Tired of fumbling for keys or wondering if you locked the front door after you left? Welcome to the world of smart home security! While many smart locks require you to rip out your entire existing deadbolt, retrofit smart locks offer a fantastic alternative. These clever devices simply enhance your current lock, giving you all the high-tech benefits without the hassle of a full replacement. You get to keep your original keys, too!
Retrofit smart locks are perfect for renters, homeowners who want to maintain their door’s aesthetic, or anyone looking for an easier installation process. They bring convenience, enhanced security, and peace of mind right to your doorstep. Ready to dive in and find the perfect one for your home? Let’s explore some of the best retrofit smart locks on the market today.
Our Top Picks for Retrofit Smart Locks
1. August Home Wi-Fi Connected Smart Keyless Entry
The August Smart Lock has consistently been a frontrunner in the smart lock space, and for good reason. What makes this lock truly shine is its ability to seamlessly integrate with your existing deadbolt by attaching to the inside of your door. This means your home’s curb appeal stays exactly the same on the outside, a huge plus for many homeowners and renters alike. It’s super easy to install, often taking just minutes, and offers features like Auto-Unlock as you approach and Auto-Lock when you leave, making daily life incredibly convenient.
Key Features:
– UPGRADES EXISTING DEADBOLT: Fits on the inside of your door, keeping your keys.
– GRANT ACCESS WITH AUGUST APP: Share permanent, scheduled, or temporary access easily.
– EASY INSTALLATION: Takes about 10 minutes, fits most single-cylinder deadbolts.
– AUTO-LOCKS AND UNLOCKS: Hands-free unlocking upon arrival, automatic securing with DoorSense.
– WORKS SEAMLESSLY WITH SMART HOME: Built-in Wi-Fi works with Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings.
– AWARD-WINNING: CNET Editor’s Choice, Best Smart Lock by Good Housekeeping & Tom’s Guide.
– MAINTAINS CURB APPEAL: Installs only on the inside.
– OPTIONAL KEYPAD & BIOMETRIC ID: Add Smart Keypad (sold separately) or use phone’s biometric recognition.
Pros:
– Keeps your existing keys and exterior lock appearance.
– Simple, quick DIY installation.
– Excellent smart home integration with major platforms.
– Auto-unlock and auto-lock features are highly convenient.
– Award-winning reliability and trusted brand.
Cons:
– Keypad and biometric features require separate purchases.
– Battery life can vary based on usage.
User Impressions: Customers frequently praise the August Wi-Fi Smart Lock for its simple installation and reliable performance. Many love the auto-unlock feature, calling it a true game-changer for busy families. The ability to retain their existing keys and the lock’s discreet design are also big positives for users.
2. Yale Approach Smart Wi-Fi Deadbolt Retrofit Smart Lock
The Yale Approach is Yale’s answer to the popular retrofit style, designed for ultimate convenience without compromising on security. Like the August lock, it installs only on the inside of your door, preserving your home’s exterior look. This sleek, modern lock blends effortlessly into any decor. With the Yale Access app, you can enjoy secure keyless entry, share virtual keys with guests, and keep a watchful eye on your door’s activity 24/7. It’s perfect for families, frequent travelers, or anyone managing a vacation rental.
Key Features:
– ULTIMATE CONVENIENCE: Secure keyless access via Yale Access app for family, friends, guests.
– INSIDE ONLY INSTALLATION: Yale’s first retrofit, keeps existing deadbolt and keys.
– SLEEK DESIGN: Simple, modern look that blends into any home décor.
– STAY IN CONTROL: 24/7 activity feed to track who comes and goes, included Yale Connect.
– LOSE YOUR KEYS: Unlimited virtual keys for sharing access securely.
Pros:
– Maintains your door’s exterior aesthetics.
– Seamless virtual key sharing – no more hiding spare keys!
– Comprehensive activity tracking for peace of mind.
– Yale’s reputation for security and quality.
Cons:
– Some users might find the app setup slightly complex initially.
– Requires Wi-Fi for remote access (which is included with Yale Connect).
User Impressions: Users appreciate the elegant design and the robust features offered through the Yale Access app, especially the ability to manage virtual keys for guests. Many found the installation straightforward, and the reliability of Yale’s security features was a recurring positive comment.
3. Philips 3000 Series New Version – WiFi Smart Deadbolt Retrofit Lock
The Philips 3000 Series steps into the retrofit game with a strong offering, notably including a fingerprint keypad right out of the box! This means guests, kids, or even you, don’t need to download an app to gain entry – a simple code or fingerprint will do. This retrofit smart lock transforms your existing deadbolt with cool features like built-in Wi-Fi (no extra bridge needed!), instant alerts, and a detailed activity log. It’s all about smart living made simple and secure.
Key Features:
– UPGRADE WITH EASE: Transforms regular deadbolt without changing exterior look or hardware.
– BUILT-IN WI-FI: No extra gadgets needed; control from anywhere via Philips Home Access APP.
– STAY INFORMED & SAFE: Instant alerts and activity record (who, when) on your phone.
– FINGERPRINT KEYPAD INCLUDED: Guests use unique codes or fingerprints, no app needed.
– VOICE CONTROL: Works with Alexa & Google Assistant for hands-free convenience.
– SMART AUTO-LOCKING: Automatically secures your home when the door closes.
– RELIABLE CUSTOMER SUPPORT: Comprehensive phone and email assistance.
Pros:
– Integrated fingerprint keypad is a major convenience.
– Built-in Wi-Fi eliminates the need for a separate hub.
– Excellent for families and multiple users due to keypad and app options.
– Strong customer support.
Cons:
– Philips Home Access app might have a learning curve for some new users.
– Design might be slightly larger than some other retrofit options.
User Impressions: The included fingerprint keypad is a huge hit with customers, simplifying access for non-smartphone users. People also love the direct Wi-Fi connection, meaning fewer devices to manage. The auto-locking feature and instant notifications also receive high marks for providing peace of mind.
4. SwitchBot Smart Lock Pro, Keyless Entry Door Lock
The SwitchBot Smart Lock Pro stands out for its wide compatibility and impressive battery life. Made with a durable aluminum alloy casing, this lock is designed to be truly retrofit – meaning no drilling or damage to your existing door or lock parts. This makes it an ideal choice for tenants or apartment residents. When paired with the SwitchBot Hub 2 (sold separately), it even supports Matter, expanding its smart home integration capabilities significantly. Plus, with optional accessories, you can unlock your door in a multitude of ways!
Key Features:
– VOICE COMMAND COMPATIBLE: Supports Matter (with Hub 2), Alexa, Google, Siri.
– WIDE COMPATIBILITY: Retrofit, no DIY needed, simple installation, perfect for tenants.
– PRO BATTERY LIFE: Up to 6-9 months with 4 AA batteries; Dual Power Pack extends to 9-12 months.
– AUTOMATICALLY LOCKS & REAL-TIME NOTIFICATIONS: Auto-Lock and door status notifications (with Hub).
– PART OF SWITCHBOT ECOSYSTEM: Works with other SwitchBot devices for a unified smart home.
– MULTIPLE UNLOCK METHODS: Up to 15 methods with SwitchBot Keypad Touch (sold separately), including fingerprint, passcodes, remote, voice.
Pros:
– Excellent battery life reduces maintenance.
– Highly tenant-friendly due to non-invasive installation.
– Broad compatibility with North American deadbolts.
– Part of a larger ecosystem for extensive smart home automation.
Cons:
– Matter support and full smart home integration require a separate hub.
– Fingerprint unlock and advanced access methods require additional purchases.
User Impressions: Renters particularly appreciate how easy it is to install and remove without damaging their property. The long battery life is a big plus, and users who invest in the SwitchBot ecosystem find the comprehensive smart home automation and numerous unlock methods incredibly useful.
5. Level Bolt (Wi-Fi) Smart Deadbolt – Make Your Lock Smart
The Level Bolt takes discreetness to an entirely new level. Unlike other retrofit smart locks that attach to the inside, the Level Bolt replaces the internal components of your existing deadbolt. This means your original lock hardware and keys remain completely unchanged and visible from the outside and inside, making it truly invisible! It’s the ultimate choice if you want all the smart features without anyone even knowing you have a smart lock. The included Level Connect Wi-Fi bridge ensures you can control it from anywhere.
Key Features:
– TURN YOUR EXISTING LOCK INTO A SMART LOCK: Replaces deadbolt internal components, keeping original keys, hardware, and look.
– CONTROL FROM ANYWHERE: Included Level Connect Wi-Fi bridge for remote lock/unlock, activity history, and managing codes.
– KEYLESS ENTRY VIA LEVEL HOME APP: Lock/unlock with app, share access, view history.
– WORKS WITH SMART HOME: Apple HomeKit, Google Home, Amazon Alexa voice commands.
– SAFE AND SECURE: Exceeds highest industry standards with a 6-stage stainless steel gearbox.
– FITS MOST EXTERIOR DOORS: Designed for majority of American standard exterior doors.
– DIY INSTALLATION: Replaces inner deadbolt hardware with just a screwdriver.
Pros:
– Completely invisible smart lock – maintains aesthetics perfectly.
– Extremely secure with high-quality internal components.
– Retains original keys and exterior hardware.
– Easy DIY installation.
Cons:
– May be slightly more involved to install than surface-mount retrofit locks.
– Requires compatibility check with existing deadbolt (though fits most).
User Impressions: The “invisible” nature of the Level Bolt is its biggest selling point for users; they love that it seamlessly blends in. Customers also praise its robust security features and the ease of use with the Level Home app and smart home integrations. It truly offers a blend of traditional aesthetics with modern smart functionality.
Frequently Asked Questions About Retrofit Smart Locks
Q1: What exactly is a retrofit smart lock?
A: A retrofit smart lock is a device that enhances your existing door lock (usually a deadbolt) with smart capabilities without requiring you to replace the entire lock mechanism or change the look of your door. They typically attach to the inside of your door or replace only internal components.
Q2: Do I need to replace my keys if I install a retrofit smart lock?
A: No! One of the biggest advantages of retrofit smart locks is that they allow you to keep your original keys. The exterior of your lock remains unchanged, so you can still use traditional keys as a backup or for convenience.
Q3: Are retrofit smart locks secure?
A: Absolutely! Reputable retrofit smart locks are designed with security in mind, often meeting or exceeding industry standards. They don’t compromise your lock’s physical security and add digital security features like encryption, activity logs, and remote monitoring.
Q4: How easy are retrofit smart locks to install?
A: Generally, very easy! Most retrofit smart locks are designed for DIY installation and can be set up in 10-20 minutes with basic tools like a screwdriver. They typically involve replacing only the thumbturn on the inside of your door or the internal deadbolt mechanism.
Q5: Can I control a retrofit smart lock remotely?
A: Yes, most modern retrofit smart locks offer remote control capabilities via a smartphone app. Many also integrate with smart home ecosystems like Amazon Alexa, Google Assistant, and Apple HomeKit, allowing for voice control and remote locking/unlocking from anywhere with an internet connection. Some may require a Wi-Fi bridge, which is often included or sold separately.
Q6: What if the battery dies on my retrofit smart lock?
A: Smart locks are designed to prevent you from being locked out. Most will give you low battery warnings well in advance. If the battery does die, you can still use your traditional physical key to unlock the door, or some models offer a backup power option.
Q7: What are the main benefits of using a retrofit smart lock?
A: The key benefits include enhanced convenience (keyless entry, auto-lock/unlock), improved security (remote monitoring, activity logs, virtual keys), maintaining your door’s aesthetic, and ease of installation compared to full smart lock replacements. They’re also often a great solution for renters.