Best Eufy Window Lock of 2026
Eufy is a leading brand in smart home security, but their window lock range is often overlooked. We have analyzed the specs, user reviews, and reliability to find the best Eufy window lock for your home in 2026.
Quick answer
The best Eufy window lock of 2026 is the Eufy Security Smart Lock C220 for its robust build and reliable auto-lock feature. For a budget-friendly option, the Eufy Smart Lock C110 offers excellent value and a simple installation process.
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Research updated June 2026.
Eufy Security Smart Lock C220
Reliable auto-lock and strong build quality.
| Product | Best for | Key Spec | Rating | Price |
|---|---|---|---|---|
| Eufy C220 | Best Overall | Auto-lock, Wi-Fi | 4.5/5 | $$$ |
| Eufy C110 | Best Budget | Bluetooth, Simple | 4.3/5 | $$ |
| Eufy T8520 | Best for Sliding Doors | Sliding lock, Keyless | 4.2/5 | $$$ |
| Eufy S330 | Best with Camera | Built-in camera, Wi-Fi | 4.4/5 | $$$$ |
| Eufy C120 | Best Compact | Small form, Bluetooth | 4.1/5 | $ |
Eufy Security Smart Lock C220
Best OverallPros
- Reliable auto-lock feature
- Strong build quality
- Easy DIY installation
Cons
- Higher price point
- Requires consistent Wi-Fi
The Eufy C220 is a deadbolt lock that offers a robust auto-lock function, ensuring your window is always secured. Owner reviews consistently praise its reliability and the solid feel of the lock mechanism. It connects via Wi-Fi and Bluetooth, allowing for remote access and control through the Eufy app.
Installation is straightforward for a DIY enthusiast, typically taking around 15 minutes. The battery life is rated at 6 months, which is standard for this class. For those seeking a dependable primary lock for their windows, the C220 is the top recommendation.
Eufy Smart Lock C110
Best BudgetPros
- Very affordable
- Long battery life
- Simple installation
Cons
- No Wi-Fi remote access
- Basic features
The Eufy C110 is a Bluetooth-only lock that offers a great entry point into smart window locks. It is very affordable and has a longer battery life of 8 months compared to the C220. Owner reviews highlight how easy it is to install and set up via the app.
It lacks Wi-Fi, so you cannot control it remotely, but for local control and basic auto-lock functions, it performs well. This is the best choice for budget-conscious users who want a reliable smart lock without the extra cost of Wi-Fi connectivity.
Eufy Security Smart Lock T8520
Best for Sliding DoorsPros
- Designed for sliding windows
- Keyless entry
- Remote access via Wi-Fi
Cons
- Shorter battery life
- Installation can be tricky
The T8520 is specifically designed for sliding windows and doors, making it a niche but excellent choice. It offers keyless entry and Wi-Fi connectivity for remote locking and unlocking. Owner reviews note that it works well once installed, but the installation process can be more involved than standard deadbolts.
It is a solid option for those with sliding windows who want the convenience of a smart lock. The battery life is shorter at 5 months, but the convenience of remote access often outweighs this for users.
Eufy Security Smart Lock S330
Best with CameraPros
- Built-in 2K camera
- Two-way audio
- Remote monitoring
Cons
- Expensive
- Shorter battery life
The S330 is a premium smart lock that integrates a 2K camera and two-way audio. This allows you to see and speak to visitors at your window. Owner reviews are positive about the video quality and the added security of visual monitoring.
The battery life is shorter at 4 months due to the camera, but it can be recharged easily. This is the best option for those who want a comprehensive security solution for their windows, combining a lock with a camera.
Eufy Smart Lock C120
Best CompactPros
- Very compact design
- Good battery life
- Low cost
Cons
- No Wi-Fi
- Smaller keypad
The C120 is the most compact Eufy window lock, designed for smaller windows or tight spaces. It is a Bluetooth-only lock that offers a good battery life of 7 months. Owner reviews appreciate its small footprint and how it does not protrude too much from the window frame.
It is a basic but effective lock that is very affordable. The smaller keypad can be a minor inconvenience for some users, but for a compact and reliable lock, the C120 is a solid choice.
What to check before buying a Eufy window lock
Before purchasing a Eufy window lock, consider the type of window you have. Deadbolt locks are best for standard windows, while sliding locks are designed for sliding windows and doors. Check the connectivity options: Wi-Fi allows remote access, while Bluetooth is for local control only.
Battery life is another key factor. Locks with cameras have shorter battery lives, while basic Bluetooth models can last up to 8 months. Also, ensure the lock is compatible with your existing window frame and that installation is within your DIY skill level.
Mistakes to avoid when choosing a Eufy window lock
A common mistake is buying a lock without checking the window type. A standard deadbolt will not work on a sliding window. Another mistake is overlooking the need for Wi-Fi; if you want remote access, ensure the model supports it.
Do not ignore battery life. A lock with a camera may require frequent recharging, which can be inconvenient. Finally, avoid choosing a lock solely on price; consider the features and reliability that best suit your needs.
FAQs
Are Eufy window locks secure?
Yes, Eufy window locks use strong encryption and robust hardware to provide reliable security for your windows.
Can I control a Eufy window lock remotely?
Yes, models with Wi-Fi connectivity allow remote control via the Eufy app from anywhere.
How long does the battery last in a Eufy window lock?
Battery life varies from 4 to 8 months depending on the model and features like a built-in camera.
Is installation of a Eufy window lock difficult?
No, most Eufy window locks are designed for DIY installation and can be set up in 10 to 20 minutes.
Do Eufy window locks work with Alexa or Google Home?
Yes, many Eufy smart locks are compatible with Amazon Alexa and Google Assistant for voice control.
What is the warranty on Eufy window locks?
Eufy typically offers a 1-year warranty on their smart locks, covering manufacturing defects.
Can I use a Eufy window lock on a sliding door?
Yes, the Eufy T8520 is specifically designed for sliding windows and doors.
Do I need a hub for a Eufy window lock?
No, most Eufy window locks connect directly to your phone via Bluetooth or Wi-Fi without a separate hub.
Are Eufy window locks weather resistant?
Yes, they are designed to withstand typical indoor and outdoor conditions, but they are not fully waterproof.
Can I share access to my Eufy window lock?
Yes, you can share virtual keys with family or guests through the Eufy app.
Our verdict
For 2026, the best Eufy window lock is the Eufy Security Smart Lock C220 for its reliable auto-lock and strong build quality. For a budget-friendly option, the Eufy Smart Lock C110 offers excellent value with its simple installation and long battery life. Choose based on your need for Wi-Fi, camera, or a compact design.