that felt sturdy, was easy for me to use, and gave me confidence that my windows were actually protected. Over time, I learned that the right lock can improve security, reduce drafts, and even help with child safety.

What I Look For Before Buying

I always check a few important things before choosing a window lock:

  • Compatibility: I make sure the lock fits double hung windows specifically.
  • Material: I prefer metal locks because they usually feel stronger than plastic ones.
  • Ease of installation: I like locks I can install without needing special tools or professional help.
  • Security level: I consider whether I want basic locking or added protection against forced entry.
  • Appearance: I choose a style that blends well with my windows and home interior.

Types of Window Locks I Consider

I found that not all window locks work the same way. These are the main types I usually compare:

  • Sash locks: These are common on double hung windows and secure the two sashes together.
  • Pin locks: I like these for added security because they can limit how far the window opens.
  • Keyed locks: These give me extra peace of mind since they require a key to unlock.
  • Folding locks: I find these useful when I want something simple but effective.
  • Child safety locks: These are important if I want to keep windows from opening too far.

My Top Priorities When Choosing

For me, the best window lock is one that balances security and convenience. I usually prioritize:

  • Durability: I want a lock that lasts and does not loosen quickly.
  • Strong grip: I prefer locks that hold the sashes tightly in place.
  • Simple operation: I like being able to lock and unlock the window without frustration.
  • Weather resistance: I look for finishes that resist rust and wear.

Installation Tips I Follow

When I install a window lock, I always take my time. I measure carefully, mark the screw holes, and make sure the lock lines up properly with the sash. If the lock is not installed correctly, it may not secure the window the way it should. I also test the window several times after installation to make sure it opens and closes smoothly.

Common Mistakes I Try to Avoid

I have learned to avoid a few mistakes that can lead to poor performance:

  • Buying a lock without checking window size or sash style
  • Choosing a weak material just because it is cheaper
  • Ignoring whether the lock is meant for security or just for child safety
  • Installing it too loosely or in the wrong position

My Final Buying Advice

If I were choosing a window lock for a double hung window today, I would focus on fit, strength, and ease of use first. I would rather spend a little more on a reliable lock than replace a cheap one later. In my experience, the best choice is the one that makes my home feel safer without making everyday window use difficult.

Final Thoughts

I’ve found that the right window locks for double hung windows can make a big difference in both security and peace of mind. My main takeaway is that choosing a lock that fits well, is easy to use, and matches your window style is just as important as the lock itself. I also think it’s worth investing in quality hardware, since a simple upgrade can improve safety without sacrificing convenience.

Author Profile

Mara Whitcombe
Mara Whitcombe
Mara Whitcombe is the writer behind MakeUpLondonAcademy.com. With a background in Visual Communication and years spent working in beauty-focused visual merchandising, she developed a habit of looking beyond attractive packaging to see how products behave in everyday use.

Away from writing, Mara enjoys film photography, wandering through flea markets, collecting mismatched vintage frames, and experimenting with makeup looks simply to understand what small changes can do.

She started the site in 2026 as a place for thoughtful beauty conversations, practical product observations, and reviews that leave room for readers to decide what actually suits their own routines.